User:Tom.Reding/Articles in Category:Astronomy (1/2)

This page is identical in scope to Pages in Category:Astronomy (1/2), except that it omits #Redirects. Compiled: 14:30, 17 December 2020 (UTC).

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Older versions: List compiled 14:30, 17 December 2019 (UTC) List compiled 14:30, 17 December 2018 (UTC) List compiled 18:15, 29 December 2017 (UTC)

List

 * $50SAT
 * '39
 * 'Abd al-'Aziz al-Wafa'i
 * 'Amm
 * 'Til Death Do Us Part (Star Trek: Deep Space Nine)
 * 'Tis the Voice of the Lobster
 * 's Nachts
 * 't Hooft–Polyakov monopole
 * (10115) 1992 SK
 * (101429) 1998 VF31
 * (101869) 1999 MM
 * (10302) 1989 ML
 * (111253) 2001 XU10
 * (11395) 1998 XN77
 * (11436) 1969 QR
 * (11474) 1982 SM2
 * (118228) 1996 TQ66
 * (118378) 1999 HT11
 * (119070) 2001 KP77
 * (119951) 2002 KX14
 * (119979) 2002 WC19
 * (120132) 2003 FY128
 * (120178) 2003 OP32
 * (120216) 2004 EW95
 * (120348) 2004 TY364
 * (121514) 1999 UJ7
 * (12538) 1998 OH
 * (126154) 2001 YH140
 * (126155) 2001 YJ140
 * (127546) 2002 XU93
 * (12929) 1999 TZ1
 * (131696) 2001 XT254
 * (131697) 2001 XH255
 * (13366) 1998 US24
 * (136617) 1994 CC
 * (137108) 1999 AN10
 * (137427) 1999 TF211
 * (137924) 2000 BD19
 * (139775) 2001 QG298
 * (143649) 2003 QQ47
 * (143651) 2003 QO104
 * (144897) 2004 UX10
 * (144898) 2004 VD17
 * (144908) 2004 YH32
 * (145451) 2005 RM43
 * (145452) 2005 RN43
 * (145453) 2005 RR43
 * (145480) 2005 TB190
 * (148209) 2000 CR105
 * (148975) 2001 XA255
 * (152680) 1998 KJ9
 * (153201) 2000 WO107
 * (153591) 2001 SN263
 * (153814) 2001 WN5
 * (154276) 2002 SY50
 * (15430) 1998 UR31
 * (15436) 1998 VU30
 * (15440) 1998 WX4
 * (15502) 1999 NV27
 * (15692) 1984 RA
 * (15700) 1987 QD
 * (15788) 1993 SB
 * (15789) 1993 SC
 * (15807) 1994 GV9
 * (15820) 1994 TB
 * (15874) 1996 TL66
 * (15875) 1996 TP66
 * (15977) 1998 MA11
 * (159857) 2004 LJ1
 * (16070) 1999 RB101
 * (162058) 1997 AE12
 * (162421) 2000 ET70
 * (163132) 2002 CU11
 * (163243) 2002 FB3
 * (163249) 2002 GT
 * (163348) 2002 NN4
 * (163364) 2002 OD20
 * (163899) 2003 SD220
 * (164121) 2003 YT1
 * (164207) 2004 GU9
 * (16882) 1998 BO13
 * (16960) 1998 QS52
 * (172034) 2001 WR1
 * (175113) 2004 PF115
 * (175706) 1996 FG3
 * (177049) 2003 EE16
 * (179806) 2002 TD66
 * (181708) 1993 FW
 * (181902) 1999 RD215
 * (182294) 2001 KU76
 * (184212) 2004 PB112
 * (185851) 2000 DP107
 * (190166) 2005 UP156
 * (19255) 1994 VK8
 * (192642) 1999 RD32
 * (19308) 1996 TO66
 * (196256) 2003 EH1
 * (2+1)-dimensional topological gravity
 * (20161) 1996 TR66
 * (202421) 2005 UQ513
 * (20729) 1999 XS143
 * (208996) 2003 AZ84
 * (214869) 2007 PA8
 * (21601) 1998 XO89
 * (219774) 2001 YY145
 * (22149) 2000 WD49
 * (225312) 1996 XB27
 * (230965) 2004 XA192
 * (23135) 2000 AN146
 * (237442) 1999 TA10
 * (23958) 1998 VD30
 * (242450) 2004 QY2
 * (24835) 1995 SM55
 * (248835) 2006 SX368
 * (24952) 1997 QJ4
 * (24978) 1998 HJ151
 * (251732) 1998 HG49
 * (26308) 1998 SM165
 * (26375) 1999 DE9
 * (275809) 2001 QY297
 * (276033) 2002 AJ129
 * (277475) 2005 WK4
 * (277810) 2006 FV35
 * (278361) 2007 JJ43
 * (285263) 1998 QE2
 * (29075) 1950 DA
 * (292220) 2006 SU49
 * (300163) 2006 VW139
 * (303775) 2005 QU182
 * (307261) 2002 MS4
 * (307463) 2002 VU130
 * (308193) 2005 CB79
 * (308242) 2005 GO21
 * (308635) 2005 YU55
 * (308933) 2006 SQ372
 * (309239) 2007 RW10
 * (310071) 2010 KR59
 * (311999) 2007 NS2
 * (31345) 1998 PG
 * (315530) 2008 AP129
 * (315898) 2008 QD4
 * (316179) 2010 EN65
 * (31669) 1999 JT6
 * (322756) 2001 CK32
 * (323137) 2003 BM80
 * (32496) 2000 WX182
 * (33001) 1997 CU29
 * (332446) 2008 AF4
 * (33340) 1998 VG44
 * (33342) 1998 WT24
 * (336756) 2010 NV1
 * (341843) 2008 EV5
 * (342842) 2008 YB3
 * (343158) 2009 HC82
 * (34746) 2001 QE91
 * (350462) 1998 KG3
 * (35396) 1997 XF11
 * (35671) 1998 SN165
 * (357439) 2004 BL86
 * (367789) 2011 AG5
 * (369623) 2011 DY5
 * (3708) 1974 FV1
 * (374158) 2004 UL
 * (38050) 1998 VR38
 * (38063) 1999 FH
 * (385185) 1993 RO
 * (385250) 2001 DH47
 * (385343) 2002 LV
 * (386454) 2008 XM
 * (386723) 2009 YE7
 * (388188) 2006 DP14
 * (38984) 2000 UZ4
 * (391211) 2006 HZ51
 * (392741) 2012 SQ31
 * (394130) 2006 HY51
 * (39546) 1992 DT5
 * (40314) 1999 KR16
 * (4035) 1986 WD
 * (410777) 2009 FD
 * (415029) 2011 UL21
 * (415713) 1998 XX2
 * (416151) 2002 RQ25
 * (416400) 2003 UZ117
 * (417634) 2006 XG1
 * (418993) 2009 MS9
 * (419624) 2010 SO16
 * (42301) 2001 UR163
 * (432949) 2012 HH2
 * (433953) 1997 XR2
 * (434326) 2004 JG6
 * (434620) 2005 VD
 * (436724) 2011 UW158
 * (444004) 2004 AS1
 * (444030) 2004 NT33
 * (445473) 2010 VZ98
 * (44594) 1999 OX3
 * (4489) 1988 AK
 * (450894) 2008 BT18
 * (454101) 2013 BP73
 * (455502) 2003 UZ413
 * (456938) 2007 YV56
 * (457175) 2008 GO98
 * (458732) 2011 MD5
 * (459883) 2014 JX55
 * (467336) 2002 LT38
 * (468861) 2013 LU28
 * (469306) 1999 CD158
 * (469372) 2001 QF298
 * (469987) 2006 HJ123
 * (470308) 2007 JH43
 * (470599) 2008 OG19
 * (471240) 2011 BT15
 * (471288) 2011 GM27
 * (471325) 2011 KT19
 * (4715) 1989 TS1
 * (472271) 2014 UM33
 * (472651) 2015 DB216
 * (474640) 2004 VN112
 * (480808) 1994 XL1
 * (481394) 2006 SF6
 * (481482) 2007 CA19
 * (48639) 1995 TL8
 * (4953) 1990 MU
 * (495603) 2015 AM281
 * (496315) 2013 GP136
 * (501546) 2014 JJ80
 * (501581) 2014 OB394
 * (501647) 2014 SD224
 * (5025) 1986 TS6
 * (505448) 2013 SA100
 * (505478) 2013 UT15
 * (505624) 2014 GU53
 * (505657) 2014 SR339
 * (506479) 2003 HB57
 * (508338) 2015 SO20
 * (508869) 2002 VT130
 * (511002) 2013 MZ5
 * (5119) 1988 RA1
 * (516977) 2012 HZ84
 * (523622) 2007 TG422
 * (523635) 2010 DN93
 * (523639) 2010 RE64
 * (523643) 2010 TY53
 * (523645) 2010 VK201
 * (523662) 2012 MU2
 * (523671) 2013 FZ27
 * (523674) 2013 MA12
 * (523683) 2014 CP23
 * (523684) 2014 CQ23
 * (523687) 2014 DF143
 * (523692) 2014 EZ51
 * (523702) 2014 HW199
 * (523706) 2014 HF200
 * (523719) 2014 LM28
 * (523727) 2014 NW65
 * (523759) 2014 WK509
 * (523764) 2014 WC510
 * (523775) 2014 YB35
 * (523794) 2015 RR245
 * (523972) 1999 CW8
 * (524366) 2001 XR254
 * (524435) 2002 CY248
 * (524522) 2002 VE68
 * (5258) 1989 AU1
 * (52747) 1998 HM151
 * (52760) 1998 ML14
 * (527603) 2007 VJ305
 * (527604) 2007 VL305
 * (52768) 1998 OR2
 * (528219) 2008 KV42
 * (528381) 2008 ST291
 * (529366) 2009 WM1
 * (532037) 2013 FY27
 * (53319) 1999 JM8
 * (533560) 2014 JM80
 * (5407) 1992 AX
 * (543354) 2014 AN55
 * (5476) 1989 TO11
 * (5496) 1973 NA
 * (55565) 2002 AW197
 * (55636) 2002 TX300
 * (55637) 2002 UX25
 * (55638) 2002 VE95
 * (5604) 1992 FE
 * (5645) 1990 SP
 * (5646) 1990 TR
 * (5648) 1990 VU1
 * (5836) 1993 MF
 * (6002) 1988 RO
 * (6037) 1988 EG
 * (60621) 2000 FE8
 * (6090) 1989 DJ
 * (6178) 1986 DA
 * (6265) 1985 TW3
 * (6382) 1988 EL
 * (6491) 1991 OA
 * (65407) 2002 RP120
 * (6545) 1986 TR6
 * (66063) 1998 RO1
 * (68950) 2002 QF15
 * (7025) 1993 QA
 * (7335) 1989 JA
 * (7341) 1991 VK
 * (7348) 1993 FJ22
 * (7352) 1994 CO
 * (7474) 1992 TC
 * (7482) 1994 PC1
 * (75482) 1999 XC173
 * (7563) 1988 BC
 * (7641) 1986 TT6
 * (78799) 2002 XW93
 * (7888) 1993 UC
 * (79983) 1999 DF9
 * (8014) 1990 MF
 * (8035) 1992 TB
 * (8201) 1994 AH2
 * (82075) 2000 YW134
 * (82158) 2001 FP185
 * (84522) 2002 TC302
 * (84719) 2002 VR128
 * (84922) 2003 VS2
 * (85182) 1991 AQ
 * (85627) 1998 HP151
 * (85633) 1998 KR65
 * (85640) 1998 OX4
 * (85713) 1998 SS49
 * (85770) 1998 UP1
 * (85989) 1999 JD6
 * (85990) 1999 JV6
 * (86039) 1999 NC43
 * (86047) 1999 OY3
 * (87269) 2000 OO67
 * (88710) 2001 SL9
 * (89830) 2002 CE
 * (89958) 2002 LY45
 * (89959) 2002 NT7
 * (90075) 2002 VU94
 * (90568) 2004 GV9
 * (91133) 1998 HK151
 * (91205) 1998 US43
 * (95625) 2002 GX32
 * (9799) 1996 RJ
 * (9928) 1981 WE9
 * (9942) 1989 TM1
 * (9948) 1990 QB2
 * (99907) 1989 VA
 * (9992) 1997 TG19
 * (Every Day Is) Halloween
 * (Last Night) I Didn't Get to Sleep at All
 * (n-p) reaction
 * (−1)F
 * +1 (film)
 * ...The Heavens and the Earth
 * 1 Aquarii
 * 1 Arietis
 * 1 Aurigae
 * 1 Boötis
 * 1 Camelopardalis
 * 1 Cancri
 * 1 Canis Minoris
 * 1 Cassiopeiae
 * 1 Centauri
 * 1 Ceti
 * 1 Delphini
 * 1 Geminorum
 * 1 Lacertae
 * 1 Lupi
 * 1 Lyncis
 * 1 Pegasi
 * 1 Persei
 * 1 Puppis
 * 1 Scorpii
 * 1 Serpentis
 * 1 Vulpeculae
 * 1% (film)
 * 1,1,1-Trichloroethane
 * 1,1-Dimethyldiborane
 * 1-Butanol
 * 1-Pentanol
 * 1-Propanol
 * 1.8KS7800
 * 1.9KS2150
 * 1/N expansion
 * 10 Andromedae
 * 10 Aquilae
 * 10 Arietis
 * 10 Boötis
 * 10 Canis Majoris
 * 10 Canum Venaticorum
 * 10 Cloverfield Lane
 * 10 Draconis
 * 10 Hygiea
 * 10 Lacertae
 * 10 Leonis Minoris
 * 10 Persei
 * 10 Serpentis
 * 10 Tauri
 * 10 Ursae Majoris
 * 10 Vulpeculae
 * 100 Aquarii
 * 100 Biggest Weather Moments
 * 100 Hekate
 * 100 Tears
 * 100 Year Starship
 * 100-year flood
 * 1000 Piazzia
 * 100000 Astronautica
 * 10001 Palermo
 * 1001 Gaussia
 * 1001 Inventions and the World of Ibn Al-Haytham
 * 1002 Olbersia
 * 100268 Rosenthal
 * 1003 Lilofee
 * 1004 Belopolskya
 * 10046 Creighton
 * 1005 Arago
 * 1006 Lagrangea
 * 1007 Pawlowia
 * 1008 La Paz
 * 1009 Sirene
 * 100P/Hartley
 * 100th meridian east
 * 100th meridian west
 * 101 Aquarii
 * 101 Helena
 * 101 Piscium
 * 101 Virginis
 * 1010 Marlene
 * 1011 Laodamia
 * 1012 Sarema
 * 10121 Arzamas
 * 1013 Tombecka
 * 1014 Semphyra
 * 10140 Villon
 * 1015 Christa
 * 1016 Anitra
 * 1017 Jacqueline
 * 1018 Arnolda
 * 1019 Strackea
 * 101955 Bennu
 * 10199 Chariklo
 * 101P/Chernykh
 * 101st meridian east
 * 101st meridian west
 * 102 Herculis
 * 102 Miriam
 * 1020 Arcadia
 * 10208 Germanicus
 * 1021 Flammario
 * 1022 Olympiada
 * 1023 Thomana
 * 1024 Hale
 * 10241 Miličević
 * 10244 Thüringer Wald
 * 10245 Inselsberg
 * 10247 Amphiaraos
 * 10249 Harz
 * 1025 Riema
 * 10251 Mulisch
 * 10252 Heidigraf
 * 10258 Sárneczky
 * 1026 Ingrid
 * 1027 Aesculapia
 * 1028 Lydina
 * 1029 La Plata
 * 102P/Shoemaker
 * 102nd meridian east
 * 102nd meridian west
 * 103 Aquarii
 * 103 Hera
 * 1030 Vitja
 * 1031 Arctica
 * 1032 Pafuri
 * 1033 Simona
 * 1034 Mozartia
 * 1035 Amata
 * 1036 Ganymed
 * 1037 Davidweilla
 * 10370 Hylonome
 * 1038 Tuckia
 * 1039 Sonneberga
 * 103P/Hartley
 * 103rd meridian east
 * 103rd meridian west
 * 104 Aquarii
 * 104 Herculis
 * 104 Klymene
 * 104 Tauri
 * 1040 Klumpkea
 * 1041 Asta
 * 10415 Mali Lošinj
 * 1042 Amazone
 * 1043 Beate
 * 1044 Teutonia
 * 1045 Michela
 * 1046 Edwin
 * 1047 Geisha
 * 10476 Los Molinos
 * 1048 Feodosia
 * 1049 Gotho
 * 104P/Kowal
 * 104th meridian east
 * 104th meridian west
 * 105 Artemis
 * 1050 Meta
 * 10502 Armaghobs
 * 1051 Merope
 * 1052 Belgica
 * 1053 Vigdis
 * 1054 Forsytia
 * 1055 Tynka
 * 10551 Göteborg
 * 1056 Azalea
 * 1057 Wanda
 * 1058 Grubba
 * 1059 Mussorgskia
 * 105P/Singer Brewster
 * 105th meridian east
 * 105th meridian west
 * 106 Aquarii
 * 106 Dione
 * 106 Herculis
 * 1060 Magnolia
 * 1061 Paeonia
 * 1062 Ljuba
 * 1063 Aquilegia
 * 1064 Aethusa
 * 10645 Brač
 * 1065 Amundsenia
 * 10656 Albrecht
 * 1066 Lobelia
 * 10660 Felixhormuth
 * 1067 Lunaria
 * 1068 Nofretete
 * 1069 Planckia
 * 106th meridian east
 * 106th meridian west
 * 107 Aquarii
 * 107 Camilla
 * 107 Piscium
 * 1070 Tunica
 * 1071 Brita
 * 10711 Pskov
 * 1072 Malva
 * 1073 Gellivara
 * 1074 Beljawskya
 * 1075 Helina
 * 1076 Viola
 * 1077 Campanula
 * 1078 Mentha
 * 1079 Mimosa
 * 107th meridian east
 * 107th meridian west
 * 108 Aquarii
 * 108 Hecuba
 * 1080 Orchis
 * 1081 Reseda
 * 1082 Pirola
 * 1083 Salvia
 * 10830 Desforges
 * 1084 Tamariwa
 * 1085 Amaryllis
 * 1086 Nata
 * 1087 Arabis
 * 1088 Mitaka
 * 1089 Tama
 * 108th meridian east
 * 108th meridian west
 * 109 Felicitas
 * 109 Herculis
 * 109 Piscium
 * 109 Piscium b
 * 109 Tauri
 * 109 Virginis
 * 1091 Spiraea
 * 1092 Lilium
 * 1093 Freda
 * 1094 Siberia
 * 1095 Tulipa
 * 1096 Reunerta
 * 1097 Vicia
 * 10979 Fristephenson
 * 1098 Hakone
 * 10988 Feinstein
 * 1099 Figneria
 * 109th meridian east
 * 109th meridian west
 * 10P/Tempel
 * 10th FAI World Rally Flying Championship
 * 10th meridian east
 * 10th meridian west
 * 10th parallel north
 * 10th parallel south
 * 11 Andromedae
 * 11 Aquarii
 * 11 Aquilae
 * 11 Arietis
 * 11 Boötis
 * 11 Camelopardalis
 * 11 Canis Majoris
 * 11 Canis Minoris
 * 11 Cephei
 * 11 Comae Berenices
 * 11 Lacertae
 * 11 Leonis Minoris
 * 11 Librae
 * 11 Orionis
 * 11 Parthenope
 * 11 Persei
 * 11 Puppis
 * 11 Serpentis
 * 11 Ursae Minoris
 * 11 Ursae Minoris b
 * 110 Herculis
 * 110 Lydia
 * 110 Virginis
 * 1100 Arnica
 * 11001001
 * 1101 Clematis
 * 1102 Pepita
 * 11020 Orwell
 * 1103 Sequoia
 * 110393 Rammstein
 * 1104 Syringa
 * 1105 Fragaria
 * 1106 Cydonia
 * 11066 Sigurd
 * 1107 Lictoria
 * 1108 Demeter
 * 1109 Tata
 * 110th meridian east
 * 110th meridian west
 * 111 Ate
 * 111 Herculis
 * 111 Tauri
 * 1110 Jaroslawa
 * 1111 Reinmuthia
 * 11118 Modra
 * 1112 Polonia
 * 1113 Katja
 * 11132 Horne
 * 11133 Kumotori
 * 1114 Lorraine
 * 1115 Sabauda
 * 1116 Catriona
 * 1117 Reginita
 * 1118 Hanskya
 * 1119 Euboea
 * 111P/Helin–Roman–Crockett
 * 111th meridian east
 * 111th meridian west
 * 112 Iphigenia
 * 1120 Cannonia
 * 1121 Natascha
 * 1122 Neith
 * 1123 Shapleya
 * 1124 Stroobantia
 * 1125 China
 * 11252 Laërtes
 * 1126 Otero
 * 11264 Claudiomaccone
 * 1127 Mimi
 * 11277 Ballard
 * 1128 Astrid
 * 1129 Neujmina
 * 112P/Urata–Niijima
 * 112th meridian east
 * 112th meridian west
 * 113 Amalthea
 * 1130 Skuld
 * 1131 Porzia
 * 1132 Hollandia
 * 1133 Lugduna
 * 113390 Helvetia
 * 1134 Kepler
 * 1135 Colchis
 * 11351 Leucus
 * 1136 Mercedes
 * 1137 Raïssa
 * 1138 Attica
 * 1139 Atami
 * 113P/Spitaler
 * 113th meridian east
 * 113th meridian west
 * 114 Kassandra
 * 114 Tauri
 * 1140 Crimea
 * 11409 Horkheimer
 * 1141 Bohmia
 * 1142 Aetolia
 * 11429 Demodokus
 * 1143 Odysseus
 * 1144 Oda
 * 11441 Anadiego
 * 1145 Robelmonte
 * 1146 Biarmia
 * 1147 Stavropolis
 * 1148 Rarahu
 * 1149 Volga
 * 114P/Wiseman–Skiff
 * 114th meridian east
 * 114th meridian west
 * 115 Thyra
 * 1150 Achaia
 * 11509 Thersilochos
 * 1151 Ithaka
 * 1152 Pawona
 * 1153 Wallenbergia
 * 1154 Astronomia
 * 1155 Aënna
 * 11552 Boucolion
 * 1156 Kira
 * 1157 Arabia
 * 11573 Helmholtz
 * 1158 Luda
 * 1159 Granada
 * 115P/Maury
 * 115th meridian east
 * 115th meridian west
 * 116 Sirona
 * 1160 Illyria
 * 1161 Thessalia
 * 1162 Larissa
 * 1163 Saga
 * 1164 Kobolda
 * 1165 Imprinetta
 * 1166 Sakuntala
 * 11665 Dirichlet
 * 1167 Dubiago
 * 1168 Brandia
 * 1169 Alwine
 * 116903 Jeromeapt
 * 116P/Wild
 * 116th meridian east
 * 116th meridian west
 * 117 Lomia
 * 1170 Siva
 * 1171 Rusthawelia
 * 11714 Mikebrown
 * 1172 Äneas
 * 1173 Anchises
 * 1174 Marmara
 * 1175 Margo
 * 1176 Lucidor
 * 1177 Gonnessia
 * 1178 Irmela
 * 1179 Mally
 * 117P/Helin–Roman–Alu
 * 117th meridian east
 * 117th meridian west
 * 118 (film)
 * 118 Peitho
 * 1180 Rita
 * 1181 Lilith
 * 1182 Ilona
 * 11824 Alpaidze
 * 1183 Jutta
 * 1184 Gaea
 * 118401 LINEAR
 * 1185 Nikko
 * 1186 Turnera
 * 1187 Afra
 * 1188 Gothlandia
 * 11885 Summanus
 * 11887 Echemmon
 * 1189 Terentia
 * 118P/Shoemaker–Levy
 * 118th meridian east
 * 118th meridian west
 * 119 Althaea
 * 119 Tauri
 * 1190 Pelagia
 * 1191 Alfaterna
 * 1192 Prisma
 * 1193 Africa
 * 1194 Aletta
 * 11948 Justinehénin
 * 11949 Kagayayutaka
 * 1195 Orangia
 * 1196 Sheba
 * 1197 Rhodesia
 * 1198 Atlantis
 * 1199 Geldonia
 * 119P/Parker–Hartley
 * 119th meridian east
 * 119th meridian west
 * 11:59 (Star Trek: Voyager)
 * 11B97
 * 11P/Tempel–Swift–LINEAR
 * 11th FAI World Rally Flying Championship
 * 11th meridian east
 * 11th meridian west
 * 11th parallel north
 * 11th parallel south
 * 12 Andromedae
 * 12 Aquarii
 * 12 Aquilae
 * 12 Aurigae
 * 12 Boötis
 * 12 Camelopardalis
 * 12 Cancri
 * 12 Canis Majoris
 * 12 Comae Berenices
 * 12 Hydrae
 * 12 Lacertae
 * 12 Lyncis
 * 12 Ophiuchi
 * 12 Persei
 * 12 Scorpii
 * 12 Victoria
 * 12 Vulpeculae
 * 12 oz. Mouse
 * 12 to the Moon
 * 120 Lachesis
 * 1200 Imperatrix
 * 12002 Suess
 * 1202 Marina
 * 1203 Nanna
 * 120347 Salacia
 * 120375 Kugel
 * 1204 Renzia
 * 1205 Ebella
 * 12052 Aretaon
 * 1206 Numerowia
 * 1207 Ostenia
 * 1208 Troilus
 * 1209 Pumma
 * 120P/Mueller
 * 120th meridian east
 * 120th meridian west
 * 121 Hermione
 * 1212 Francette
 * 1213 Algeria
 * 1214 Richilde
 * 1215 Boyer
 * 1216 Askania
 * 1217 Maximiliana
 * 1218 Aster
 * 1219 Britta
 * 121P/Shoemaker–Holt
 * 121st meridian east
 * 121st meridian west
 * 122 Gerda
 * 1220 Crocus
 * 1221 Amor
 * 1222 Tina
 * 1223 Neckar
 * 12238 Actor
 * 1225 Ariane
 * 1226 Golia
 * 1227 Geranium
 * 1229 Tilia
 * 122P/de Vico
 * 122nd meridian east
 * 122nd meridian west
 * 123 Brunhild
 * 1230 Riceia
 * 1231 Auricula
 * 1232 Cortusa
 * 1233 Kobresia
 * 1234 Elyna
 * 1235 Schorria
 * 12359 Cajigal
 * 1236 Thaïs
 * 1237 Geneviève
 * 12373 Lancearmstrong
 * 12374 Rakhat
 * 1238 Predappia
 * 1239 Queteleta
 * 123rd meridian east
 * 123rd meridian west
 * 124 Alkeste
 * 1240 Centenaria
 * 1241 Dysona
 * 1242 Zambesia
 * 1243 Pamela
 * 1244 Deira
 * 12444 Prothoon
 * 1245 Calvinia
 * 1246 Chaka
 * 1247 Memoria
 * 1248 Jugurtha
 * 12482 Pajka
 * 1249 Rutherfordia
 * 124th meridian east
 * 124th meridian west
 * 125 Liberatrix
 * 1250 Galanthus
 * 1251 Hedera
 * 1252 Celestia
 * 1253 Frisia
 * 1255 Schilowa
 * 1256 Normannia
 * 12564 Ikeller
 * 1257 Móra
 * 1258 Sicilia
 * 1259 Ógyalla
 * 125P/Spacewatch
 * 125th meridian east
 * 125th meridian west
 * 126 Tauri
 * 126 Velleda
 * 1261 Legia
 * 1262 Sniadeckia
 * 12621 Alsufi
 * 1263 Varsavia
 * 1264 Letaba
 * 1266 Tone
 * 1267 Geertruida
 * 1268 Libya
 * 1269 Rollandia
 * 12696 Camus
 * 126th meridian east
 * 126th meridian west
 * 127 Johanna
 * 1270 Datura
 * 1271 Isergina
 * 12714 Alkimos
 * 1272 Gefion
 * 1274 Delportia
 * 1275 Cimbria
 * 1276 Ucclia
 * 1277 Dolores
 * 127th meridian east
 * 127th meridian west
 * 128 Nemesis
 * 1280 Baillauda
 * 1281 Jeanne
 * 1282 Utopia
 * 1283 Komsomolia
 * 12838 Adamsmith
 * 1284 Latvia
 * 12848 Agostino
 * 1286 Banachiewicza
 * 1287 Lorcia
 * 1289 Kutaïssi
 * 128P/Shoemaker–Holt
 * 128th meridian east
 * 128th meridian west
 * 129 Antigone
 * 1291 Phryne
 * 12923 Zephyr
 * 1293 Sonja
 * 1294 Antwerpia
 * 1295 Deflotte
 * 1296 Andrée
 * 1297 Quadea
 * 1298 Nocturna
 * 1299 Mertona
 * 12999 Toruń
 * 129P/Shoemaker–Levy
 * 129th meridian east
 * 129th meridian west
 * 12P/Pons–Brooks
 * 12th meridian east
 * 12th meridian west
 * 12th parallel north
 * 12th parallel south
 * 13 Andromedae
 * 13 Boötis
 * 13 Cancri
 * 13 Ceti
 * 13 Comae Berenices
 * 13 Egeria
 * 13 Monocerotis
 * 13 Sagittae
 * 13 Scorpii
 * 13 Trianguli
 * 13 Vulpeculae
 * 130 Elektra
 * 1300 Marcelle
 * 13003 Dickbeasley
 * 13006 Schwaar
 * 1301 Yvonne
 * 1302 Werra
 * 13025 Zürich
 * 1303 Luthera
 * 1304 Arosa
 * 1305 Pongola
 * 13058 Alfredstevens
 * 1306 Scythia
 * 13062 Podarkes
 * 1307 Cimmeria
 * 13070 Seanconnery
 * 1308 Halleria
 * 1309 Hyperborea
 * 130P/McNaught–Hughes
 * 130th meridian east
 * 130th meridian west
 * 131 Vala
 * 1310 Villigera
 * 1312 Vassar
 * 13123 Tyson
 * 1313 Berna
 * 13154 Petermrva
 * 1316 Kasan
 * 1318 Nerina
 * 13184 Augeias
 * 1319 Disa
 * 131st meridian east
 * 131st meridian west
 * 132 Aethra
 * 132 Tauri
 * 1322 Coppernicus
 * 1323 Tugela
 * 13241 Biyo
 * 1325 Inanda
 * 132524 APL
 * 13260 Sabadell
 * 1328 Devota
 * 1329 Eliane
 * 132P/Helin–Roman–Alu
 * 132nd meridian east
 * 132nd meridian west
 * 133 Cyrene
 * 1330 Spiridonia
 * 1332 Marconia
 * 1333 Cevenola
 * 1334 Lundmarka
 * 1335 Demoulina
 * 133528 Ceragioli
 * 1336 Zeelandia
 * 1337 Gerarda
 * 1338 Duponta
 * 1339 Désagneauxa
 * 13390 Bouška
 * 133rd meridian east
 * 133rd meridian west
 * 134 Sophrosyne
 * 134 Tauri
 * 1340 Yvette
 * 1341 Edmée
 * 1345 Potomac
 * 1346 Gotha
 * 1347 Patria
 * 13474 V'yus
 * 1349 Bechuana
 * 134th meridian east
 * 134th meridian west
 * 135 Hertha
 * 1350 Rosselia
 * 1353 Maartje
 * 1354 Botha
 * 1355 Magoeba
 * 1356 Nyanza
 * 1359 Prieska
 * 135th meridian east
 * 135th meridian west
 * 136 Austria
 * 136 Tauri
 * 1361 Leuschneria
 * 1362 Griqua
 * 1364 Safara
 * 1365 Henyey
 * 1366 Piccolo
 * 1368 Numidia
 * 1369 Ostanina
 * 136P/Mueller
 * 136th meridian east
 * 136th meridian west
 * 137 Meliboea
 * 1370 Hella
 * 1372 Haremari
 * 1373 Cincinnati
 * 13732 Woodall
 * 1374 Isora
 * 1376 Michelle
 * 1378 Leonce
 * 1379 Lomonosowa
 * 137th meridian east
 * 137th meridian west
 * 138 Tolosa
 * 1380 Volodia
 * 1382 Gerti
 * 1383 Limburgia
 * 1384 Kniertje
 * 1388 Aphrodite
 * 1389 Onnie
 * 138P/Shoemaker–Levy
 * 138th meridian east
 * 138th meridian west
 * 139 Juewa
 * 139 Tauri
 * 1390 Abastumani
 * 1391 Carelia
 * 1392 Pierre
 * 1393 Sofala
 * 1394 Algoa
 * 13963 Euphrates
 * 1397 Umtata
 * 139P/Väisälä–Oterma
 * 139th meridian east
 * 139th meridian west
 * 13P/Olbers
 * 13th FAI World Rally Flying Championship
 * 13th meridian east
 * 13th meridian west
 * 13th parallel north
 * 13th parallel south
 * 14 Andromedae
 * 14 Andromedae b
 * 14 Aquarii
 * 14 Aquilae
 * 14 Arietis
 * 14 Aurigae
 * 14 Boötis
 * 14 Camelopardalis
 * 14 Cancri
 * 14 Canis Minoris
 * 14 Ceti
 * 14 Comae Berenices
 * 14 Eridani
 * 14 Herculis
 * 14 Herculis b
 * 14 Herculis c
 * 14 Irene
 * 14 Lacertae
 * 14 Minutes Until Start
 * 14 Persei
 * 14 Sagittae
 * 14 Sagittarii
 * 14 Vulpeculae
 * 140 Siwa
 * 1400 Tirela
 * 1404 Ajax
 * 1405 Sibelius
 * 1407 Lindelöf
 * 1409 Isko
 * 140th meridian east
 * 140th meridian west
 * 141 Lumen
 * 1410 Margret
 * 1411 Brauna
 * 1412 Lagrula
 * 1414 Jérôme
 * 1416 Renauxa
 * 1419 Danzig
 * 141st meridian east
 * 141st meridian west
 * 142 Polana
 * 1421 Esperanto
 * 1422 Strömgrenia
 * 1423 Jose
 * 1424 Sundmania
 * 1425 Tuorla
 * 1426 Riviera
 * 1428 Mombasa
 * 1429 Pemba
 * 142nd meridian east
 * 142nd meridian west
 * 143 Adria
 * 1430 Somalia
 * 1431 Luanda
 * 1433 Geramtina
 * 14335 Alexosipov
 * 1434 Margot
 * 1436 Salonta
 * 1437 Diomedes
 * 1439 Vogtia
 * 143P/Kowal–Mrkos
 * 143rd meridian east
 * 143rd meridian west
 * 144 Vibilia
 * 1441 Bolyai
 * 1443 Ruppina
 * 14436 Morishita
 * 1444 Pannonia
 * 1446 Sillanpää
 * 1447 Utra
 * 1449 Virtanen
 * 144P/Kushida
 * 144th meridian east
 * 144th meridian west
 * 145 Adeona
 * 1450 Raimonda
 * 1451 Granö
 * 1452 Hunnia
 * 1453 Fennia
 * 1455 Mitchella
 * 145523 Lulin
 * 145534 Jhongda
 * 1457 Ankara
 * 1459 Magnya
 * 145th meridian east
 * 145th meridian west
 * 146 Lucina
 * 1460 Haltia
 * 1461 Jean-Jacques
 * 1462 Zamenhof
 * 14627 Emilkowalski
 * 1466 Mündleria
 * 1467 Mashona
 * 1468 Zomba
 * 1469 Linzia
 * 146th meridian east
 * 146th meridian west
 * 147 Protogeneia
 * 1470 Carla
 * 1473 Ounas
 * 1474 Beira
 * 1477 Bonsdorffia
 * 1478 Vihuri
 * 14789 GAISH
 * 1479 Inkeri
 * 147P/Kushida–Muramatsu
 * 147th meridian east
 * 147th meridian west
 * 148 Gallia
 * 1481 Tübingia
 * 14827 Hypnos
 * 14832 Alechinsky
 * 1484 Postrema
 * 1486 Marilyn
 * 14871 Pyramus
 * 148780 Altjira
 * 148th meridian east
 * 148th meridian west
 * 149 Medusa
 * 1490 Ch'ing-yang event
 * 1490 Limpopo
 * 1493 Sigrid
 * 1494 Savo
 * 1496 Turku
 * 14968 Kubáček
 * 14974 Počátky
 * 1499 Pori
 * 149th meridian east
 * 149th meridian west
 * 14P/Wolf
 * 14th FAI World Rally Flying Championship
 * 14th meridian east
 * 14th meridian west
 * 14th parallel north
 * 14th parallel south
 * 15 Andromedae
 * 15 Aquarii
 * 15 Aquilae
 * 15 Arietis
 * 15 Boötis
 * 15 Camelopardalis
 * 15 Cancri
 * 15 Canis Majoris
 * 15 Cygni
 * 15 Draconis
 * 15 Eridani
 * 15 Eunomia
 * 15 Lacertae
 * 15 Leonis Minoris
 * 15 Lyncis
 * 15 Orionis
 * 15 Sagittae
 * 15 Sagittarii
 * 15 Ursae Majoris
 * 15 Vulpeculae
 * 150 Nuwa
 * 1500 Jyväskylä
 * 15017 Cuppy
 * 1503 Kuopio
 * 1504 Lappeenranta
 * 1505 Koranna
 * 1506 Xosa
 * 1508 Kemi
 * 1509 Esclangona
 * 15092 Beegees
 * 15094 Polymele
 * 150th meridian east
 * 150th meridian west
 * 151 Abundantia
 * 1510 Charlois
 * 1511 Daléra
 * 1512 Oulu
 * 1513 Mátra
 * 1514 Ricouxa
 * 1516 Henry
 * 1517 Beograd
 * 1518 Rovaniemi
 * 151997 Bauhinia
 * 151st meridian east
 * 151st meridian west
 * 152 Atala
 * 1520 Imatra
 * 1521 Seinäjoki
 * 152188 Morricone
 * 1522 Kokkola
 * 15224 Penttilä
 * 1523 Pieksämäki
 * 1524 Joensuu
 * 1525 Savonlinna
 * 15258 Alfilipenko
 * 15262 Abderhalden
 * 15268 Wendelinefroger
 * 1527 Malmquista
 * 1529 Oterma
 * 152P/Helin–Lawrence
 * 152nd meridian east
 * 152nd meridian west
 * 153 Hilda
 * 1530 Rantaseppä
 * 1532 Inari
 * 1533 Saimaa
 * 1534 Näsi
 * 1535 Päijänne
 * 15350 Naganuma
 * 1536 Pielinen
 * 1537 Transylvania
 * 15374 Teta
 * 153P/Ikeya–Zhang
 * 153rd meridian east
 * 153rd meridian west
 * 154 Bertha
 * 1540 Kevola
 * 1541 Estonia
 * 15415 Rika
 * 1542 Schalén
 * 1543 Bourgeois
 * 1544 Vinterhansenia
 * 1545 Thernöe
 * 1546 Izsák
 * 15460 Manca
 * 154th meridian east
 * 154th meridian west
 * 155 Scylla
 * 1550 Tito
 * 1551 Argelander
 * 1552 Bessel
 * 1553 Bauersfelda
 * 1554 Yugoslavia
 * 1555 Dejan
 * 1556 Wingolfia
 * 1558 Järnefelt
 * 1559 Kustaanheimo
 * 155th meridian east
 * 155th meridian west
 * 156 Xanthippe
 * 1563 Noël
 * 1564 Srbija
 * 1565 Lemaître
 * 1566 Icarus
 * 1567 Alikoski
 * 1568 Aisleen
 * 1569 Evita
 * 156th meridian east
 * 156th meridian west
 * 157 Dejanira
 * 1570 Brunonia
 * 1573 Väisälä
 * 1574 Meyer
 * 1575 Winifred
 * 1576 Fabiola
 * 15760 Albion
 * 1578 Kirkwood
 * 157P/Tritton
 * 157th meridian east
 * 157th meridian west
 * 158 Koronis
 * 1580 Betulia
 * 1581 Abanderada
 * 15810 Arawn
 * 15811 Nüsslein-Volhard
 * 15817 Lucianotesi
 * 1582 Martir
 * 1583 Antilochus
 * 1585 Union
 * 1588 Descamisada
 * 1589 Fanatica
 * 158P/Kowal–LINEAR
 * 158th meridian east
 * 158th meridian west
 * 159 Aemilia
 * 1590 Tsiolkovskaja
 * 1597 Laugier
 * 159P/LONEOS
 * 159th meridian east
 * 159th meridian west
 * 15P/Finlay
 * 15th FAI World Precision Flying Championship
 * 15th FAI World Rally Flying Championship
 * 15th meridian east
 * 15th meridian west
 * 15th parallel north
 * 15th parallel south
 * 16 Aquarii
 * 16 Arietis
 * 16 Aurigae
 * 16 Camelopardalis
 * 16 Cephei
 * 16 Comae Berenices
 * 16 Cygni
 * 16 Cygni Bb
 * 16 Lacertae
 * 16 Librae
 * 16 Lyncis
 * 16 Lyrae
 * 16 Persei
 * 16 Psyche
 * 16 Puppis
 * 16 Sagittarii
 * 16 Serpentis
 * 16 Virginis
 * 16 Vulpeculae
 * 160 Una
 * 160-minute solar cycle
 * 1600 Vyssotsky
 * 1602 Indiana
 * 1604 Tombaugh
 * 1605 Milankovitch
 * 1607 Mavis
 * 1608 Muñoz
 * 1609 Brenda
 * 160P/LINEAR
 * 160th meridian east
 * 160th meridian west
 * 161 Athor
 * 1611 Beyer
 * 1615 Bardwell
 * 1617 Alschmitt
 * 1619 Ueta
 * 161989 Cacus
 * 161P/Hartley–IRAS
 * 161st meridian east
 * 161st meridian west
 * 162 Laurentia
 * 1620 Geographos
 * 1621 Druzhba
 * 162173 Ryugu
 * 1622 Chacornac
 * 1623 Vivian
 * 1625 The NORC
 * 1626 Sadeya
 * 1627 Ivar
 * 1628 Strobel
 * 162nd meridian east
 * 162nd meridian west
 * 163 Erigone
 * 1631 Kopff
 * 1632 Sieböhme
 * 1633 Chimay
 * 1635 Bohrmann
 * 163693 Atira
 * 1637 Swings
 * 1639 transit of Venus
 * 163P/NEAT
 * 163rd meridian east
 * 163rd meridian west
 * 164 Eva
 * 1644 Rafita
 * 164589 La Sagra
 * 1646 Rosseland
 * 1647 Menelaus
 * 1648 Shajna
 * 164P/Christensen
 * 164th meridian east
 * 164th meridian west
 * 165 Loreley
 * 1650 Heckmann
 * 1651 Behrens
 * 1652 Hergé
 * 16525 Shumarinaiko
 * 1655 Comas Solà
 * 1656 Suomi
 * 16560 Daitor
 * 1657 Roemera
 * 1658 Innes
 * 1659 Punkaharju
 * 165P/LINEAR
 * 165th meridian east
 * 165th meridian west
 * 166 Rhodope
 * 1660 Wood
 * 1661 Granule
 * 1663 van den Bos
 * 1665 Gaby
 * 1669 Dagmar
 * 166P/NEAT
 * 166th meridian east
 * 166th meridian west
 * 167 Urda
 * 1671 Chaika
 * 1672 Gezelle
 * 1675 Simonida
 * 16765 Agnesi
 * 1677 Tycho Brahe
 * 167P/CINEOS
 * 167th meridian east
 * 167th meridian west
 * 168 Sibylla
 * 1680 Per Brahe
 * 1681 Steinmetz
 * 1682 Karel
 * 1683 Castafiore
 * 1684 Iguassú
 * 1685 Toro
 * 1687 Glarona
 * 16879 Campai
 * 1688 Wilkens
 * 1689 Floris-Jan
 * 168P/Hergenrother
 * 168th meridian east
 * 168th meridian west
 * 169 Zelia
 * 1690 Mayrhofer
 * 1691 Oort
 * 1692 Subbotina
 * 1693 Hertzsprung
 * 1694 Kaiser
 * 1695 Walbeck
 * 1696 Nurmela
 * 16974 Iphthime
 * 169P/NEAT
 * 169th meridian east
 * 169th meridian west
 * 16P/Brooks
 * 16th FAI World Precision Flying Championship
 * 16th meridian east
 * 16th meridian west
 * 16th parallel north
 * 16th parallel south
 * 17 Aquarii
 * 17 Camelopardalis
 * 17 Canis Majoris
 * 17 Crateris
 * 17 Cygni
 * 17 Eridani
 * 17 King Street, Bristol
 * 17 Leporis
 * 17 Lyrae
 * 17 Monocerotis
 * 17 Persei
 * 17 Sagittarii
 * 17 Thetis
 * 17 Vulpeculae
 * 170 Maria
 * 1700 Zvezdara
 * 1703 Barry
 * 17035 Velichko
 * 1704 Wachmann
 * 1707 Chantal
 * 1708 Pólit
 * 1709 Ukraina
 * 170P/Christensen
 * 170th meridian east
 * 170th meridian west
 * 171 G. Puppis
 * 171 Ophelia
 * 1710 Gothard
 * 17102 Begzhigitova
 * 1711 Sandrine
 * 17119 Alexisrodrz
 * 1712 Angola
 * 1713 Bancilhon
 * 1714 Sy
 * 17163 Vasifedoseev
 * 1717 Arlon
 * 1719 Jens
 * 17198 Gorjup
 * 171P/Spahr
 * 171st meridian east
 * 171st meridian west
 * 172 Baucis
 * 1720 Niels
 * 1721 Wells
 * 1722 Goffin
 * 1724 Vladimir
 * 17246 Christophedumas
 * 1726 Hoffmeister
 * 1727 Mette
 * 1728 Goethe Link
 * 1729 Beryl
 * 172P/Yeung
 * 172nd meridian east
 * 172nd meridian west
 * 173 Ino
 * 1731 Smuts
 * 17314 Aisakos
 * 1732 Heike
 * 1734 Zhongolovich
 * 1735 ITA
 * 1736 Floirac
 * 1737 Severny
 * 1739 Meyermann
 * 173P/Mueller
 * 173rd meridian east
 * 173rd meridian west
 * 174 Phaedra
 * 1740 Paavo Nurmi
 * 1741 Giclas
 * 1743 Schmidt
 * 174567 Varda
 * 1746 Brouwer
 * 1747 Wright
 * 17473 Freddiemercury
 * 1748 Mauderli
 * 1749 Telamon
 * 17492 Hippasos
 * 174th meridian east
 * 174th meridian west
 * 175 Andromache
 * 1750 Eckert
 * 1751 Herget
 * 1753 Mieke
 * 1754 Cunningham
 * 1755 Lorbach
 * 1757 Porvoo
 * 1759 Kienle
 * 175th meridian east
 * 175th meridian west
 * 176 Iduna
 * 1760 Sandra
 * 1761 Edmondson
 * 1762 Russell
 * 1763 Williams
 * 1764 Cogshall
 * 1765 Wrubel
 * 1766 Slipher
 * 1767 Lampland
 * 1768 Appenzella
 * 17683 Kanagawa
 * 1769 transit of Venus observed from Tahiti
 * 176th meridian east
 * 176th meridian west
 * 177 Irma
 * 1771 Makover
 * 1772 Gagarin
 * 1775 Zimmerwald
 * 1776 Kuiper
 * 1777 Gehrels
 * 1778 Alfvén
 * 1779 Paraná
 * 17795 Elysiasegal
 * 177P/Barnard
 * 177th meridian east
 * 177th meridian west
 * 178 Belisana
 * 1780 Kippes
 * 1781 Van Biesbroeck
 * 1783 Albitskij
 * 1783 Great Meteor
 * 1784 Benguella
 * 1788 Kiess
 * 1789 Dobrovolsky
 * 178P/Hug–Bell
 * 178th meridian east
 * 178th meridian west
 * 179 Klytaemnestra
 * 1790 Volkov
 * 1791 Patsayev
 * 1793 Zoya
 * 1796 Riga
 * 1798 Watts
 * 1799 Koussevitzky
 * 179th meridian east
 * 179th meridian west
 * 17K-AM
 * 17th FAI World Precision Flying Championship
 * 17th meridian east
 * 17th meridian west
 * 17th parallel north
 * 17th parallel south
 * 18 Andromedae
 * 18 Aquarii
 * 18 Aquilae
 * 18 Aurigae
 * 18 Boötis
 * 18 Camelopardalis
 * 18 Delphini
 * 18 Delphini b
 * 18 Draconis
 * 18 Melpomene
 * 18 Monocerotis
 * 18 Sagittarii
 * 18 Scorpii
 * 18 Tauri
 * 18 Ursae Majoris
 * 18 Vulpeculae
 * 180 Garumna
 * 1800 Aguilar
 * 1801 Titicaca
 * 1803 Zwicky
 * 1804 Chebotarev
 * 1805 Dirikis
 * 1806 Derice
 * 1806-20 cluster
 * 1807 Slovakia
 * 1809 Prometheus
 * 180th meridian
 * 181 Eucharis
 * 1810 Epimetheus
 * 18117 Jonhodge
 * 1815 Beethoven
 * 1817 Katanga
 * 1818 Brahms
 * 182 Elsa
 * 1822 Waterman
 * 1823 Gliese
 * 1824 Haworth
 * 1825 Klare
 * 1826 Miller
 * 1827 Atkinson
 * 183 Istria
 * 1830 Pogson
 * 1831 Nicholson
 * 1832 Mrkos
 * 1834 Palach
 * 1835 Gajdariya
 * 1836 Komarov
 * 1837 Osita
 * 184 Dejopeja
 * 1840 Hus
 * 1841 Masaryk
 * 1842 Hynek
 * 1844 Susilva
 * 1845 Helewalda
 * 1846 Bengt
 * 1847 Stobbe
 * 1848 Delvaux
 * 1849 Kresák
 * 18493 Demoleon
 * 185 Eunike
 * 1850 Kohoutek
 * 1851 Lacroute
 * 1852 Carpenter
 * 1853 McElroy
 * 1854 Skvortsov
 * 1855 Korolev
 * 1856 Růžena
 * 185638 Erwinschwab
 * 1857 Parchomenko
 * 1858 Lobachevskij
 * 1859 Kovalevskaya
 * 186 Celuta
 * 1860 Great Meteor
 * 1861 Komenský
 * 18610 Arthurdent
 * 1862 Apollo
 * 1863 Antinous
 * 1864 Daedalus
 * 1865 Cerberus
 * 1866 Sisyphus
 * 1867 Deiphobus
 * 1868 Thersites
 * 1869 Philoctetes
 * 187 Lamberta
 * 1870 Glaukos
 * 1873 Agenor
 * 1874 Transit of Venus Expedition to Campbell Island
 * 1874 Transit of Venus Expedition to Hawaii
 * 1874 transit of Venus
 * 1877 Marsden
 * 1879 Broederstroom
 * 188 Menippe
 * 1881 Shao
 * 1882 transit of Venus
 * 1887 Virton
 * 18880 Toddblumberg
 * 1889 Pakhmutova
 * 189 Phthia
 * 1897 Hind
 * 18D/Perrine–Mrkos
 * 18th FAI World Precision Flying Championship
 * 18th meridian east
 * 18th meridian west
 * 18th parallel north
 * 18th parallel south
 * 19 Aquarii
 * 19 Aquilae
 * 19 Arietis
 * 19 Aurigae
 * 19 Camelopardalis
 * 19 Canum Venaticorum
 * 19 Cephei
 * 19 Draconis
 * 19 Fortuna
 * 19 Lyncis
 * 19 Lyrae
 * 19 Monocerotis
 * 19 Puppis
 * 19 Tauri
 * 19 Vulpeculae
 * 190 Ismene
 * 1900 Katyusha
 * 1902 Shaposhnikov
 * 1904 Massevitch
 * 1905 Ambartsumian
 * 1906 Naef
 * 1907 Rudneva
 * 1909 Alekhin
 * 191 Kolga
 * 1910 Mikhailov
 * 1911 Schubart
 * 1912 Anubis
 * 1913 Great Meteor Procession
 * 19139 Apian
 * 1915 Quetzálcoatl
 * 1916 Boreas
 * 1917 Cuyo
 * 1918 Aiguillon
 * 1919 Clemence
 * 192 Nausikaa
 * 1920s Berlin
 * 1921 Pala
 * 1922 Zulu
 * 1923 Osiris
 * 1924 Horus
 * 1925 Franklin-Adams
 * 1927 Suvanto
 * 1928 Summa
 * 1929 Kollaa
 * 193 Ambrosia
 * 1930 Curuçá River event
 * 1930 Lucifer
 * 1931 Čapek
 * 1933 Tinchen
 * 1936 Lugano
 * 19367 Pink Floyd
 * 1938 Lausanna
 * 1938 USDA soil taxonomy
 * 19383 Rolling Stones
 * 1939 Loretta
 * 194 Prokne
 * 1940 Whipple
 * 1941 Wild
 * 1943 Anteros
 * 1944 Günter
 * 1946 Walraven
 * 1947 Iso-Heikkilä
 * 195 Eurykleia
 * 1951 Lick
 * 1951 in spaceflight
 * 1952 Hesburgh
 * 1952 in spaceflight
 * 19521 Chaos
 * 1953 Rupertwildt
 * 1953 in spaceflight
 * 1954 Kukarkin
 * 1954 in spaceflight
 * 1955 Louisiana Highway renumbering
 * 1955 McMath
 * 1955 in spaceflight
 * 1956 Artek
 * 1956 in spaceflight
 * 1957 Angara
 * 1957 in spaceflight
 * 1958 Chandra
 * 1958 in spaceflight
 * 1959 in spaceflight
 * 196 Philomela
 * 1960 Guisan
 * 1960 in spaceflight
 * 1960 in spaceflight (January–June)
 * 1960 in spaceflight (July–December)
 * 1961 Dufour
 * 1961 in spaceflight
 * 1961 in spaceflight (January–June)
 * 1961 in spaceflight (July–December)
 * 1962 in spaceflight
 * 1962 in spaceflight (April–June)
 * 1962 in spaceflight (January–March)
 * 1962 in spaceflight (July–September)
 * 1962 in spaceflight (October–December)
 * 1963 in spaceflight
 * 1963 in spaceflight (January–June)
 * 1963 in spaceflight (July–December)
 * 1964 in spaceflight
 * 1964 in spaceflight (April–June)
 * 1964 in spaceflight (January–March)
 * 1964 in spaceflight (July–September)
 * 1964 in spaceflight (October–December)
 * 1965 in spaceflight
 * 1965 in spaceflight (April–June)
 * 1965 in spaceflight (January–March)
 * 1965 in spaceflight (July–September)
 * 1965 in spaceflight (October–December)
 * 1965 van de Kamp
 * 1966 NASA T-38 crash
 * 1966 in spaceflight
 * 1967 Menzel
 * 1967 in spaceflight
 * 1968 in spaceflight
 * 1969 (TV series)
 * 1969 in spaceflight
 * 197 Arete
 * 1970 in spaceflight
 * 1971 Hagihara
 * 1971 in spaceflight
 * 1972 Great Daylight Fireball
 * 1972 in spaceflight
 * 1973 in spaceflight
 * 19738 Calinger
 * 1974 in spaceflight
 * 19741 Callahan
 * 1975 in spaceflight
 * 1976 in spaceflight
 * 19763 Klimesh
 * 1977 Shura
 * 1977 in spaceflight
 * 1978 in spaceflight
 * 1979 Sakharov
 * 1979 XB
 * 1979 in spaceflight
 * 198 Ampella
 * 1980 Plesetsk launch pad disaster
 * 1980 Tezcatlipoca
 * 1980 in spaceflight
 * 1981 Midas
 * 1981 in spaceflight
 * 1982 Cline
 * 1982 in spaceflight
 * 1983 Bok
 * 1983 in spaceflight
 * 1984 in spaceflight
 * 19848 Yeungchuchiu
 * 1985 Beirut car bombings
 * 1985 Hopmann
 * 1985 in spaceflight
 * 1986 State of the Union Address
 * 1986 in spaceflight
 * 1987 Kaplan
 * 1987 in spaceflight
 * 1988 Delores
 * 1988 Lubbock apparition of Mary
 * 1988 in spaceflight
 * 1989 Tatry
 * 1989 in spaceflight
 * 199 Byblis
 * 1990 Pilcher
 * 1990 in spaceflight
 * 1991 BA
 * 1991 Darwin
 * 1991 Halloween blizzard
 * 1991 VG
 * 1991 in spaceflight
 * 1991 in spaceflight (January–June)
 * 1991 in spaceflight (July–December)
 * 1992 Galvarino
 * 1992 in spaceflight
 * 1993 DA
 * 1993 RP
 * 1993 in spaceflight
 * 1994 Shane
 * 1994 WR12
 * 1994 in spaceflight
 * 1995 GJ
 * 1995 Hajek
 * 1995 SN55
 * 1995 in spaceflight
 * 1996 Adams
 * 1996 PW
 * 1996 in spaceflight
 * 1997 Leverrier
 * 1997 in spaceflight
 * 1998 DK36
 * 1998 KY26
 * 1998 Titius
 * 1998 WW31
 * 1998 in spaceflight
 * 19982 Barbaradoore
 * 1999 AO10
 * 1999 Hirayama
 * 1999 LE31
 * 1999 OJ4
 * 1999 TR11
 * 1999 XS35
 * 1999 in spaceflight
 * 19P/Borrelly
 * 19th meridian east
 * 19th meridian west
 * 19th parallel north
 * 19th parallel south
 * 1E 161348-5055
 * 1ES 1101-232
 * 1KUNS-PF
 * 1RXS
 * 1RXS J160929.1−210524
 * 1st meridian east
 * 1st meridian west
 * 1st parallel north
 * 1st parallel south
 * 2 Andromedae
 * 2 Aurigae
 * 2 Boötis
 * 2 Camelopardalis
 * 2 Centauri
 * 2 Ceti
 * 2 Cygni
 * 2 Equulei
 * 2 Lacertae
 * 2 Lupi
 * 2 Lyncis
 * 2 Pallas
 * 2 Pegasi
 * 2 Persei
 * 2 Piscis Austrini
 * 2 Scorpii
 * 2 Sextantis
 * 2 Ursae Minoris
 * 2 Vulpeculae
 * 2,2,2-Trifluoroethanol
 * 2.01 (Buran-class spacecraft)
 * 2.02 (Buran-class spacecraft)
 * 2.03 (Buran-class spacecraft)
 * 20 Aquarii
 * 20 Aquilae
 * 20 Arietis
 * 20 Boötis
 * 20 Cancri
 * 20 Canum Venaticorum
 * 20 Ceti
 * 20 Cygni
 * 20 Leonis Minoris
 * 20 Massalia
 * 20 Million Miles to Earth
 * 20 Monocerotis
 * 20 Ophiuchi
 * 20 Persei
 * 20 Puppis
 * 20 Vulpeculae
 * 200 Dynamene
 * 2000 AD (comics)
 * 2000 DG8
 * 2000 EM26
 * 2000 Herschel
 * 2000 SG344
 * 2000 in spaceflight
 * 20000 Varuna
 * 2001 AV43
 * 2001 Einstein
 * 2001 GO2
 * 2001 Mars Odyssey
 * 2001 QR322
 * 2001 QW322
 * 2001 YB5
 * 2001 in spaceflight
 * 2001: A Space Odyssey
 * 2001: A Space Odyssey (comics)
 * 2001: A Space Odyssey (film)
 * 2001: A Space Odyssey (novel)
 * 2001: A Space Odyssey (score)
 * 2001: A Space Odyssey (soundtrack)
 * 2001: A Space Odyssey in popular culture
 * 2001: A Space Travesty
 * 2002 AA29
 * 2002 AT4
 * 2002 Eastern Mediterranean event
 * 2002 Euler
 * 2002 GB32
 * 2002 JE9
 * 2002 MN
 * 2002 NY40
 * 2002 RN109
 * 2002 Vitim event
 * 2002 XV93
 * 2002 in spaceflight
 * 2003 BR47
 * 2003 E2 nightclub stampede
 * 2003 Harding
 * 2003 LA7
 * 2003 QX113
 * 2003 SM84
 * 2003 SQ317
 * 2003 SS422
 * 2003 YN107
 * 2003 in spaceflight
 * 2004 BX159
 * 2004 FH
 * 2004 FU162
 * 2004 HR56
 * 2004 KV18
 * 2004 Lexell
 * 2004 TG10
 * 2004 TN1
 * 2004 XP14
 * 2004 XR190
 * 2004 in spaceflight
 * 2004 transit of Venus
 * 2005 HC4
 * 2005 Hencke
 * 2005 NB56
 * 2005 RH52
 * 2005 TN53
 * 2005 TN74
 * 2005 VX3
 * 2005 WY55
 * 2005 in spaceflight
 * 2006 BL8
 * 2006 HH123
 * 2006 JY26
 * 2006 LM1
 * 2006 Mumbai sweet seawater incident
 * 2006 North Korean missile test
 * 2006 Polonskaya
 * 2006 QH181
 * 2006 QQ23
 * 2006 QV89
 * 2006 RH120
 * 2006 RJ103
 * 2006 in spaceflight
 * 2006 nightlife legislation in New York City
 * 2007 BP102
 * 2007 Carancas impact event
 * 2007 Chinese anti-satellite missile test
 * 2007 FT3
 * 2007 McCuskey
 * 2007 NC7
 * 2007 TU24
 * 2007 UW1
 * 2007 VE191
 * 2007 VK184
 * 2007 WD5
 * 2007 in spaceflight
 * 2008 AO112
 * 2008 CK70
 * 2008 FF5
 * 2008 HJ
 * 2008 Konstitutsiya
 * 2008 LC18
 * 2008 TC3
 * 2008 VL14
 * 2008 in spaceflight
 * 2009 BD
 * 2009 DD45
 * 2009 Jupiter impact event
 * 2009 KK
 * 2009 North Korean missile tests
 * 2009 RR
 * 2009 Sulawesi superbolide
 * 2009 VA
 * 2009 Voloshina
 * 2009 in spaceflight
 * 2009 satellite collision
 * 201 Penelope
 * 2010 AA15
 * 2010 AB78
 * 2010 AL30
 * 2010 AU118
 * 2010 BK118
 * 2010 Chebyshev
 * 2010 Chinese anti-ballistic missile test
 * 2010 EU65
 * 2010 FX86
 * 2010 GA6
 * 2010 GB174
 * 2010 GZ60
 * 2010 JL88
 * 2010 JO179
 * 2010 Jupiter impact event
 * 2010 KQ
 * 2010 KZ39
 * 2010 RF12
 * 2010 RF43
 * 2010 RX30
 * 2010 TD54
 * 2010 TJ
 * 2010 TK7
 * 2010 Tonight Show conflict
 * 2010 VR11
 * 2010 WC9
 * 2010 WG9
 * 2010 World Geothermal Congress
 * 2010 XC15
 * 2010 XG11
 * 2010 in spaceflight
 * 2010: Odyssey Two
 * 2010: The Year We Make Contact
 * 2011 CQ1
 * 2011 EO40
 * 2011 ES4
 * 2011 FW62
 * 2011 GA
 * 2011 HM102
 * 2011 KW48
 * 2011 MD
 * 2011 MM4
 * 2011 QF99
 * 2011 SC191
 * 2011 SL25
 * 2011 UN63
 * 2011 Veteraniya
 * 2011 WL2
 * 2011 XC2
 * 2011 in spaceflight
 * 2012 (film)
 * 2012 Aurora, Colorado shooting
 * 2012 BX34
 * 2012 DR30
 * 2012 EG5
 * 2012 FC71
 * 2012 FN
 * 2012 FP35
 * 2012 GX17
 * 2012 Guo Shou-Jing
 * 2012 HE85
 * 2012 KP24
 * 2012 KT42
 * 2012 LZ1
 * 2012 National Reconnaissance Office space telescope donation to NASA
 * 2012 TC4
 * 2012 TV
 * 2012 UE34
 * 2012 UK meteoroid
 * 2012 VP113
 * 2012 XE133
 * 2012 YQ1
 * 2012 in spaceflight
 * 2012 phenomenon
 * 2012 transit of Venus
 * 2012: Supernova
 * 2013 AT183
 * 2013 AZ60
 * 2013 BL76
 * 2013 BS45
 * 2013 EC
 * 2013 ET
 * 2013 FQ28
 * 2013 FS28
 * 2013 FT28
 * 2013 FW13
 * 2013 GM3
 * 2013 JX28
 * 2013 LA2
 * 2013 LX28
 * 2013 ND15
 * 2013 North Korean missile tests
 * 2013 PJ10
 * 2013 RA109
 * 2013 RF98
 * 2013 RH74
 * 2013 SK100
 * 2013 SL102
 * 2013 SY99
 * 2013 TV135
 * 2013 TX68
 * 2013 Tucapel
 * 2013 UH15
 * 2013 XY8
 * 2013 YP139
 * 2013 in spaceflight
 * 2014 AA
 * 2014 AF5
 * 2014 DX110
 * 2014 EC
 * 2014 FC69
 * 2014 FC72
 * 2014 FE72
 * 2014 FZ71
 * 2014 HQ124
 * 2014 JO25
 * 2014 LY21
 * 2014 MT69
 * 2014 MV67
 * 2014 North Korean missile tests
 * 2014 OE394
 * 2014 OL339
 * 2014 OO6
 * 2014 OS393
 * 2014 Ontario fireball
 * 2014 PN70
 * 2014 Peshawar cinema bombings
 * 2014 RC
 * 2014 SC324
 * 2014 SR349
 * 2014 SS349
 * 2014 ST373
 * 2014 SV349
 * 2014 UR116
 * 2014 UZ224
 * 2014 Vasilevskis
 * 2014 XL7
 * 2014 YX49
 * 2014 in spaceflight
 * 2015 AZ43
 * 2015 BP513
 * 2015 BP519
 * 2015 FJ345
 * 2015 GT50
 * 2015 HM10
 * 2015 KE172
 * 2015 KG163
 * 2015 KH162
 * 2015 KH163
 * 2015 KQ174
 * 2015 Kerala meteoroid
 * 2015 Lafayette shooting
 * 2015 ME131
 * 2015 RX245
 * 2015 RY245
 * 2015 SO2
 * 2015 TB145
 * 2015 TC25
 * 2015 TH367
 * 2015 Thailand bolide
 * 2015 XJ351
 * 2015 XX169
 * 2015 XY261
 * 2015 YA
 * 2015 YQ1
 * 2015 YU9
 * 2015 in spaceflight
 * 2016 AZ8
 * 2016 DV1
 * 2016 EU85
 * 2016 Heinemann
 * 2016 NL56
 * 2016 PQ
 * 2016 San Pablito Market fireworks explosion
 * 2016 WF9
 * 2016 in spaceflight
 * 2017 AG13
 * 2017 BQ6
 * 2017 BS5
 * 2017 China bolide
 * 2017 DB120
 * 2017 DR109
 * 2017 FO161
 * 2017 FZ2
 * 2017 MB7
 * 2017 MZ8
 * 2017 North Korean missile tests
 * 2017 OF69
 * 2017 OO1
 * 2017 QC36
 * 2017 QP1
 * 2017 SG33
 * 2017 SN16
 * 2017 SX17
 * 2017 TD6
 * 2017 Total Solar Eclipse stamp
 * 2017 UV43
 * 2017 VL2
 * 2017 VR12
 * 2017 VW13
 * 2017 Wesson
 * 2017 XO2
 * 2017 XX61
 * 2017 YE5
 * 2017 YZ1
 * 2017 in spaceflight
 * 2018 AH
 * 2018 BD
 * 2018 BF3
 * 2018 CB
 * 2018 CC
 * 2018 CF2
 * 2018 CL
 * 2018 CN2
 * 2018 CY2
 * 2018 DV1
 * 2018 GE3
 * 2018 LA
 * 2018 LF16
 * 2018 PD20
 * 2018 RY7
 * 2018 UA
 * 2018 VG18
 * 2018 VM35
 * 2018 VP1
 * 2018 WV1
 * 2018 XB4
 * 2018 in spaceflight
 * 2019 AQ3
 * 2019 AS5
 * 2019 BE5
 * 2019 BO
 * 2019 BZ3
 * 2019 GC6
 * 2019 LF6
 * 2019 MO
 * 2019 OK
 * 2019 OU1
 * 2019 PG1
 * 2019 SU3
 * 2019 TA7
 * 2019 TF7
 * 2019 UN13
 * 2019 in spaceflight
 * 2019 van Albada
 * 202 Chryseïs
 * 2020 AV2
 * 2020 BX12
 * 2020 CD3
 * 2020 CW
 * 2020 HA10
 * 2020 HS7
 * 2020 JJ
 * 2020 LD
 * 2020 OV1
 * 2020 OY4
 * 2020 QG
 * 2020 SO
 * 2020 VT4
 * 2020 VV
 * 2020 XR
 * 2020 in spaceflight
 * 2020 in spaceflight (January–June)
 * 2020 in spaceflight (July–December)
 * 2020s in spaceflight
 * 2021 in spaceflight
 * 2022 West
 * 2022 in spaceflight
 * 2023 Asaph
 * 2023 in spaceflight
 * 2024 McLaughlin
 * 2024 in spaceflight
 * 2026 Cottrell
 * 2028 Janequeo
 * 2029 Binomi
 * 203 Pompeja
 * 2031 BAM
 * 2032 Ethel
 * 20325 Julianoey
 * 2033 Basilea
 * 2034 Bernoulli
 * 2035 Stearns
 * 2036 Origin Unknown
 * 2036 Sheragul
 * 2037 Tripaxeptalis
 * 2038 Bistro
 * 2039 Payne-Gaposchkin
 * 204 Kallisto
 * 2043 Ortutay
 * 2044 Wirt
 * 2046 Leningrad
 * 20461 Dioretsa
 * 2047 Smetana
 * 20488 Pic-du-Midi
 * 205 Martha
 * 2052 Tamriko
 * 2054 Gawain
 * 2055 Dvořák
 * 2056 Nancy
 * 2058 Róka
 * 2059 Baboquivari
 * 206 Hersilia
 * 2060 Chiron
 * 2061 Anza
 * 2061: Odyssey Three
 * 2062 Aten
 * 2063 Bacchus
 * 2064 Thomsen
 * 2065 Spicer
 * 2067 Aksnes
 * 2069 Alpha Centauri mission
 * 2069 Hubble
 * 206P/Barnard–Boattini
 * 207 Hedda
 * 2072 Kosmodemyanskaya
 * 2074 Shoemaker
 * 208 Lacrimosa
 * 2080 Jihlava
 * 2081: A Hopeful View of the Human Future
 * 2085 Henan
 * 20898 Fountainhills
 * 208P/McMillan
 * 209 Dido
 * 2090 Mizuho
 * 2091 Sampo
 * 2093 Genichesk
 * 20936 Nemrut Dagi
 * 2094 Magnitka
 * 2098 Zyskin
 * 2099 Öpik
 * 209P/LINEAR
 * 20D/Westphal
 * 20th Century Limited
 * 20th meridian east
 * 20th meridian west
 * 20th parallel north
 * 20th parallel south
 * 21 Aquarii
 * 21 Aquilae
 * 21 Arietis
 * 21 Camelopardalis
 * 21 Cancri
 * 21 Canum Venaticorum
 * 21 Comae Berenices
 * 21 Leonis Minoris
 * 21 Lutetia
 * 21 Lyncis
 * 21 Persei
 * 21 Sagittarii
 * 21 Tauri
 * 21 Vulpeculae
 * 210 Isabella
 * 2100 Ra-Shalom
 * 2101 Adonis
 * 2102 Tantalus
 * 2104 Toronto
 * 21062 Iasky
 * 21088 Chelyabinsk
 * 211 Isolda
 * 2111 Tselina
 * 2114 Wallenquist
 * 212 Medea
 * 2120 Tyumenia
 * 2121 Sevastopol
 * 2122 Pyatiletka
 * 2123 Vltava
 * 2126 Gerasimovich
 * 2127 Tanya
 * 213 Lilaea
 * 2131 Mayall
 * 2134 Dennispalm
 * 2135 Aristaeus
 * 2139 Makharadze
 * 214 Aschera
 * 2140 Kemerovo
 * 2143 Jimarnold
 * 21436 Chaoyichi
 * 2145 Blaauw
 * 2146 Stentor
 * 2148 Epeios
 * 215 Oenone
 * 21501 Acevedo
 * 21509 Lucascavin
 * 2151 Hadwiger
 * 2153 Akiyama
 * 21558 Alisonliu
 * 2156 Kate
 * 2159 Kukkamäki
 * 216 Kleopatra
 * 216433 Milianleo
 * 2169 Taiwan
 * 217 Eudora
 * 2173 Maresjev
 * 2175 Andrea Doria
 * 21795 Masi
 * 218 Bianca
 * 2181 Fogelin
 * 2187 La Silla
 * 21873 Jindřichůvhradec
 * 219 Thusnelda
 * 21900 Orus
 * 2195 Tengström
 * 2197 Shanghai
 * 21P/Giacobini–Zinner
 * 21st meridian east
 * 21st meridian west
 * 21st parallel north
 * 21st parallel south
 * 22 Andromedae
 * 22 Aquilae
 * 22 Aurigae
 * 22 Boötis
 * 22 Camelopardalis
 * 22 Cygni
 * 22 Kalliope
 * 22 Orionis
 * 22 Scorpii
 * 22 Tauri
 * 22 Vulpeculae
 * 220 Stephania
 * 2201 Oljato
 * 2202 Pele
 * 2204 Lyyli
 * 2207 Antenor
 * 221 Eos
 * 2212 Hephaistos
 * 2213 Meeus
 * 221628 Hyatt
 * 222 Lucia
 * 2223 Sarpedon
 * 2227 Otto Struve
 * 2228 Soyuz-Apollo
 * 223 Rosa
 * 224 Oceana
 * 2241 Alcathous
 * 2244 Tesla
 * 2246 Bowell
 * 225 Henrietta
 * 225088 Gonggong
 * 2253 Espinette
 * 22577 Alfiuccio
 * 226 Weringia
 * 2260 Neoptolemus
 * 227 Philosophia
 * 22740 Rayleigh
 * 2278 Götz
 * 228 Agathe
 * 2285 Ron Helin
 * 22899 Alconrad
 * 229 Adelinda
 * 2296 Kugultinov
 * 229762 Gǃkúnǁʼhòmdímà
 * 22P/Kopff
 * 22nd meridian east
 * 22nd meridian west
 * 22nd parallel north
 * 22nd parallel south
 * 23 Andromedae
 * 23 Aquilae
 * 23 Camelopardalis
 * 23 Comae Berenices
 * 23 Cygni
 * 23 Librae
 * 23 Librae b
 * 23 Librae c
 * 23 Orionis
 * 23 Thalia
 * 23 Ursae Majoris
 * 23 Vulpeculae
 * 230 Athamantis
 * 2301 Whitford
 * 2308 Schilt
 * 231 Vindobona
 * 2311 El Leoncito
 * 2312 (novel)
 * 2312 Duboshin
 * 23131 Debenedictis
 * 232 Russia
 * 2324 Janice
 * 2325 Chernykh
 * 2328 Robeson
 * 233 Asterope
 * 23327 Luchernandez
 * 234 Barbara
 * 2340 Hathor
 * 23436 Alekfursenko
 * 2348 Michkovitch
 * 2349 Kurchenko
 * 235 Carolina
 * 2350 BC Middle East Anomaly
 * 2357 Phereclos
 * 236 Honoria
 * 2363 Cebriones
 * 2368 Beltrovata
 * 237 Coelestina
 * 23712 Willpatrick
 * 23718 Horgos
 * 238 Hypatia
 * 2384 Schulhof
 * 238P/Read
 * 239 Adrastea
 * 2391 Tomita
 * 23P/Brorsen–Metcalf
 * 23rd meridian east
 * 23rd meridian west
 * 23rd parallel north
 * 23rd parallel south
 * 24 Aquarii
 * 24 Aquilae
 * 24 Boötis
 * 24 Camelopardalis
 * 24 Cancri
 * 24 Canum Venaticorum
 * 24 Capricorni
 * 24 Cephei
 * 24 Comae Berenices
 * 24 Hours of Explicit Sex
 * 24 Lyncis
 * 24 Persei
 * 24 Scorpii
 * 24 Sextantis
 * 24 Themis
 * 24 Ursae Majoris
 * 24 Vulpeculae
 * 240 Vanadis
 * 241 Germania
 * 24101 Cassini
 * 24105 Broughton
 * 242 Kriemhild
 * 2420 Čiurlionis
 * 2423 Ibarruri
 * 24260 Kriváň
 * 2429 Schürer
 * 243 Ida
 * 2430 Bruce Helin
 * 2433 Sootiyo
 * 2436 Hatshepsut
 * 244 Sita
 * 2440 Educatio
 * 2442 Corbett
 * 2443 Tomeileen
 * 2449 Kenos
 * 245 Vera
 * 2456 Palamedes
 * 246 Asporina
 * 24626 Astrowizard
 * 246P/NEAT
 * 247 Eukrate
 * 2478 Tokai
 * 248 Lameia
 * 24827 Maryphil
 * 2483 Guinevere
 * 2486 Metsähovi
 * 249 Ilse
 * 2490 Bussolini
 * 24988 Alainmilsztajn
 * 24P/Schaumasse
 * 24th meridian east
 * 24th meridian west
 * 24th parallel north
 * 24th parallel south
 * 25 Aquarii
 * 25 Arietis
 * 25 Cancri
 * 25 Canum Venaticorum
 * 25 Orionis
 * 25 Phocaea
 * 25 Scorpii
 * 25 Serpentis
 * 25 Vulpeculae
 * 25 Years (song)
 * 250 Bettina
 * 2500 Alascattalo
 * 25000 Astrometria
 * 251 Sophia
 * 25108 Boström
 * 2513 Baetslé
 * 25143 Itokawa
 * 2518 Rutllant
 * 252 Clementina
 * 252P/LINEAR
 * 253 Mathilde
 * 2531 Cambridge
 * 2537 Gilmore
 * 254 Augusta
 * 2542 Calpurnia
 * 255 Oppavia
 * 2554 Skiff
 * 255P/Levy
 * 256 Walpurga
 * 257 Silesia
 * 2571 Geisei
 * 2572 Annschnell
 * 2575 Bulgaria
 * 2577 Litva
 * 2578 Saint-Exupéry
 * 258 Tyche
 * 259 Aletheia
 * 2590 Mourão
 * 2591 Dworetsky
 * 25924 Douglasadams
 * 2594 Acamas
 * 2598 Merlin
 * 25D/Neujmin
 * 25th meridian east
 * 25th meridian west
 * 25th meridian west from Washington
 * 25th parallel north
 * 25th parallel south
 * 25zero
 * 26 Andromedae
 * 26 Aquarii
 * 26 Aquilae
 * 26 Arietis
 * 26 Aurigae
 * 26 Boötis
 * 26 Camelopardalis
 * 26 Canis Majoris
 * 26 Cygni
 * 26 Draconis
 * 26 Hydrae
 * 26 Proserpina
 * 26 Ursae Majoris
 * 26 Vulpeculae
 * 260 Huberta
 * 2606 Odessa
 * 26074 Carlwirtz
 * 2608 Seneca
 * 261 Prymno
 * 2613 Plzeň
 * 262 Valda
 * 2623 Zech
 * 2629 Rudra
 * 263 Dresda
 * 2637 Bobrovnikoff
 * 264 Libussa
 * 2644 Victor Jara
 * 2648 Owa
 * 265 Anna
 * 2658 Gingerich
 * 266 Aline
 * 2661 Bydžovský
 * 266P/Christensen
 * 267 Tirza
 * 2672 Písek
 * 2674 Pandarus
 * 2675 Tolkien
 * 2678 Aavasaksa
 * 268 Adorea
 * 2685 Masursky
 * 26858 Misterrogers
 * 269 Justitia
 * 2691 Sersic
 * 2696 Magion
 * 2697 Albina
 * 26P/Grigg–Skjellerup
 * 26th Congress of the Communist Party of the Soviet Union (diamond)
 * 26th meridian east
 * 26th meridian west
 * 26th parallel north
 * 26th parallel south
 * 27 Aquilae
 * 27 Arietis
 * 27 Cancri
 * 27 Canis Majoris
 * 27 Cygni
 * 27 Euterpe
 * 27 Hydrae
 * 27 Lyncis
 * 27 Monocerotis
 * 27 Piscium
 * 27 Vulpeculae
 * 270 Anahita
 * 2708 Burns
 * 2709 Sagan
 * 271 Penthesilea
 * 271P/van Houten–Lemmon
 * 272 Antonia
 * 2726 Kotelnikov
 * 27270 Guidotti
 * 273 Atropos
 * 2730 Barks
 * 2732 Witt
 * 273P/Pons–Gambart
 * 274 Philagoria
 * 2741 Valdivia
 * 274301 Wikipedia
 * 2744 Birgitta
 * 2747 Český Krumlov
 * 275 Sapientia
 * 2751 Campbell
 * 2752 Wu Chien-Shiung
 * 2754 Efimov
 * 2759 Idomeneus
 * 276 Adelheid
 * 276P/Vorobjov
 * 277 Elvira
 * 278 Paulina
 * 279 Thule
 * 2797 Teucer
 * 27P/Crommelin
 * 27th meridian east
 * 27th meridian west
 * 27th meridian west from Washington
 * 27th parallel north
 * 27th parallel south
 * 28 Andromedae
 * 28 Aquarii
 * 28 Aquilae
 * 28 Aurigae
 * 28 Bellona
 * 28 Camelopardalis
 * 28 Cancri
 * 28 Cygni
 * 28 Monocerotis
 * 28 Vulpeculae
 * 280 Philia
 * 2807 Karl Marx
 * 281 Lucretia
 * 2815 Soma
 * 282 Clorinde
 * 2826 Ahti
 * 2829 Bobhope
 * 283 Emma
 * 2830 Greenwich
 * 2839 Annette
 * 284 Amalia
 * 28439 Miguelreyes
 * 284996 Rosaparks
 * 285 Regina
 * 286 Iclea
 * 2862 Vavilov
 * 2865 Laurel
 * 2867 Šteins
 * 287 Nephthys
 * 2873 Binzel
 * 2874 Jim Young
 * 288 Glauke
 * 2882 Tedesco
 * 289 Nenetta
 * 2892 Filipenko
 * 2893 Peiroos
 * 2895 Memnon
 * 28978 Ixion
 * 289P/Blanpain
 * 28P/Neujmin
 * 28th meridian east
 * 28th meridian west
 * 28th parallel north
 * 28th parallel south
 * 29 Amphitrite
 * 29 Aquarii
 * 29 Arietis
 * 29 Camelopardalis
 * 29 Cancri
 * 29 Cygni
 * 29 Herculis
 * 29 Orionis
 * 29 Persei
 * 29 Vulpeculae
 * 290 Bruna
 * 2903 Zhuhai
 * 2905 Plaskett
 * 2906 Caltech
 * 291 Alice
 * 292 Ludovica
 * 2920 Automedon
 * 2927 Alamosa
 * 29292 Conniewalker
 * 293 Brasilia
 * 2934 Aristophanes
 * 2937 Gibbs
 * 2939 Coconino
 * 294 Felicia
 * 2940 Bacon
 * 2942 Cordie
 * 295 Theresia
 * 2956 Yeomans
 * 2959 Scholl
 * 296 Phaëtusa
 * 297 Caecilia
 * 2975 Spahr
 * 298 Baptistina
 * 2980 Cameron
 * 2981 Chagall
 * 2984 Chaucer
 * 2985 Shakespeare
 * 299 Thora
 * 2995 Taratuta
 * 2997 Cabrera
 * 29P/Schwassmann–Wachmann
 * 29th meridian east
 * 29th meridian west
 * 29th parallel north
 * 29th parallel south
 * 2:37
 * 2I/Borisov
 * 2M 1237+6526
 * 2M1101AB
 * 2M1207
 * 2M1207b
 * 2M1510
 * 2MASS
 * 2MASS 0036+1821
 * 2MASS 0532+8246
 * 2MASS 0939−2448
 * 2MASS 1503+2525
 * 2MASS 1507−1627
 * 2MASS J02431371−2453298
 * 2MASS J03552337+1133437
 * 2MASS J04151954−0935066
 * 2MASS J04414489+2301513
 * 2MASS J0523−1403
 * 2MASS J10475385+2124234
 * 2MASS J11145133−2618235
 * 2MASS J1119–1137
 * 2MASS J11263991−5003550
 * 2MASS J154043.42−510135.7
 * 2MASS J18082002−5104378
 * 2MASS J18352154–3123385
 * 2MASS J18450079–1409036
 * 2MASS J19383260+4603591
 * 2MASS J19383260+4603591 b
 * 2MASS J2126–8140
 * 2MASS J21392676+0220226
 * 2MASS J22282889–4310262
 * 2MASS-GC02
 * 2MASSI J0937347+293142
 * 2MASX J00482185−2507365 occulting pair
 * 2XMM J083026+524133
 * 2d Space Operations Squadron
 * 2d3
 * 2dF Galaxy Redshift Survey
 * 2nd meridian east
 * 2nd meridian west
 * 2nd parallel north
 * 2nd parallel south
 * 2suit
 * 3 Andromedae
 * 3 Aquarii
 * 3 Boötis
 * 3 Camelopardalis
 * 3 Cancri
 * 3 Cassiopeiae
 * 3 Centauri
 * 3 Ceti
 * 3 Corner Satellite
 * 3 Corvi
 * 3 Equulei
 * 3 Geminorum
 * 3 Juno
 * 3 Monocerotis
 * 3 Persei
 * 3 Piscis Austrini
 * 3 Puppis
 * 3 Serpentis
 * 3 Vulpeculae
 * 3-Hydroxybutanal
 * 3-Hydroxyphenazepam
 * 3.67 m Advanced Electro Optical System Telescope
 * 3.6m Devasthal Optical Telescope
 * 30 Aquarii
 * 30 Arietis
 * 30 Arietis Bb
 * 30 Camelopardalis
 * 30 Cygni
 * 30 Geminorum
 * 30 Herculis
 * 30 Leonis Minoris
 * 30 Monocerotis
 * 30 Ophiuchi
 * 30 Persei
 * 30 Piscium
 * 30 Urania
 * 30 Vulpeculae
 * 300 Geraldina
 * 3000 Leonardo
 * 30000 Camenzind
 * 3001: The Final Odyssey
 * 300P/Catalina
 * 301 Bavaria
 * 3015 Candy
 * 302 Clarissa
 * 3022
 * 303 Josephina
 * 3030 Deathwar
 * 3031 Houston
 * 3034 Climenhaga
 * 3037 Alku
 * 304 Olga
 * 3040 Kozai
 * 3043 San Diego
 * 3045 Alois
 * 3047 Goethe
 * 305 Gordonia
 * 3054 Strugatskia
 * 306 Unitas
 * 3063 Makhaon
 * 3066 McFadden
 * 3067 Akhmatova
 * 307 Nike
 * 3070 Aitken
 * 30705 Idaios
 * 30718 Records
 * 3073 Kursk
 * 3074 Popov
 * 308 Polyxo
 * 309 Fraternitas
 * 30942 Helicaon
 * 3099 Hergenrother
 * 30P/Reinmuth
 * 30th meridian east
 * 30th meridian west
 * 30th parallel north
 * 30th parallel south
 * 31 Aquilae
 * 31 Arietis
 * 31 Boötis
 * 31 Camelopardalis
 * 31 Comae Berenices
 * 31 Crateris
 * 31 Cygni
 * 31 Euphrosyne
 * 31 Leonis
 * 31 Lyncis
 * 31 Nights of Halloween
 * 31 Orionis
 * 31 Pegasi
 * 31 Persei
 * 31 Vulpeculae
 * 310 Margarita
 * 3102 Krok
 * 3103 Eger
 * 311 Claudia
 * 31179 Gongju
 * 31192 Aigoual
 * 311P/PANSTARRS
 * 312 Pierretta
 * 3122 Florence
 * 31249 Renéefleming
 * 313 Chaldaea
 * 3131 Mason-Dixon
 * 3133 Sendai
 * 3137 Horky
 * 314 Rosalia
 * 3141 Buchar
 * 315 Constantia
 * 316 Goberta
 * 31641 Cevasco
 * 3169 Ostro
 * 317 Roxane
 * 3174 Alcock
 * 3176 Paolicchi
 * 318 Magdalena
 * 3181 Ahnert
 * 31824 Elatus
 * 3184 Raab
 * 319 Leona
 * 3192 A'Hearn
 * 3198 Wallonia
 * 3199 Nefertiti
 * 31P/Schwassmann–Wachmann
 * 31st meridian east
 * 31st meridian west
 * 31st parallel north
 * 31st parallel south
 * 32 Andromedae
 * 32 Aquarii
 * 32 Boötis
 * 32 Cygni
 * 32 Ophiuchi
 * 32 Orionis
 * 32 Pegasi
 * 32 Persei
 * 32 Pomona
 * 32 Tauri
 * 32 Vulpeculae
 * 320 Katharina
 * 3200 Phaethon
 * 32008 Adriángalád
 * 3201 Sijthoff
 * 3202 Graff
 * 3204 Lindgren
 * 321 Florentina
 * 3212 Agricola
 * 32145 Katberman
 * 322 Phaeo
 * 32226 Vikulgupta
 * 3225 Hoag
 * 322P/SOHO
 * 323 Brucia
 * 324 Bamberga
 * 3240 Laocoon
 * 3247 Di Martino
 * 325 Heidelberga
 * 32532 Thereus
 * 3254 Bus
 * 3255 Tholen
 * 326 Tamara
 * 3267 Glo
 * 3268 De Sanctis
 * 327 Columbia
 * 3277 Aaronson
 * 328 Gudrun
 * 3281 Maupertuis
 * 3288 Seleucus
 * 329 Svea
 * 3290 Azabu
 * 32P/Comas Solà
 * 32nd meridian east
 * 32nd meridian west
 * 32nd meridian west from Washington
 * 32nd parallel north
 * 32nd parallel south
 * 33 Arietis
 * 33 Boötis
 * 33 Cygni
 * 33 Pegasi
 * 33 Piscium
 * 33 Polyhymnia
 * 33 Vulpeculae
 * 330 Adalberta
 * 3309 Brorfelde
 * 331 Etheridgea
 * 3317 Paris
 * 3318 Blixen
 * 331P/Gibbs
 * 332 Siri
 * 3322 Lidiya
 * 3325 TARDIS
 * 332P/Ikeya–Murakami
 * 333 Badenia
 * 3330 Gantrisch
 * 3333 Schaber
 * 334 Chicago
 * 3343 Nedzel
 * 3345 Tarkovskij
 * 335 Roberta
 * 3350 Scobee
 * 3352 McAuliffe
 * 3353 Jarvis
 * 335P/Gibbs
 * 336 Lacadiera
 * 3360 Syrinx
 * 3361 Orpheus
 * 3362 Khufu
 * 3367 Alex
 * 337 Devosa
 * 338 Budrosa
 * 339 Dorothea
 * 3391 Sinon
 * 33P/Daniel
 * 33rd meridian east
 * 33rd meridian west
 * 33rd parallel north
 * 33rd parallel south
 * 34 Boötis
 * 34 Cancri
 * 34 Circe
 * 34 Pegasi
 * 34 Persei
 * 340 Eduarda
 * 3401 Vanphilos
 * 3402 Wisdom
 * 3406 Omsk
 * 3409 Abramov
 * 341 California
 * 3412 Kafka
 * 341520 Mors–Somnus
 * 342 Endymion
 * 3425 Hurukawa
 * 3428 Roberts
 * 342843 Davidbowie
 * 343 Ostara
 * 3430 Bradfield
 * 34351 Decatur
 * 344 Desiderata
 * 345 Tercidina
 * 3451 Mentor
 * 346 Hermentaria
 * 347 Pariana
 * 348 May
 * 349 Dembowska
 * 3494 Purple Mountain
 * 34D/Gale
 * 34th meridian east
 * 34th meridian west
 * 34th meridian west from Washington
 * 34th parallel north
 * 34th parallel south
 * 35 Aquarii
 * 35 Aquilae
 * 35 Arietis
 * 35 Cancri
 * 35 Comae Berenices
 * 35 Cygni
 * 35 Leukothea
 * 35 Pegasi
 * 35 Piscium
 * 35 Vulpeculae
 * 350 Ornamenta
 * 351 Yrsa
 * 352 Gisela
 * 353 Ruperto-Carola
 * 3537 Jürgen
 * 354 Eleonora
 * 3540 Protesilaos
 * 3544 Borodino
 * 3548 Eurybates
 * 354P/LINEAR
 * 355 Gabriella
 * 3551 Verenia
 * 3552 Don Quixote
 * 3553 Mera
 * 3554 Amun
 * 3556 Lixiaohua
 * 356 Liguria
 * 3563 Canterbury
 * 3564 Talthybius
 * 3567 Alvema
 * 3568 ASCII
 * 357 Ninina
 * 3578 Carestia
 * 358 Apollonia
 * 3581 Alvarez
 * 359 Georgia
 * 3596 Meriones
 * 35P/Herschel–Rigollet
 * 35th meridian east
 * 35th meridian west
 * 35th parallel north
 * 35th parallel south
 * 36 Andromedae
 * 36 Aquilae
 * 36 Arietis
 * 36 Atalante
 * 36 Aurigae
 * 36 Cancri
 * 36 Capricorni
 * 36 Comae Berenices
 * 36 Draconis
 * 36 Lyncis
 * 36 Ophiuchi
 * 36 Persei
 * 36 Serpentis
 * 36 Tauri
 * 36 Ursae Majoris
 * 360 Carlova
 * 361 Bononia
 * 362 Havnia
 * 3628 Božněmcová
 * 363 Padua
 * 3635 Kreutz
 * 364 Isara
 * 3640 Gostin
 * 3642 Frieden
 * 365 Corduba
 * 365 Days of Astronomy
 * 366 Vincentina
 * 3669 Vertinskij
 * 367 Amicitia
 * 3671 Dionysus
 * 3673 Levy
 * 3674 Erbisbühl
 * 367943 Duende
 * 368 Haidea
 * 3682 Welther
 * 3687 Dzus
 * 3688 Navajo
 * 369 Aëria
 * 3691 Bede
 * 36P/Whipple
 * 36th meridian east
 * 36th meridian west
 * 36th parallel north
 * 36th parallel south
 * 37 Aquilae
 * 37 Cancri
 * 37 Comae Berenices
 * 37 Fides
 * 37 Geminorum
 * 37 Leonis Minoris
 * 37 Librae
 * 37 Tauri
 * 370 Modestia
 * 3700 Geowilliams
 * 3703 Volkonskaya
 * 3709 Polypoites
 * 371 Bohemia
 * 3710 Bogoslovskij
 * 3714 Kenrussell
 * 372 Palma
 * 3724 Annenskij
 * 3728 IRAS
 * 373 Melusina
 * 3737 Beckman
 * 374 Burgundia
 * 37432 Piszkéstető
 * 37452 Spirit
 * 3749 Balam
 * 375 Ursula
 * 37519 Amphios
 * 3752 Camillo
 * 3753 Cruithne
 * 3754 Kathleen
 * 3757 Anagolay
 * 376 Geometria
 * 37655 Illapa
 * 377 Campania
 * 3771 Alexejtolstoj
 * 378 Holmia
 * 3782 Celle
 * 3785 Kitami
 * 3787 Aivazovskij
 * 3789 Zhongguo
 * 379 Huenna
 * 3790 Raywilson
 * 3793 Leonteus
 * 3794 Sthenelos
 * 37P/Forbes
 * 37th meridian east
 * 37th meridian west
 * 37th meridian west from Washington
 * 37th parallel north
 * 37th parallel south
 * 38 Aquarii
 * 38 Arietis
 * 38 Aurigae
 * 38 Boötis
 * 38 Cancri
 * 38 Geminorum
 * 38 Leda
 * 38 Leonis Minoris
 * 38 Lyncis
 * 38 Virginis
 * 38 Virginis b
 * 380 Fiducia
 * 3800 Karayusuf
 * 3801 Thrasymedes
 * 38083 Rhadamanthus
 * 381 Myrrha
 * 382 Dodona
 * 3822 Segovia
 * 3823 Yorii
 * 383 Janina
 * 384 Burdigala
 * 3841 Dicicco
 * 3844 Lujiaxi
 * 385 Ilmatar
 * 3850 Peltier
 * 3851 Alhambra
 * 3854 George
 * 385446 Manwë
 * 385571 Otrera
 * 385695 Clete
 * 386 Siegena
 * 38628 Huya
 * 3868 Mendoza
 * 387 Aquitania
 * 3872 Akirafujii
 * 3873 Roddy
 * 388 Charybdis
 * 389 Industria
 * 3893 DeLaeter
 * 38P/Stephan–Oterma
 * 38th meridian east
 * 38th meridian west
 * 38th parallel north
 * 38th parallel south
 * 38th parallel structures
 * 39 Andromedae
 * 39 Aquarii
 * 39 Arietis
 * 39 Aurigae
 * 39 Boötis
 * 39 Cancri
 * 39 Cygni
 * 39 Draconis
 * 39 Eridani
 * 39 Laetitia
 * 39 Leonis
 * 39 Tauri
 * 390 Alma
 * 3905 Doppler
 * 3908 Nyx
 * 391 Ingeborg
 * 3915 Fukushima
 * 3917 Franz Schubert
 * 392 Wilhelmina
 * 393 Lampetia
 * 3936 Elst
 * 39382 Opportunity
 * 394 Arduina
 * 395 Delia
 * 3951 Zichichi
 * 3953 Perth
 * 396 Aeolia
 * 3960 Chaliubieju
 * 3962 Valyaev
 * 3963 Paradzhanov
 * 397 Vienna
 * 39741 Komm
 * 398 Admete
 * 3982 Kastel'
 * 3988 Huma
 * 39890 Bobstephens
 * 399 Persephone
 * 3996 Fugaku
 * 39P/Oterma
 * 39th meridian east
 * 39th meridian west
 * 39th meridian west from Washington
 * 39th parallel north
 * 39th parallel south
 * 3C 109
 * 3C 147
 * 3C 171
 * 3C 191
 * 3C 20
 * 3C 212
 * 3C 215
 * 3C 219
 * 3C 223
 * 3C 234
 * 3C 236
 * 3C 244.1
 * 3C 249.1
 * 3C 268.3
 * 3C 273
 * 3C 279
 * 3C 285
 * 3C 286
 * 3C 288
 * 3C 295
 * 3C 299
 * 3C 303
 * 3C 305
 * 3C 319
 * 3C 321
 * 3C 35
 * 3C 371
 * 3C 390.3
 * 3C 401
 * 3C 433
 * 3C 438
 * 3C 449
 * 3C 452
 * 3C 454.3
 * 3C 47
 * 3C 48
 * 3C 58
 * 3C 61.1
 * 3C 66A
 * 3C 66B
 * 3C 75
 * 3C 79
 * 3C 9
 * 3D city model
 * 3D data acquisition and object reconstruction
 * 3D fold evolution
 * 3D-printed spacecraft
 * 3DF Zephyr
 * 3LAU
 * 3MM-1
 * 3XMM J004232.1+411314
 * 3rd FAI World Rally Flying Championship
 * 3rd Rock from the Sun
 * 3rd meridian east
 * 3rd meridian west
 * 3rd parallel north
 * 3rd parallel south
 * 4 Andromedae
 * 4 Aquarii
 * 4 Aquilae
 * 4 Arietis
 * 4 Camelopardalis
 * 4 Canum Venaticorum
 * 4 Cassiopeiae
 * 4 Centauri
 * 4 Cygni
 * 4 Equulei
 * 4 Lacertae
 * 4 Persei
 * 4 Sagittarii
 * 4 Scorpii
 * 4 Ursae Majoris
 * 4 Ursae Minoris
 * 4 Vesta
 * 4 Vulpeculae
 * 4,722 Hours
 * 4-Nitrophenol
 * 40 Aquarii
 * 40 Arietis
 * 40 Aurigae
 * 40 Boötis
 * 40 Camelopardalis
 * 40 Cancri
 * 40 Eridani
 * 40 Harmonia
 * 40 Leonis
 * 40 Persei
 * 40-foot telescope
 * 400 Ducrosa
 * 400 Years of the Telescope
 * 4000 Hipparchus
 * 4001 Ptolemaeus
 * 4003 Schumann
 * 4007 Euryalos
 * 4008 Corbin
 * 4009 Drobyshevskij
 * 401 Ottilia
 * 4015 Wilson–Harrington
 * 402 Chloë
 * 4022 Nonna
 * 4029 Bridges
 * 403 Cyane
 * 4031 Mueller
 * 4034 Vishnu
 * 404 Arsinoë
 * 4045 Lowengrub
 * 40463 Frankkameny
 * 405 Thia
 * 4055 Magellan
 * 4057 Demophon
 * 406 Erna
 * 4060 Deipylos
 * 4063 Euforbo
 * 4065 Meinel
 * 4068 Menestheus
 * 407 Arachne
 * 408 Fama
 * 4082 Swann
 * 4085 Weir
 * 4086 Podalirius
 * 409 Aspasia
 * 4090 Říšehvězd
 * 40P/Väisälä
 * 40th meridian east
 * 40th meridian west
 * 40th parallel north
 * 40th parallel south
 * 41 Andromedae
 * 41 Aquarii
 * 41 Arietis
 * 41 Aurigae
 * 41 Capricorni
 * 41 Comae Berenices
 * 41 Cygni
 * 41 Daphne
 * 41 G. Arae
 * 41 Leonis Minoris
 * 41 Lyncis
 * 41 Lyncis b
 * 41 Ophiuchi
 * 41 Tauri
 * 41 Ursae Majoris
 * 410 Chloris
 * 411 Xanthe
 * 4118 Sveta
 * 412 Elisabetha
 * 413 Edburga
 * 4138 Kalchas
 * 414 Liriope
 * 4142 Dersu-Uzala
 * 4147 Lennon
 * 4149 Harrison
 * 415 Palatia
 * 4150 Starr
 * 4151 Alanhale
 * 416 Vaticana
 * 417 Suevia
 * 4175 Billbaum
 * 4176 Sudek
 * 4177 Kohman
 * 4179 Toutatis
 * 418 Alemannia
 * 4183 Cuno
 * 4185 Phystech
 * 419 Aurelia
 * 4197 Morpheus
 * 41P/Tuttle–Giacobini–Kresák
 * 41st meridian east
 * 41st meridian west
 * 41st parallel north
 * 41st parallel south
 * 42 (Doctor Who)
 * 42 Aquarii
 * 42 Aquilae
 * 42 Aurigae
 * 42 Camelopardalis
 * 42 Cancri
 * 42 Capricorni
 * 42 Cassiopeiae
 * 42 Draconis
 * 42 Draconis b
 * 42 Herculis
 * 42 Isis
 * 42 Librae
 * 42 Orionis
 * 42 Persei
 * 420 Bertholda
 * 420356 Praamzius
 * 4205 David Hughes
 * 4209 Briggs
 * 421 Zähringia
 * 4217 Engelhardt
 * 422 Berolina
 * 4222 Nancita
 * 423 Diotima
 * 4230 van den Bergh
 * 42355 Typhon
 * 424 Gratia
 * 425 Cornelia
 * 4257 Ubasti
 * 426 Hippo
 * 4263 Abashiri
 * 4265 Kani
 * 427 Galene
 * 4276 Clifford
 * 428 Monachia
 * 4282 Endate
 * 429 Lotis
 * 42P/Neujmin
 * 42nd meridian east
 * 42nd meridian west
 * 42nd parallel north
 * 42nd parallel south
 * 43 Ariadne
 * 43 Aurigae
 * 43 Camelopardalis
 * 43 Persei
 * 43 Sagittarii
 * 430 Hybris
 * 430 Space Shuttle
 * 431 Nephele
 * 4318 Baťa
 * 432 Pythia
 * 4324 Bickel
 * 433 Eros
 * 4332 Milton
 * 434 Hungaria
 * 4340 Dence
 * 4341 Poseidon
 * 4348 Poulydamas
 * 4349 Tibúrcio
 * 435 Ella
 * 4354 Euclides
 * 4358 Lynn
 * 436 Patricia
 * 4362 Carlisle
 * 4364 Shkodrov
 * 437 Rhodia
 * 438 Zeuxo
 * 4383 Suruga
 * 4388 Jürgenstock
 * 439 Ohio
 * 4391 Balodis
 * 43P/Wolf–Harrington
 * 43rd meridian east
 * 43rd meridian west
 * 43rd parallel north
 * 43rd parallel south
 * 44 Andromedae
 * 44 Aquarii
 * 44 Boötis
 * 44 Nysa
 * 44 Ophiuchi
 * 440 Theodora
 * 4401 Aditi
 * 441 Bathilde
 * 442 Eichsfeldia
 * 4429 Chinmoy
 * 443 Photographica
 * 4432 McGraw-Hill
 * 4435 Holt
 * 444 Gyptis
 * 4440 Tchantchès
 * 4446 Carolyn
 * 445 Edna
 * 4450 Pan
 * 4451 Grieve
 * 446 Aeternitas
 * 447 Valentine
 * 448 Natalie
 * 4486 Mithra
 * 449 Hamburga
 * 4492 Debussy
 * 44P/Reinmuth
 * 44th meridian east
 * 44th meridian west
 * 44th parallel north
 * 44th parallel south
 * 45 Andromedae
 * 45 Aquarii
 * 45 Aquilae
 * 45 Aurigae
 * 45 Boötis
 * 45 Cancri
 * 45 Draconis
 * 45 Eridani
 * 45 Eugenia
 * 45 Herculis
 * 45 Ophiuchi
 * 450 Brigitta
 * 4501 Eurypylos
 * 451 Patientia
 * 452 Hamiltonia
 * 4524 Barklajdetolli
 * 4525 Johnbauer
 * 453 Tea
 * 45300 Thewrewk
 * 454 Mathesis
 * 4543 Phoinix
 * 4544 Xanthus
 * 4547 Massachusetts
 * 455 Bruchsalia
 * 456 Abnoba
 * 457 Alleghenia
 * 45737 Benita
 * 458 Hercynia
 * 4581 Asclepius
 * 4585 Ainonai
 * 4587 Rees
 * 459 Signe
 * 45P/Honda–Mrkos–Pajdušáková
 * 45th meridian east
 * 45th meridian west
 * 45th parallel north
 * 45th parallel south
 * 45×90 points
 * 46 Aquilae
 * 46 Boötis
 * 46 Cancri
 * 46 Capricorni
 * 46 Ceti
 * 46 Hestia
 * 46 Leonis Minoris
 * 460 Scania
 * 4606 Saheki
 * 4607 Seilandfarm
 * 4608 Wodehouse
 * 461 Saskia
 * 462 Eriphyla
 * 463 Lola
 * 464 Megaira
 * 4647 Syuji
 * 465 Alekto
 * 4659 Roddenberry
 * 466 Tisiphone
 * 4660 Nereus
 * 46610 Bésixdouze
 * 467 Laura
 * 4672 Takuboku
 * 4674 Pauling
 * 468 Lina
 * 469 Argentina
 * 469219 Kamoʻoalewa
 * 469705 ǂKá̦gára
 * 46P/Wirtanen
 * 46th meridian east
 * 46th meridian west
 * 46th parallel north
 * 46th parallel south
 * 47 Aglaja
 * 47 Andromedae
 * 47 Aquarii
 * 47 Arietis
 * 47 Aurigae
 * 47 Boötis
 * 47 Capricorni
 * 47 Cygni
 * 47 Ophiuchi
 * 47 Tauri
 * 47 Tucanae
 * 47 Ursae Majoris
 * 47 Ursae Majoris b
 * 47 Ursae Majoris c
 * 47 Ursae Majoris d
 * 470 Kilia
 * 4707 Khryses
 * 4708 Polydoros
 * 4709 Ennomos
 * 471 Papagena
 * 471143 Dziewanna
 * 4713 Steel
 * 47171 Lempo
 * 472 Roma
 * 4722 Agelaos
 * 473 Nolli
 * 474 Prudentia
 * 475 Ocllo
 * 4754 Panthoos
 * 4756 Asaramas
 * 476 Hedwig
 * 4760 Jia-xiang
 * 4765 Wasserburg
 * 4769 Castalia
 * 477 Italia
 * 4776 Luyi
 * 478 Tergeste
 * 4786 Tatianina
 * 4789 Sprattia
 * 479 Caprera
 * 4790 Petrpravec
 * 4791 Iphidamas
 * 4792 Lykaon
 * 4797 Ako
 * 47P/Ashbrook–Jackson
 * 47th meridian east
 * 47th meridian west
 * 47th parallel north
 * 47th parallel south
 * 48 Cassiopeiae
 * 48 Doris
 * 48 Hours of Hallucinatory Sex
 * 48 Librae
 * 48 Persei
 * 480 Hansa
 * 4804 Pasteur
 * 4805 Asteropaios
 * 481 Emita
 * 482 Petrina
 * 4822 Karge
 * 4827 Dares
 * 4828 Misenus
 * 483 Seppina
 * 4832 Palinurus
 * 4833 Meges
 * 4834 Thoas
 * 4836 Medon
 * 484 Pittsburghia
 * 485 Genua
 * 486 Cremona
 * 4867 Polites
 * 4868 Knushevia
 * 486958 Arrokoth
 * 487 Venetia
 * 488 Kreusa
 * 489 Comacina
 * 4897 Tomhamilton
 * 4899 Candace
 * 48P/Johnson
 * 48th meridian east
 * 48th meridian west
 * 48th parallel north
 * 48th parallel south
 * 49 Andromedae
 * 49 Aquarii
 * 49 Arietis
 * 49 Aurigae
 * 49 Camelopardalis
 * 49 Cancri
 * 49 Cassiopeiae
 * 49 Ceti
 * 49 Librae
 * 49 Orionis
 * 49 Pales
 * 49 Persei
 * 490 Veritas
 * 4902 Thessandrus
 * 4904 Makio
 * 491 Carina
 * 492 Gismonda
 * 4923 Clarke
 * 493 Griseldis
 * 4936 Butakov
 * 494 Virtus
 * 4942 Munroe
 * 4944 Kozlovskij
 * 4946 Askalaphus
 * 4947 Ninkasi
 * 4949 Akasofu
 * 495 Eulalia
 * 4951 Iwamoto
 * 4954 Eric
 * 4957 Brucemurray
 * 4959 Niinoama
 * 496 Gryphia
 * 4962 Vecherka
 * 497 Iva
 * 49777 Cappi
 * 498 Tokio
 * 499 Venusia
 * 4997 Ksana
 * 49P/Arend–Rigaux
 * 49th meridian east
 * 49th meridian west
 * 49th parallel north
 * 49th parallel south
 * 4C +37.11
 * 4C Array
 * 4Frontiers Corporation
 * 4GLS
 * 4Kings
 * 4P/Faye
 * 4Pi microscope
 * 4U 0142+61
 * 4U 0614+091
 * 4U 1543-475
 * 4U 1700-37
 * 4th meridian east
 * 4th meridian west
 * 4th parallel north
 * 4th parallel south
 * 5 Andromedae
 * 5 Aquarii
 * 5 Aquilae
 * 5 Astraea
 * 5 Aurigae
 * 5 Camelopardalis
 * 5 Cancri
 * 5 Canum Venaticorum
 * 5 Lacertae
 * 5 Persei
 * 5 Serpentis
 * 5 Tauri
 * 5 Ursae Minoris
 * 5 Vulpeculae
 * 5/16 inch star
 * 50 Aquarii
 * 50 Boötis
 * 50 Cancri
 * 50 Cassiopeiae
 * 50 Persei
 * 50 Virginia
 * 500 Selinur
 * 50000 Quaoar
 * 501 Urhixidur
 * 5010 Amenemhêt
 * 5011 Ptah
 * 5012 Eurymedon
 * 502 Sigune
 * 5023 Agapenor
 * 5026 Martes
 * 5027 Androgeos
 * 5028 Halaesus
 * 503 Evelyn
 * 504 Cora
 * 5040 Rabinowitz
 * 5041 Theotes
 * 505 Cava
 * 506 Marion
 * 507 Laodica
 * 50719 Elizabethgriffin
 * 508 Princetonia
 * 5080 Oja
 * 5088 Tancredi
 * 509 Iolanda
 * 50P/Arend
 * 50th meridian east
 * 50th meridian west
 * 50th parallel north
 * 50th parallel south
 * 51 Andromedae
 * 51 Aquarii
 * 51 Aquilae
 * 51 Arietis
 * 51 Aurigae
 * 51 Eridani
 * 51 Eridani b
 * 51 Hydrae
 * 51 Nemausa
 * 51 Ophiuchi
 * 51 Orionis
 * 51 Pegasi
 * 51 Pegasi b
 * 510 Mabella
 * 5101 Akhmerov
 * 511 Davida
 * 512 Taurinensis
 * 5120 Bitias
 * 5126 Achaemenides
 * 513 Centesima
 * 5130 Ilioneus
 * 514 Armida
 * 514107 Kaʻepaokaʻawela
 * 5143 Heracles
 * 5144 Achates
 * 5145 Pholus
 * 5148 Giordano
 * 515 Athalia
 * 516 Amherstia
 * 5160 Camoes
 * 517 Edith
 * 5171 Augustesen
 * 5175 Ables
 * 5176 Yoichi
 * 518 Halawe
 * 51823 Rickhusband
 * 51824 Mikeanderson
 * 51825 Davidbrown
 * 51826 Kalpanachawla
 * 51827 Laurelclark
 * 51828 Ilanramon
 * 51829 Williemccool
 * 5185 Alerossi
 * 519 Sylvania
 * 5196 Bustelli
 * 51983 Hönig
 * 51P/Harrington
 * 51st meridian east
 * 51st meridian west
 * 51st parallel north
 * 51st parallel south
 * 52 Arietis
 * 52 Cygni
 * 52 Europa
 * 52 Herculis
 * 52 Hydrae
 * 52 Persei
 * 52 Sagittarii
 * 520 Franziska
 * 5201 Ferraz-Mello
 * 5208 Royer
 * 521 Brixia
 * 522 Helga
 * 5222 Ioffe
 * 52246 Donaldjohanson
 * 52266 Van Flandern
 * 523 Ada
 * 524 Fidelio
 * 5244 Amphilochos
 * 525 Adelaide
 * 5254 Ulysses
 * 5256 Farquhar
 * 5259 Epeigeus
 * 526 Jena
 * 5261 Eureka
 * 5264 Telephus
 * 527 Euryanthe
 * 528 Rezia
 * 5283 Pyrrhus
 * 5284 Orsilocus
 * 5285 Krethon
 * 52872 Okyrhoe
 * 529 Preziosa
 * 52975 Cyllarus
 * 52P/Harrington–Abell
 * 52nd meridian east
 * 52nd meridian west
 * 52nd parallel north
 * 52nd parallel south
 * 53 Aquarii
 * 53 Arietis
 * 53 Aurigae
 * 53 Camelopardalis
 * 53 Cancri
 * 53 Eridani
 * 53 Kalypso
 * 53 Ophiuchi
 * 53 Persei
 * 53 Piscium
 * 53 Virginis
 * 530 Turandot
 * 531 Zerlina
 * 5316 Filatov
 * 5318 Dientzenhofer
 * 532 Herculina
 * 533 Sara
 * 5331 Erimomisaki
 * 53311 Deucalion
 * 5333 Kanaya
 * 5335 Damocles
 * 534 Nassovia
 * 535 Montague
 * 5357 Sekiguchi
 * 536 Merapi
 * 537 Pauly
 * 5370 Taranis
 * 538 Friederike
 * 5380 Sprigg
 * 5381 Sekhmet
 * 5385 Kamenka
 * 539 Pamina
 * 5391 Emmons
 * 53P/Van Biesbroeck
 * 53rd meridian east
 * 53rd meridian west
 * 53rd parallel north
 * 53rd parallel south
 * 54 Alexandra
 * 54 Arietis
 * 54 Aurigae
 * 54 Cancri
 * 54 Ceti
 * 54 Eridani
 * 54 Leonis
 * 54 Persei
 * 54 Piscium
 * 54 Piscium b
 * 540 Rosamunde
 * 541 Deborah
 * 541132 Leleākūhonua
 * 542 Susanna
 * 5426 Sharp
 * 543 Charlotte
 * 5430 Luu
 * 5436 Eumelos
 * 544 Jetta
 * 545 Messalina
 * 54509 YORP
 * 54598 Bienor
 * 546 Herodias
 * 547 Praxedis
 * 5474 Gingasen
 * 5475 Hanskennedy
 * 5477 Holmes
 * 548 Kressida
 * 5481 Kiuchi
 * 549 Jessonda
 * 54P/de Vico–Swift–NEAT
 * 54th meridian east
 * 54th meridian west
 * 54th parallel north
 * 54th parallel south
 * 55 Andromedae
 * 55 Arietis
 * 55 Cancri
 * 55 Cancri b
 * 55 Cancri c
 * 55 Cancri d
 * 55 Cancri e
 * 55 Cancri f
 * 55 Cygni
 * 55 Pandora
 * 55 Pegasi
 * 55 Persei
 * 55 Ursae Majoris
 * 550 Senta
 * 551 Ortrud
 * 5511 Cloanthus
 * 552 Sigelinde
 * 553 Kundry
 * 5535 Annefrank
 * 554 Peraga
 * 5542 Moffatt
 * 555 Norma
 * 55576 Amycus
 * 556 Phyllis
 * 557 Violetta
 * 55701 Ukalegon
 * 558 Carmen
 * 559 Nanon
 * 5592 Oshima
 * 55P/Tempel–Tuttle
 * 55th meridian east
 * 55th meridian west
 * 55th parallel north
 * 55th parallel south
 * 56 Andromedae
 * 56 Aquarii
 * 56 Aquilae
 * 56 Arietis
 * 56 Ceti
 * 56 Cygni
 * 56 Melete
 * 56 Orionis
 * 56 Pegasi
 * 56 Persei
 * 56 Sagittarii
 * 56 Ursae Majoris
 * 560 Delila
 * 561 Ingwelde
 * 562 Salome
 * 563 Suleika
 * 5635 Cole
 * 5638 Deikoon
 * 564 Dudu
 * 5641 McCleese
 * 5642 Bobbywilliams
 * 565 Marbachia
 * 5652 Amphimachus
 * 5653 Camarillo
 * 5655 Barney
 * 5656 Oldfield
 * 566 Stereoskopia
 * 567 Eleutheria
 * 5677 Aberdonia
 * 568 Cheruskia
 * 5682 Beresford
 * 569 Misa
 * 5692 Shirao
 * 56P/Slaughter–Burnham
 * 56th meridian east
 * 56th meridian west
 * 56th parallel north
 * 56th parallel south
 * 57 Aquilae
 * 57 Cancri
 * 57 Cygni
 * 57 Mnemosyne
 * 57 Persei
 * 570 Kythera
 * 571 Dulcinea
 * 572 Rebekka
 * 573 Recha
 * 5731 Zeus
 * 574 Reginhild
 * 57424 Caelumnoctu
 * 575 Renate
 * 5751 Zao
 * 5756 Wassenbergh
 * 576 Emanuela
 * 577 Rhea
 * 5771 Somerville
 * 578 Happelia
 * 5786 Talos
 * 57868 Pupin
 * 579 Sidonia
 * 57P/du Toit–Neujmin–Delporte
 * 57th meridian east
 * 57th meridian west
 * 57th parallel north
 * 57th parallel south
 * 58 Andromedae
 * 58 Aquarii
 * 58 Aquilae
 * 58 Concordia
 * 58 Eridani
 * 58 Hydrae
 * 58 Leonis
 * 58 Ophiuchi
 * 58 Persei
 * 580 Selene
 * 5806 Archieroy
 * 58097 Alimov
 * 581 Tauntonia
 * 582 Olympia
 * 583 Klotilde
 * 584 Semiramis
 * 585 Bilkis
 * 58534 Logos
 * 5855 Yukitsuna
 * 586 Thekla
 * 587 Hypsipyle
 * 588 Achilles
 * 589 Croatia
 * 5899 Jedicke
 * 58P/Jackson–Neujmin
 * 58th Primetime Emmy Awards
 * 58th meridian east
 * 58th meridian west
 * 58th parallel north
 * 58th parallel south
 * 59 Andromedae
 * 59 Arietis
 * 59 Aurigae
 * 59 Cygni
 * 59 Elpis
 * 59 Leonis
 * 59 Persei
 * 59 Sagittarii
 * 59 Serpentis
 * 59 Virginis
 * 590 Tomyris
 * 5900 Jensen
 * 5905 Johnson
 * 591 Irmgard
 * 592 Bathseba
 * 593 Titania
 * 594 Mireille
 * 595 Polyxena
 * 5951 Alicemonet
 * 596 Scheila
 * 597 Bandusia
 * 598 Octavia
 * 599 Luisa
 * 59P/Kearns–Kwee
 * 59th meridian east
 * 59th meridian west
 * 59th parallel north
 * 59th parallel south
 * 5D/Brorsen
 * 5N65 radar
 * 5th FAI World Rally Flying Championship
 * 5th meridian east
 * 5th meridian west
 * 5th parallel north
 * 5th parallel south
 * 6 Andromedae
 * 6 Aurigae
 * 6 Boötis
 * 6 Canis Minoris
 * 6 Canum Venaticorum
 * 6 Cassiopeiae
 * 6 Ceti
 * 6 Corvi
 * 6 Draconis
 * 6 Equulei
 * 6 Geminorum
 * 6 Hebe
 * 6 Hydrae
 * 6 Lacertae
 * 6 Lyncis
 * 6 Lyncis b
 * 6 Persei
 * 6 Sagittarii
 * 6 Serpentis
 * 6-Hydroxymelatonin
 * 60 Andromedae
 * 60 Aquarii
 * 60 Arietis
 * 60 Aurigae
 * 60 Cancri
 * 60 Echo
 * 60 Herculis
 * 60 Leonis
 * 60 Sagittarii
 * 60 Serpentis
 * 600 Musa
 * 601 Nerthus
 * 602 Marianna
 * 6025 Naotosato
 * 603 Timandra
 * 604 Tekmessa
 * 6042 Cheshirecat
 * 605 Juvisia
 * 60558 Echeclus
 * 606 Brangäne
 * 6063 Jason
 * 607 Jenny
 * 6070 Rheinland
 * 608 Adolfine
 * 6084 Bascom
 * 609 Fulvia
 * 60P/Tsuchinshan
 * 60th meridian east
 * 60th meridian west
 * 60th parallel north
 * 60th parallel south
 * 61 Aquarii
 * 61 Cancri
 * 61 Cygni
 * 61 Danaë
 * 61 Leonis
 * 61 Ursae Majoris
 * 61 Virginis
 * 61 Virginis b
 * 61 Virginis c
 * 61 Virginis d
 * 610 Valeska
 * 6102 Visby
 * 611 Valeria
 * 6117 Brevardastro
 * 612 Veronika
 * 613 Ginevra
 * 614 Pia
 * 6141 Durda
 * 6144 Kondojiro
 * 615 Roswitha
 * 6159 Andréseloy
 * 616 Elly
 * 617 Patroclus
 * 6170 Levasseur
 * 618 Elfriede
 * 6181 Bobweber
 * 6189 Völk
 * 619 Triberga
 * 61P/Shajn–Schaldach
 * 61st meridian east
 * 61st meridian west
 * 61st parallel north
 * 61st parallel south
 * 62 Andromedae
 * 62 Aquilae
 * 62 Arietis
 * 62 Aurigae
 * 62 Erato
 * 62 Sagittarii
 * 620 Drakonia
 * 621 Werdandi
 * 6216 San Jose
 * 622 Esther
 * 6223 Dahl
 * 6229 Tursachan
 * 623 Chimaera
 * 6235 Burney
 * 6239 Minos
 * 624 Hektor
 * 6244 Okamoto
 * 6247 Amanogawa
 * 625 Xenia
 * 6250 Saekohayashi
 * 6255 Kuma
 * 6257 Thorvaldsen
 * 626 Night Market
 * 626 Notburga
 * 6267 Rozhen
 * 627 Charis
 * 628 Christine
 * 629 Bernardina
 * 6296 Cleveland
 * 62P/Tsuchinshan
 * 62nd meridian east
 * 62nd meridian west
 * 62nd parallel north
 * 62nd parallel south
 * 63 Andromedae
 * 63 Aurigae
 * 63 Ausonia
 * 63 Ceti
 * 63 Cygni
 * 63 Ophiuchi
 * 630 Euphemia
 * 631 Philippina
 * 6312 Robheinlein
 * 632 Pyrrha
 * 633 Zelima
 * 63305 Bobkepple
 * 634 Ute
 * 6344 P-L
 * 6349 Acapulco
 * 635 Vundtia
 * 636 Erika
 * 637 Chrysothemis
 * 6376 Schamp
 * 6377 Cagney
 * 638 Moira
 * 639 Latona
 * 6395 Hilliard
 * 6398 Timhunter
 * 63P/Wild
 * 63rd meridian east
 * 63rd meridian west
 * 63rd parallel north
 * 63rd parallel south
 * 64 Andromedae
 * 64 Angelina
 * 64 Aquarii
 * 64 Aquilae
 * 64 Arietis
 * 64 Aurigae
 * 64 Draconis
 * 64 Eridani
 * 64 Piscium
 * 64 Serpentis
 * 640 Brambilla
 * 641 Agnes
 * 642 Clara
 * 643 Scheherezade
 * 6433 Enya
 * 644 Cosima
 * 645 Agrippina
 * 646 Kastalia
 * 6460 Bassano
 * 6469 Armstrong
 * 647 Adelgunde
 * 6470 Aldrin
 * 6478 Gault
 * 648 Pippa
 * 6489 Golevka
 * 649 Josefa
 * 6498 Ko
 * 64P/Swift–Gehrels
 * 64th meridian east
 * 64th meridian west
 * 64th parallel north
 * 64th parallel south
 * 65 Andromedae
 * 65 Arietis
 * 65 Aurigae
 * 65 Cybele
 * 65 Ursae Majoris
 * 650 Amalasuntha
 * 6500 Kodaira
 * 651 Antikleia
 * 652 Jubilatrix
 * 6522 Aci
 * 653 Berenike
 * 6537 Adamovich
 * 654 Zelinda
 * 6546 Kaye
 * 65489 Ceto
 * 655 Briseïs
 * 655th Engineer Topographic Battalion
 * 656 Beagle
 * 657 Gunlöd
 * 658 Asteria
 * 65803 Didymos
 * 659 Nestor
 * 65P/Gunn
 * 65th meridian east
 * 65th meridian west
 * 65th parallel north
 * 65th parallel south
 * 66 Andromedae
 * 66 Aquarii
 * 66 Aquilae
 * 66 Arietis
 * 66 Aurigae
 * 66 Cancri
 * 66 Eridani
 * 66 Maja
 * 66 Ophiuchi
 * 66 Tauri
 * 660 Crescentia
 * 661 Cloelia
 * 6615 Plutarchos
 * 662 Newtonia
 * 663 Gerlinde
 * 66391 Moshup
 * 664 Judith
 * 665 Sabine
 * 666 Desdemona
 * 66652 Borasisi
 * 667 Denise
 * 668 Dora
 * 669 Kypria
 * 66P/du Toit
 * 66th meridian east
 * 66th meridian west
 * 66th parallel north
 * 66th parallel south
 * 67 Aquarii
 * 67 Asia
 * 67 Cancri
 * 67 Ophiuchi
 * 670 Ottegebe
 * 6708 Bobbievaile
 * 6709 Hiromiyuki
 * 671 Carnegia
 * 672 Astarte
 * 6726 Suthers
 * 673 Edda
 * 674 Rachele
 * 675 Ludmilla
 * 676 Melitta
 * 677 Aaltje
 * 678 Fredegundis
 * 679 Pax
 * 6793 Palazzolo
 * 67P/Churyumov–Gerasimenko
 * 67th Academy Awards
 * 67th meridian east
 * 67th meridian west
 * 67th parallel north
 * 67th parallel south
 * 68 Aquarii
 * 68 Aquilae
 * 68 Cygni
 * 68 Draconis
 * 68 Herculis
 * 68 Leto
 * 68 Ophiuchi
 * 680 Genoveva
 * 6805 Abstracta
 * 681 Gorgo
 * 68109 Naomipasachoff
 * 682 Hagar
 * 683 Lanzia
 * 684 Hildburg
 * 685 Hermia
 * 686 Gersuind
 * 687 Tinette
 * 688 Melanie
 * 6882 Sormano
 * 689 Zita
 * 68P/Klemola
 * 68th meridian east
 * 68th meridian west
 * 68th parallel north
 * 68th parallel south
 * 69 Aquilae
 * 69 Ceti
 * 69 Herculis
 * 69 Hesperia
 * 69 Orionis
 * 69 Virginis
 * 690 Wratislavia
 * 691 Lehigh
 * 692 Hippodamia
 * 69230 Hermes
 * 693 Zerbinetta
 * 694 Ekard
 * 695 Bella
 * 696 Leonora
 * 697 Galilea
 * 698 Ernestina
 * 6980 Kyusakamoto
 * 699 Hela
 * 69P/Taylor
 * 69th meridian east
 * 69th meridian west
 * 69th parallel north
 * 69th parallel south
 * 6D (2,0) superconformal field theory
 * 6P/d'Arrest
 * 6Q0B44E
 * 6dF Galaxy Survey
 * 6th meridian east
 * 6th meridian west
 * 6th parallel north
 * 6th parallel south
 * 7 Andromedae
 * 7 Aquarii
 * 7 Aquilae
 * 7 Arietis
 * 7 Boötis
 * 7 Camelopardalis
 * 7 Cancri
 * 7 Cephei
 * 7 Ceti
 * 7 Comae Berenices
 * 7 Draconis
 * 7 Iris
 * 7 Persei
 * 7 Piscium
 * 7 Sagittarii
 * 7 Skies H3
 * 7 Vulpeculae
 * 70 Aquarii
 * 70 Aquilae
 * 70 Cancri
 * 70 Ophiuchi
 * 70 Panopaea
 * 70 Pegasi
 * 70 Virginis
 * 70 Virginis b
 * 700 Auravictrix
 * 701 Oriola
 * 702 Alauda
 * 703 Noëmi
 * 704 Interamnia
 * 705 Erminia
 * 706 Hirundo
 * 7066 Nessus
 * 707 Steina
 * 708 Raphaela
 * 7088 Ishtar
 * 709 Fringilla
 * 7092 Cadmus
 * 70P/Kojima
 * 70th meridian east
 * 70th meridian west
 * 70th parallel north
 * 70th parallel south
 * 71 Aquilae
 * 71 Cygni
 * 71 Niobe
 * 71 Ophiuchi
 * 71 Tauri
 * 710 Gertrud
 * 711 Marmulla
 * 7119 Hiera
 * 712 Boliviana
 * 713 Luscinia
 * 714 Ulula
 * 715 Transvaalia
 * 7152 Euneus
 * 716 Berkeley
 * 7166 Kennedy
 * 7167 Laupheim
 * 717 Wisibada
 * 718 Erida
 * 7187 Isobe
 * 719 Albert
 * 71P/Clark
 * 71st meridian east
 * 71st meridian west
 * 71st parallel north
 * 71st parallel south
 * 72 Cygni
 * 72 Feronia
 * 72 Herculis
 * 72 Leonis
 * 72 Ophiuchi
 * 72 Pegasi
 * 720 Bohlinia
 * 7204 Ondřejov
 * 721 Tabora
 * 722 Frieda
 * 7225 Huntress
 * 723 Hammonia
 * 724 Hapag
 * 725 Amanda
 * 726 Joëlla
 * 727 Nipponia
 * 728 Leonisis
 * 729 Watsonia
 * 72P/Denning–Fujikawa
 * 72nd meridian east
 * 72nd meridian west
 * 72nd parallel north
 * 72nd parallel south
 * 73 Klytia
 * 730 Athanasia
 * 731 Sorga
 * 7317 Cabot
 * 732 Tjilaki
 * 733 Mocia
 * 7336 Saunders
 * 734 Benda
 * 7346 Boulanger
 * 735 Marghanna
 * 736 Harvard
 * 7369 Gavrilin
 * 737 Arequipa
 * 738 Alagasta
 * 7385 Aktsynovia
 * 7387 Malbil
 * 739 Mandeville
 * 73P/Schwassmann–Wachmann
 * 73rd meridian east
 * 73rd meridian west
 * 73rd parallel north
 * 73rd parallel south
 * 74 Aquarii
 * 74 Cygni
 * 74 Galatea
 * 74 Ophiuchi
 * 74 Orionis
 * 74 Virginis
 * 740 Cantabia
 * 741 Botolphia
 * 742 Edisona
 * 743 Eugenisis
 * 744 Aguntina
 * 7440 Závist
 * 7449 Döllen
 * 745 Mauritia
 * 74503 Madola
 * 746 Marlu
 * 747 Winchester
 * 7476 Ogilsbie
 * 748 Simeïsa
 * 749 Malzovia
 * 74P/Smirnova–Chernykh
 * 74th meridian east
 * 74th meridian west
 * 74th parallel north
 * 74th parallel south
 * 75 Cancri
 * 75 Ceti
 * 75 Cygni
 * 75 Eurydike
 * 75 Tauri
 * 750 GeV diphoton excess
 * 750 Oskar
 * 7505 Furusho
 * 751 Faïna
 * 7517 Alisondoane
 * 752 Sulamitis
 * 7526 Ohtsuka
 * 7529 Vagnozzi
 * 753 Tiflis
 * 754 Malabar
 * 7543 Prylis
 * 7545 Smaklösa
 * 7548 Engström
 * 755 Quintilla
 * 7553 Buie
 * 756 Lilliana
 * 757 Portlandia
 * 758 Mancunia
 * 759 Vinifera
 * 75D/Kohoutek
 * 75th meridian east
 * 75th meridian west
 * 75th parallel north
 * 75th parallel south
 * 76 Freia
 * 760 Massinga
 * 7604 Kridsadaporn
 * 761 Brendelia
 * 762 Pulcova
 * 763 Cupido
 * 7638 Gladman
 * 764 Gedania
 * 7648 Tomboles
 * 765 Mattiaca
 * 7655 Adamries
 * 766 Moguntia
 * 767 Bondia
 * 7675 Gorizia
 * 768 Struveana
 * 7687 Matthias
 * 769 Tatjana
 * 76P/West–Kohoutek–Ikemura
 * 76th meridian east
 * 76th meridian west
 * 76th parallel north
 * 76th parallel south
 * 77 Aquarii
 * 77 Ceti
 * 77 Frigga
 * 770 Bali
 * 771 Libera
 * 77185 Cherryh
 * 772 Tanete
 * 773 Irmintraud
 * 774 Armor
 * 7742 Altamira
 * 774–775 carbon-14 spike
 * 775 Lumière
 * 776 Berbericia
 * 777 Gutemberga
 * 777 and Other Qabalistic Writings of Aleister Crowley
 * 7776 Takeishi
 * 778 Theobalda
 * 7784 Watterson
 * 779 Nina
 * 7794 Sanvito
 * 7796 Járacimrman
 * 77P/Longmore
 * 77th meridian east
 * 77th meridian west
 * 77th parallel north
 * 77th parallel south
 * 78 Aquarii
 * 78 Cancri
 * 78 Diana
 * 78 Pegasi
 * 78 Ursae Majoris
 * 78 Virginis
 * 780 Armenia
 * 7803 Adachi
 * 781 Kartvelia
 * 7816 Hanoi
 * 782 Montefiore
 * 783 Nora
 * 7835 Myroncope
 * 784 Pickeringia
 * 78431 Kemble
 * 7846 Setvák
 * 785 Zwetana
 * 786 Bredichina
 * 7866 Sicoli
 * 787 Moskva
 * 788 Hohensteina
 * 78816 Caripito
 * 789 Lena
 * 78P/Gehrels
 * 78th meridian east
 * 78th meridian west
 * 78th parallel north
 * 78th parallel south
 * 79 Cancri
 * 79 Ceti
 * 79 Ceti b
 * 79 Eurynome
 * 790 Pretoria
 * 791 Ani
 * 792 Metcalfia
 * 793 Arizona
 * 79360 Sila–Nunam
 * 794 Irenaea
 * 795 Fini
 * 7958 Leakey
 * 7959 Alysecherri
 * 796 Sarita
 * 7968 Elst–Pizarro
 * 797 Montana
 * 798 Ruth
 * 799 Gudula
 * 79912 Terrell
 * 79P/du Toit–Hartley
 * 79th meridian east
 * 79th meridian west
 * 79th parallel north
 * 79th parallel south
 * 7P/Pons–Winnecke
 * 7th meridian east
 * 7th meridian west
 * 7th parallel north
 * 7th parallel south
 * 8 Andromedae
 * 8 Aquarii
 * 8 Aquilae
 * 8 Camelopardalis
 * 8 Cancri
 * 8 Cygni
 * 8 Draconis
 * 8 Flora
 * 8 Persei
 * 8 Vulpeculae
 * 80 Sappho
 * 800 Kressmannia
 * 801 Helwerthia
 * 8013 Gordonmoore
 * 802 Epyaxa
 * 8026 Johnmckay
 * 803 Picka
 * 8034 Akka
 * 804 Hispania
 * 805 Hormuthia
 * 806 Gyldénia
 * 807 Ceraskia
 * 808 Merxia
 * 809 Lundia
 * 80P/Peters–Hartley
 * 80th meridian east
 * 80th meridian west
 * 80th parallel north
 * 80th parallel south
 * 81 Aquarii
 * 81 Cancri
 * 81 Ceti
 * 81 Ceti b
 * 81 Geminorum
 * 81 Terpsichore
 * 810 Atossa
 * 811 Nauheima
 * 8116 Jeanperrin
 * 812 Adele
 * 8121 Altdorfer
 * 813 Baumeia
 * 814 Tauris
 * 815 Coppelia
 * 816 Juliana
 * 816 Nuclear Military Plant
 * 817 Annika
 * 818 Kapteynia
 * 8187 Akiramisawa
 * 819 Barnardiana
 * 81P/Wild
 * 81st meridian east
 * 81st meridian west
 * 81st parallel north
 * 82 Alkmene
 * 82 Aquarii
 * 82 Cancri
 * 82 G. Eridani
 * 820 Adriana
 * 821 Fanny
 * 822 Lalage
 * 823 Sisigambis
 * 824 Anastasia
 * 825 Tanina
 * 826 Henrika
 * 827 Wolfiana
 * 828 Lindemannia
 * 829 Academia
 * 82P/Gehrels
 * 82nd meridian east
 * 82nd meridian west
 * 82nd parallel north
 * 83 Aquarii
 * 83 Beatrix
 * 83 Cancri
 * 83 Leonis
 * 83 Leonis Bb
 * 83 Ursae Majoris
 * 830 Petropolitana
 * 8306 Shoko
 * 831 Stateira
 * 8318 Averroes
 * 832 Karin
 * 833 Monica
 * 834 Burnhamia
 * 835 Olivia
 * 836 Jole
 * 837 Schwarzschilda
 * 8373 Stephengould
 * 838 Seraphina
 * 839 Valborg
 * 83982 Crantor
 * 83D/Russell
 * 83rd meridian east
 * 83rd meridian west
 * 83rd parallel north
 * 84 Ceti
 * 84 Klio
 * 840 Zenobia
 * 8405 Asbolus
 * 841 Arabella
 * 842 Kerstin
 * 843 Nicolaia
 * 844 Leontina
 * 8441 Lapponica
 * 845 Naëma
 * 846 Lipperta
 * 847 Agnia
 * 848 Inna
 * 84882 Table Mountain
 * 849 Ara
 * 84P/Giclas
 * 84th meridian east
 * 84th meridian west
 * 84th parallel north
 * 85 Ceti
 * 85 Io
 * 85 Pegasi
 * 850 Altona
 * 851 Zeissia
 * 852 Wladilena
 * 853 Nansenia
 * 854 Frostia
 * 8549 Alcide
 * 855 Newcombia
 * 856 Backlunda
 * 857 Glasenappia
 * 858 El Djezaïr
 * 859 Bouzaréah
 * 85D/Boethin
 * 85th meridian east
 * 85th meridian west
 * 86 Aquarii
 * 86 Semele
 * 860 Ursina
 * 861 Aïda
 * 862 Franzia
 * 863 Benkoela
 * 864 Aase
 * 865 Zubaida
 * 866 Fatme
 * 8661 Ratzinger
 * 867 Kovacia
 * 868 Lova
 * 869 Mellena
 * 86P/Wild
 * 86th meridian east
 * 86th meridian west
 * 87 Leonis
 * 87 Sylvia
 * 870 Manto
 * 871 Amneris
 * 872 Holda
 * 873 Mechthild
 * 874 Rotraut
 * 875 Nymphe
 * 876 Scott
 * 877 Walküre
 * 8776 Campestris
 * 878 Mildred
 * 879 Ricarda
 * 87P/Bus
 * 87th meridian east
 * 87th meridian west
 * 88 Aquarii
 * 88 Leonis
 * 88 Tauri
 * 88 Thisbe
 * 880 Herba
 * 881 Athene
 * 8815 Deanregas
 * 882 Swetlana
 * 883 Matterania
 * 884 Priamus
 * 885 Ulrike
 * 886 Washingtonia
 * 88611 Teharonhiawako
 * 887 Alinda
 * 888 Parysatis
 * 889 Erynia
 * 88P/Howell
 * 88th meridian east
 * 88th meridian west
 * 89 Aquarii
 * 89 Herculis
 * 89 Julia
 * 89 Leonis
 * 89 Virginis
 * 890 Waltraut
 * 8900 AAVSO
 * 891 Gunhild
 * 892 Seeligeria
 * 893 Leopoldina
 * 894 Erda
 * 895 Helio
 * 896 Sphinx
 * 8967 Calandra
 * 897 Lysistrata
 * 898 Hildegard
 * 899 Jokaste
 * 8991 Solidarity
 * 8992 Magnanimity
 * 89P/Russell
 * 89th meridian east
 * 89th meridian west
 * 8P/Tuttle
 * 8th meridian east
 * 8th meridian west
 * 8th parallel north
 * 8th parallel south
 * 8½
 * 9 Andromedae
 * 9 Aurigae
 * 9 Boötis
 * 9 Cephei
 * 9 Ceti
 * 9 Cygni
 * 9 Equulei
 * 9 Hydrae
 * 9 Lacertae
 * 9 Metis
 * 9 Pegasi
 * 9 Persei
 * 9 Sagittarii
 * 9 Star Ki
 * 9 Vulpeculae
 * 90 Antiope
 * 90 Minutes Live
 * 90 Tauri
 * 900 Rosalinde
 * 9000 Hal
 * 901 Brunsia
 * 902 Probitas
 * 9023 Mnesthus
 * 903 Nealley
 * 90377 Sedna
 * 904 Rockefellia
 * 90482 Orcus
 * 905 Universitas
 * 906 Repsolda
 * 9069 Hovland
 * 907 Rhoda
 * 908 Buda
 * 9084 Achristou
 * 909 Ulla
 * 90P/Gehrels
 * 90th meridian east
 * 90th meridian west
 * 91 Aegina
 * 91 Aquarii
 * 91 Aquarii b
 * 910 Anneliese
 * 911 Agamemnon
 * 9115 Battisti
 * 912 Maritima
 * 913 Otila
 * 914 Palisana
 * 9142 Rhesus
 * 915 Cosette
 * 916 America
 * 9165 Raup
 * 917 Lyka
 * 9175 Graun
 * 918 Itha
 * 919 Ilsebill
 * 91P/Russell
 * 91st meridian east
 * 91st meridian west
 * 92 Undina
 * 920 Rogeria
 * 921 Jovita
 * 922 Schlutia
 * 9223 Leifandersson
 * 923 Herluga
 * 924 Toni
 * 925 Alphonsina
 * 926 Imhilde
 * 9260 Edwardolson
 * 927 Ratisbona
 * 928 Hildrun
 * 929 Algunde
 * 9298 Geake
 * 92P/Sanguin
 * 92nd meridian east
 * 92nd meridian west
 * 93 Herculis
 * 93 Leonis
 * 93 Minerva
 * 930 Westphalia
 * 931 Whittemora
 * 932 Hooveria
 * 9321 Alexkonopliv
 * 933 Susi
 * 934 Thüringia
 * 9344 Klopstock
 * 935 Clivia
 * 936 Kunigunde
 * 937 Bethgea
 * 938 Chlosinde
 * 939 Isberga
 * 93P/Lovas
 * 93rd meridian east
 * 93rd meridian west
 * 94 Aquarii
 * 94 Aurora
 * 94 Ceti
 * 94 Ceti b
 * 94 Piscium
 * 940 Kordula
 * 941 Murray
 * 942 Romilda
 * 9423 Abt
 * 943 Begonia
 * 944 Hidalgo
 * 945 Barcelona
 * 946 Poësia
 * 947 Monterosa
 * 948 Jucunda
 * 949 Hel
 * 94P/Russell
 * 94th meridian east
 * 94th meridian west
 * 95 Arethusa
 * 950 Ahrensa
 * 951 Gaspra
 * 95179 Berkó
 * 952 Caia
 * 9524 O'Rourke
 * 953 Painleva
 * 954 Li
 * 9549 Akplatonov
 * 955 Alstede
 * 956 Elisa
 * 9564 Jeffwynn
 * 957 Camelia
 * 958 Asplinda
 * 959 Arne
 * 95th meridian east
 * 95th meridian west
 * 96 Aegle
 * 96 Aquarii
 * 960 Birgit
 * 961 Gunnie
 * 9617 Grahamchapman
 * 962 Aslög
 * 963 Iduberga
 * 964 Subamara
 * 9641 Demazière
 * 965 Angelica
 * 966 Muschi
 * 967 Helionape
 * 968 Petunia
 * 969 Leocadia
 * 9694 Lycomedes
 * 96P/Machholz
 * 96th meridian east
 * 96th meridian west
 * 97 Aquarii
 * 97 Klotho
 * 970 Primula
 * 971 Alsatia
 * 9712 Nauplius
 * 972 Cohnia
 * 973 Aralia
 * 974 Lioba
 * 975 Perseverantia
 * 976 Benjamina
 * 9767 Midsomer Norton
 * 977 Philippa
 * 978 Aidamina
 * 979 Ilsewa
 * 97P/Metcalf–Brewington
 * 97th meridian east
 * 97th meridian west
 * 98 Aquarii
 * 98 Herculis
 * 98 Ianthe
 * 980 Anacostia
 * 981 Martina
 * 982 Franklina
 * 9826 Ehrenfreund
 * 983 Gunila
 * 984 Gretia
 * 9844 Otani
 * 985 Rosina
 * 986 Amelia
 * 987 Wallia
 * 988 Appella
 * 989 Schwassmannia
 * 98P/Takamizawa
 * 98th meridian east
 * 98th meridian west
 * 99 Aquarii
 * 99 Dike
 * 99 Herculis
 * 99 Women
 * 990 Yerkes
 * 9902 Kirkpatrick
 * 9903 Leonhardt
 * 9905 Tiziano
 * 9909 Eschenbach
 * 991 McDonalda
 * 9910 Vogelweide
 * 9912 Donizetti
 * 9916 Kibirev
 * 992 Swasey
 * 9921 Rubincam
 * 993 Moultona
 * 9931 Herbhauptman
 * 9936 Al-Biruni
 * 993–994 carbon-14 spike
 * 994 Otthild
 * 9949 Brontosaurus
 * 995 Sternberga
 * 9950 ESA
 * 9951 Tyrannosaurus
 * 996 Hilaritas
 * 9963 Sandage
 * 9965 GNU
 * 9968 Serpe
 * 9969 Braille
 * 997 Priska
 * 9971 Ishihara
 * 998 Bodea
 * 9983 Rickfienberg
 * 999 Zachia
 * 99906 Uofalberta
 * 9991 Anežka
 * 9994 Grotius
 * 99942 Apophis
 * 9999 Wiles
 * 99P/Kowal
 * 99th meridian east
 * 99th meridian west
 * 9Spitch
 * 9th meridian east
 * 9th meridian west
 * 9th parallel north
 * 9th parallel south
 * A Aquarii
 * A Beautiful Friendship (novel)
 * A Beautiful Planet
 * A Blink of the Screen
 * A Book on Nymphs, Sylphs, Pygmies, and Salamanders, and on the Other Spirits
 * A Boy and His Blob
 * A Boy and His Blob: Trouble on Blobolonia
 * A Brief History of Rocketry in ISRO
 * A Brief History of Time
 * A Brief History of Time (film)
 * A Briefer History of Time (Hawking and Mlodinow book)
 * A Bucket of Blood
 * A Cancri
 * A Carinae
 * A Case of Conscience
 * A Celestial Atlas
 * A Centauri
 * A Centauri (disambiguation)
 * A Certain Sacrifice
 * A Christmas Carol
 * A Christmas Carol (2017 play)
 * A Christmas Dream
 * A Cinderella Story
 * A Clone of My Own
 * A Cold Wind in August
 * A Confusion of Princes
 * A Cosmic Christmas
 * A Dangerous Method
 * A Device of Death
 * A Disney Halloween
 * A Dog's Breakfast
 * A Dog, a Mouse, and a Sputnik
 * A Dream (Blake poem)
 * A Dream (DeBarge song)
 * A Dream (short story)
 * A Dream Is a Wish Your Heart Makes
 * A Fall of Moondust
 * A Far Sunset
 * A Farewell to Arms (Futurama)
 * A Field Guide to the Birds of Hawaii and the Tropical Pacific
 * A Fire in the Sky
 * A Flame in Hali
 * A Flight to Remember
 * A Forest Apart
 * A Funny Thing Happened on the Way to the Moon
 * A Gift from Earth
 * A Gift from the Culture
 * A Gift of Dragons
 * A Grand Day Out
 * A Great Day for Freedom
 * A Gun for Jennifer
 * A Guy Called Gerald
 * A Hat Full of Sky
 * A History Channel Thanksgiving
 * A History of the Kerala School of Hindu Astronomy
 * A Hole in Texas
 * A Hydrae
 * A Journal of Insomnia
 * A Journey in Other Worlds
 * A Kiss to Build a Dream On
 * A Klingon Christmas Carol
 * A Man Has Dreams
 * A Man on the Moon
 * A Martian Christmas
 * A Martian Odyssey
 * A Matter of Time (Star Trek: The Next Generation)
 * A Matter of Traces
 * A Message from Mars (1913 film)
 * A Message from Mars (play)
 * A Million Open Doors
 * A Miracle of Science
 * A Modern Utopia
 * A Mother's Confession
 * A Mystery for Mr. Bass
 * A New Machine
 * A Night in the Lonesome October
 * A Night to Dismember
 * A Nightmare on Elm Street
 * A Nightmare on Elm Street (franchise)
 * A Nightmare on Face Time
 * A Pail of Air
 * A Passage to Infinity
 * A Piece of the Action (film)
 * A Pillow of Winds
 * A Planet for Texans
 * A Planet in Arms
 * A Prophetic Romance
 * A Pumpkin Full of Nonsense
 * A Puppis
 * A Question and Answer Guide to Astronomy
 * A Rose for Ecclesiastes
 * A Saucerful of Secrets (instrumental)
 * A Serpentis
 * A Sidewalk Astronomer
 * A Simple Response to an Elemental Message
 * A Sky Full of Ghosts
 * A Spaceman Came Travelling
 * A Spoonful of Sherman
 * A Symphony of Lights
 * A Tale of Two Santas
 * A Tauri
 * A Tenderfoot in Space
 * A Tourist Guide to Lancre
 * A Treatise on the Astrolabe
 * A Trip to Mars
 * A Trip to the Moon
 * A Trip to the Moon (Chronicle)
 * A Trip to the Moon (attraction)
 * A True Story
 * A Universe from Nothing
 * A Velorum
 * A Very Wicked Halloween
 * A Vision
 * A Vision of Judgment
 * A Voyage to Arcturus
 * A Wise Old Owl
 * A Wizard of Mars
 * A Woman of the Iron People
 * A World Out of Time
 * A World of Difference (novel)
 * A Wrinkle in Time
 * A Wrinkle in Time (2003 film)
 * A Wrinkle in Time (2018 film)
 * A come Andromeda
 * A for Andromeda
 * A Árvore dos Sexos
 * A-001
 * A-002
 * A-003
 * A-004
 * A-Haunting We Will Go (1966 film)
 * A-okay
 * A-train (satellite constellation)
 * A-type asteroid
 * A-type main-sequence star
 * A. David Andrews
 * A. David Thackeray
 * A. E. Cogswell
 * A. E. Douglass
 * A. E. Sewell
 * A. Grace Cook
 * A. J. After Hours
 * A. J. Balaban
 * A. J. R. Russell-Wood
 * A. L. Narayan
 * A. Langley Searles
 * A. W. Ecclestone
 * A.G. Huntsman Award for Excellence in the Marine Sciences
 * A.I. Rising
 * A.J. Drexel Plasma Institute
 * A.M. 180
 * A0620-00
 * A1689-zD1
 * A1689B11
 * A1703 zD6
 * A2261-BCG
 * A2744 YD4
 * AA Tauri
 * AAG Gold Medal
 * AANAT (gene)
 * AAPG Bulletin
 * AATSR
 * AAU CubeSat
 * AAUSAT-II
 * AAUSAT3
 * AB Andromedae
 * AB Aurigae
 * AB Doradus
 * AB Doradus moving group
 * AB Pictoris
 * AB magnitude
 * AB7
 * AB8 (star)
 * ABC Warriors
 * ABC's Wide World of Entertainment
 * ABISMO
 * ABJM superconformal field theory
 * ABRIXAS
 * ABS (satellite operator)
 * ABS-3
 * ABS-3A
 * ABS-7
 * AC 00-69
 * AC 20-115
 * AC 20-152
 * AC 25.1309-1
 * AC Andromedae
 * AC Herculis
 * ACARS
 * ACIGA
 * ACRIMSAT
 * ACTS Gigabit Satellite Network
 * ACeS
 * AD Andromedae
 * AD Leonis
 * AD Phoenicis
 * ADAHELI
 * ADCIRC
 * ADEOS I
 * ADEOS II
 * ADL astronomical society
 * ADM formalism
 * ADM-Aeolus
 * ADMS 3
 * ADRON-RM
 * ADS 1359
 * ADS 16402
 * ADS 48
 * ADS 7251
 * ADS 9731
 * ADS Group
 * AE Andromedae
 * AE Aquarii
 * AE Aurigae
 * AE Phoenicis
 * AE Pictoris
 * AE: Apocalypse Earth
 * AEDC Range G
 * AEGIS (astronomy)
 * AERCam Sprint
 * AERMOD
 * AEROS (satellite)
 * AESP-14
 * AFGL 2298
 * AFGL 2591
 * AFM-IR
 * AFP-675
 * AG Carinae
 * AG Draconis
 * AG Pegasi
 * AGC 198691
 * AGILE (satellite)
 * AGSA Lab
 * AGT correspondence
 * AH Scorpii
 * AH Velorum
 * AI Phoenicis
 * AI: The Somnium Files
 * AIDA (mission)
 * AIGO
 * AIMStar
 * AINUR
 * AIPS++
 * AISSat-1
 * AJ10
 * AK Leporis
 * AK Pictoris
 * AK Pyxidis
 * AK Scorpii
 * ALEGRA
 * ALF (TV series)
 * ALF's Hit Talk Show
 * ALF: The Animated Series
 * ALFALFA
 * ALICE (accelerator)
 * ALICE (propellant)
 * ALMASat-1
 * ALOS-2
 * ALSE
 * ALTIUS
 * ALV X-1
 * AM 0644-741
 * AM 1316-241
 * AM Canum Venaticorum
 * AM Canum Venaticorum star
 * AM Herculis
 * AM2R
 * AMADEE-18
 * AMBA (animated film)
 * AMBER (Very Large Telescope)
 * AMC-1
 * AMC-11
 * AMC-14
 * AMC-18
 * AMC-2
 * AMC-21
 * AMC-3
 * AMC-4
 * AMC-5
 * AMC-6
 * AMC-7
 * AMC-8
 * AMC-9
 * AMOS (satellite bus)
 * AMSAT-OSCAR 10
 * AMSAT-OSCAR 16
 * AMSAT-OSCAR 51
 * AMSAT-OSCAR 6
 * AMSAT-OSCAR 7
 * AMiBA
 * AN Ursae Majoris
 * AN/AAQ-37
 * AN/AAR-47 Missile Approach Warning System
 * AN/APG-65 radar family
 * AN/APG-68
 * AN/APG-76
 * AN/APG-77
 * AN/APY-10
 * AN/USQ-20
 * AN/ZPY-1
 * ANAIS
 * ANARESAT
 * ANASIS-II
 * ANDROS
 * ANNA 1B
 * ANSMET
 * ANTARES (telescope)
 * ANUGA Hydro
 * ANUSAT
 * AO Cassiopeiae
 * AO Mensae
 * AP 42 Compilation of Air Pollutant Emission Factors
 * AP Columbae
 * APM 08279+5255
 * AQT-D
 * AQUAL
 * AR Andromedae
 * AR Aurigae
 * AR Cassiopeiae
 * AR Scorpii
 * AR12665
 * ARC Centre of Excellence for All-Sky Astrophysics
 * ARC Squadron
 * ARCADE
 * ARCAspace
 * ARCTIC (ISS Facility)
 * ARGOS (optics system)
 * ARGOS (satellite)
 * ARGOS DSS
 * ARIANNA Experiment
 * ARIEL
 * ARINC
 * ARINC 629
 * ARINC 818
 * ARINC 826
 * ARINC 828
 * ARO 12m Radio Telescope
 * ARP4754
 * ARS (rocket family)
 * ARSAT
 * ARSAT SG-1
 * ARSAT-1
 * ARSAT-2
 * ARSAT-3K
 * ART-XC
 * ARTE (Thermal Exchange)
 * ARTES
 * AS 314
 * AS-101
 * AS-102
 * AS-103
 * AS-104
 * AS-105
 * AS-201
 * AS-202
 * AS-203
 * ASARS-2
 * ASASSN-15lh
 * ASASSN-19bt
 * ASASSN-V J213939.3-702817.4
 * ASASSN1
 * ASAT program of China
 * ASC Purple
 * ASC-15
 * ASCAMP
 * ASCI Blue Pacific
 * ASCI Red
 * ASCI White
 * ASCOM (standard)
 * ASM-135 ASAT
 * ASN Hotel Building
 * ASSET (spacecraft)
 * ASTELCO
 * ASTER (spacecraft)
 * ASTERIA (spacecraft)
 * ASTOS
 * ASTRO (satellite)
 * ASTRON
 * ASUSat
 * AT Microscopii
 * AT2019qiz
 * ATB
 * ATHLETE
 * ATLAS-I
 * ATLO
 * ATP test
 * ATREX
 * ATS-1
 * ATS-2
 * ATS-3
 * ATS-4
 * ATS-6
 * ATSTEP
 * AU Microscopii
 * AURIGA
 * AUSTAL2000
 * AV Microscopii
 * AVCOAT
 * AVH: Alien vs. Hunter
 * AVIATR
 * AW Canum Venaticorum
 * AX Circini
 * AXIS Flight Training Systems
 * AXP 1E 1048-59
 * AXe Spectral Extraction
 * AZ Cancri
 * AZ Canis Minoris
 * AZ Phoenicis
 * Aalto-1
 * Aamon
 * Aang
 * Aarhus (meteorite)
 * Aaron Loves Angela
 * Aaron Parsons
 * Aaron Yazzie
 * Ab urbe condita
 * Abaangui
 * Ababinili
 * Abaddon's Gate
 * Abadox
 * Abalos Colles
 * Abalos Mensa
 * Abalos Undae
 * Aban
 * Abandoned mine drainage
 * Abandonment (mysticism)
 * Abar, the First Black Superman
 * Abaya Lacus
 * Abba Mari ben Eligdor
 * Abbas Wasim Efendi
 * Abbatija Tad-Dejr
 * Abbe (crater)
 * Abbe Lane
 * Abbey Lounge
 * Abbie Hutty
 * Abbot (crater)
 * Abbott and Costello Go to Mars
 * Abby (film)
 * Abd al-Rahman al-Fasi
 * Abd al-Rahman al-Jadiri
 * Abd al-Rahman al-Sufi
 * Abd al‐Wajid
 * Abd as-Salam al-Alami
 * Abduction (1975 film)
 * Abdul Karim (soil scientist)
 * Abdul Rashid (agriculturist)
 * Abdus Salam
 * Abdus Salam Centre for Physics
 * Abe (Oddworld)
 * Abe Saffron
 * Abe Silverstein
 * Abedin (crater)
 * Abee (meteorite)
 * Abeir-Toril
 * Abel (crater)
 * Abel Méndez
 * Abell 1146
 * Abell 1185
 * Abell 12
 * Abell 1201 BCG
 * Abell 13
 * Abell 133
 * Abell 1413
 * Abell 1689
 * Abell 1795
 * Abell 1835
 * Abell 1835 IR1916
 * Abell 1991
 * Abell 2029
 * Abell 2061
 * Abell 2065
 * Abell 2067
 * Abell 2142
 * Abell 2147
 * Abell 2152
 * Abell 2162
 * Abell 2163
 * Abell 2199
 * Abell 2218
 * Abell 222
 * Abell 223
 * Abell 2256
 * Abell 2261
 * Abell 2390
 * Abell 2597
 * Abell 262
 * Abell 2667
 * Abell 2744
 * Abell 2744 Y1
 * Abell 31
 * Abell 3266
 * Abell 33
 * Abell 3411
 * Abell 3412
 * Abell 36
 * Abell 370
 * Abell 3742
 * Abell 383
 * Abell 39
 * Abell 400
 * Abell 478
 * Abell 520
 * Abell 569
 * Abell 576
 * Abell 665
 * Abell 671
 * Abell 7
 * Abell 70
 * Abell 754
 * Abell 78
 * Abell 907
 * Abell Catalog of Planetary Nebulae
 * Abell S1063
 * Abell S1077
 * Abell S740
 * Abell catalogue
 * Abenezra (crater)
 * Abeona Mons
 * Aber Dinlle Fault
 * Aberconway Medal
 * Abercrombie Station
 * Abergavenny fireworks display
 * Aberration (astronomy)
 * Abetti (crater)
 * Abhijit (nakshatra)
 * Abigail Allwood
 * Abiogenesis
 * Abiogenic petroleum origin
 * Abiotic component
 * Abir Al-Tabbaa
 * Abisme (crater)
 * Abiyun al-Bitriq
 * Ablation
 * Ablation zone
 * Ablution in Christianity
 * Abolfadl Harawi
 * Abora (deity)
 * Aboriginal stone arrangement
 * Above & Beyond (band)
 * Above and Below
 * Above and Beyond: The Encyclopedia of Aviation and Space Sciences
 * Abraham H. Taub
 * Abraham Pihl
 * Abraham Robertson
 * Abraham Zacuto
 * Abraham Zelmanov
 * Abraham bar Hiyya
 * Abraham ibn Ezra
 * Abraham's Well
 * Abrahão de Moraes
 * Abrams Planetarium
 * Abrasion (geology)
 * Abraxas, Guardian of the Universe
 * Abrotelia
 * Absolute dating
 * Absolute horizon
 * Absolute magnitude
 * Absolute space and time
 * Absolutely Anything
 * Absolution Gap
 * Absorbance
 * Absorptance
 * Absorption (chemistry)
 * Absorption (electromagnetic radiation)
 * Absorption band
 * Absorption heat pump
 * Absorption of water
 * Absorption spectroscopy
 * Abstract differential geometry
 * Abtew Method
 * Abu 'Ali al-Khayyat
 * Abu Ali al-Hasan al-Marrakushi
 * Abu Hanifa Dinawari
 * Abu Ishaq al-Kubunani
 * Abu Ja'far al-Khazin
 * Abu Ja'far ibn Habash
 * Abu Ma'shar
 * Abu Muhammad al-Hasan al-Hamdani
 * Abu Muqri Mohammed al-Battiwi
 * Abu Nasr Mansur
 * Abu Nuwas (crater)
 * Abu Said Gorgani
 * Abu al-Abbas Iranshahri
 * Abu al-Hasan al-Ahwazi
 * Abu al-Majd ibn Abi al-Hakam
 * Abu al-Salt
 * Abu al-Wafa' Buzjani
 * Abu'l-'Anbas Saymari
 * Abu'l-Hasan Bayhaqi
 * Abu-Mahmud Khojandi
 * Abubakar Kundiri
 * Abul Wafa (crater)
 * Abulfeda
 * Abulfeda (crater)
 * Abundance of elements in Earth's crust
 * Abundance of the chemical elements
 * Abyss (Denning novel)
 * Abyss Box
 * Abū Ishāq Ibrāhīm al-Zarqālī
 * Abū Sahl al-Qūhī
 * Abū al‐ʿUqūl
 * Academia Sinica Institute of Astronomy and Astrophysics
 * Academy (video game)
 * Academy of Climate Change Education and Research
 * Académie de l'air et de l'espace
 * Acanthocereus tetragonus
 * Acanthopleuribacter
 * Acaryochloris marina
 * Accelerando
 * Accelerating expansion of the universe
 * Accelerator Neutrino Neutron Interaction Experiment
 * Acceptable daily intake
 * Accession (Star Trek: Deep Space Nine)
 * Accessory to War
 * Accidental dignity
 * Accidental release source terms
 * Acción mutante
 * Acclimatization
 * Accretion (astrophysics)
 * Accretion (coastal management)
 * Accretion disk
 * Accruva Formation
 * Accumulation zone
 * Ace Combat 04: Shattered Skies
 * Ace Combat Infinity
 * Ace Combat: Assault Horizon
 * Ace Hotel Los Angeles
 * Acebrochol
 * Acecarbromal
 * Acetobacterium carbinolicum
 * Achelous (crater)
 * Achernar
 * Acheron Fossae
 * Achill-henge
 * Achilles Papapetrou
 * Achim Schwenk
 * Achita (crater)
 * Achlys
 * Achmet (oneiromancer)
 * Acholeplasma
 * Achondrite
 * Achromatic telescope
 * Achuguayo
 * Achyutananda
 * Acid neutralizing capacity
 * Acid orange 5
 * Acid rain
 * Acid sulfate soil
 * Acidalia Colles
 * Acidianus
 * Acidianus infernus
 * Acidianus sulfidivorans
 * Acidihalobacter prosperus
 * Acidilobales
 * Acidilobus
 * Acidilobus aceticus
 * Acidilobus saccharovorans
 * Acidimicrobium ferrooxidans
 * Acidipila rosea
 * Acidiplasma
 * Aciditerrimonas ferrireducens
 * Acidithiobacillales
 * Acidithrix ferrooxidans
 * Acidobacteria
 * Acidobacterium capsulatum
 * Acidophile
 * Acidophiles in acid mine drainage
 * Aciduliprofundum
 * Aciduliprofundum boonei
 * Ackerly meteorite
 * Acme zone
 * Acosta (crater)
 * Acoustic levitation
 * Acoustic metric
 * Acoustic paramagnetic resonance
 * Acoustic release
 * Acoustic resonance spectroscopy
 * Acoustic seabed classification
 * Acoustical oceanography
 * Acoustically Navigated Geological Underwater Survey
 * Acousto-optical spectrometer
 * Acousto-optics
 * Acqua alta
 * Acquainted with the Night (book)
 * Acraman crater
 * Acrion
 * Acrisol
 * Acrodynia
 * Acronical place
 * Acronyms and abbreviations in avionics
 * Across 110th Street
 * Across a Billion Years
 * Across the Sea of Suns
 * Across the Universe (message)
 * Across the Zodiac
 * Acrotelm
 * Acrux
 * Act of God (film)
 * Act of Vengeance (1974 film)
 * Acta Agriculturae Scandinavica B
 * Acta Astronautica
 * Acta Astronomica
 * Acta Geographica Slovenica
 * Acta Geologica Polonica
 * Actaea (moon)
 * Actigraphy
 * Actinometer
 * Actinopolyspora xinjiangensis
 * Actinorhizal plant
 * Action Jackson (1988 film)
 * Action Quake 2
 * Action for Climate Empowerment
 * Action spectrum
 * Activated charcoal (medication)
 * Activation-synthesis hypothesis
 * Active SETI
 * Active asteroid
 * Active cavity radiometer
 * Active galactic nucleus
 * Active layer
 * Active optics
 * Active surface
 * Actun Tunichil Muknal
 * Acute Exposure Guideline Levels
 * Acute inhalation injury
 * Acute to chronic ratio
 * Acute toxicity
 * Ad Astra (film)
 * Ad Astra (magazine)
 * Ad Astra Rocket Company
 * AdS black hole
 * AdS/CFT correspondence
 * AdS/CMT correspondence
 * AdS/QCD correspondence
 * Ada Leonard
 * Adaheli
 * Adakite
 * Adalard of Corbie
 * Adalbert Krueger
 * Adam & Eve, Birmingham
 * Adam A500
 * Adam Becker
 * Adam Frank
 * Adam Freeland
 * Adam Hollanek
 * Adam Johann von Krusenstern
 * Adam Prazmowski
 * Adam Riess
 * Adam Roberts (British writer)
 * Adam S. T. Thomson
 * Adam Savage
 * Adam Steltzner
 * Adam Strange
 * Adam Woodyatt
 * Adam and Eve
 * Adamastor Ocean
 * Adams (Martian crater)
 * Adams (lunar crater)
 * Adams–Williamson equation
 * Adapter (rocketry)
 * Adaptive optics
 * Addams (crater)
 * Adderall
 * Addison Bain
 * Address: Centauri
 * Addressed fiber Bragg structure
 * Adekagagwaa
 * Adela Ringuelet
 * Adelard of Bath
 * Adeleorina
 * Adelie Land meteorite
 * Adelina Gutiérrez
 * Adeline (rocket stage)
 * Ademar José Gevaerd
 * Aden Meinel
 * Adeona family
 * Adhi Kot (meteorite)
 * Adhi yoga
 * Adhik Maas
 * Adhil
 * Adiabatic invariant
 * Adinazolam
 * Adinkra symbols (physics)
 * Adiri (Titan)
 * Adirondack (Mars)
 * Adirondack Mountains
 * Adithyapuram Sun Temple
 * Aditi Pant
 * Aditya-L1
 * Adivar (crater)
 * Adiós Amigo
 * Adjustable bed
 * Adler Planetarium
 * Adlinda (crater)
 * Admiral (train)
 * Admiralty chart
 * Adolescent sleep
 * Adolf Berberich
 * Adolf Grünbaum
 * Adolf Overweg
 * Adolf Thiel
 * Adolfo Figueroa-Viñas
 * Adolph Friedrich Lindemann
 * Adolph Gottfried Kinau
 * Adolphe Hirsch
 * Adolphe Quetelet
 * Adolphe Rome
 * Adonis
 * Adoudounian
 * Adrastea (moon)
 * Adrenaline (film)
 * Adriaan Blaauw
 * Adriaan Wesselink
 * Adriaan van Maanen
 * Adrian Berry, 4th Viscount Camrose
 * Adrian Luckman
 * Adrian Melott
 * Adrian Ponce
 * Adrian R. Morrison
 * Adrian Rodriguez (DJ)
 * Adriana Ocampo
 * Adrianne Curry
 * Adrift (video game)
 * Adrián Galád
 * Adsorbable organic halides
 * Adsorption
 * Adsorption/Bio-oxidation process
 * Adult Swim (Canadian TV network)
 * Adult movie theater
 * Advanced Aerospace Threat Identification Program
 * Advanced Airborne Sensor
 * Advanced Avionics Module
 * Advanced CCD Imaging Spectrometer
 * Advanced Composition Explorer
 * Advanced Concepts Team
 * Advanced Cryogenic Evolved Stage
 * Advanced Electric Propulsion System
 * Advanced Extremely High Frequency
 * Advanced Gemini
 * Advanced LIGO Documentary Project
 * Advanced Land Observation Satellite
 * Advanced Launch System
 * Advanced Photon Source
 * Advanced Photovoltaic & Electronic Experiment
 * Advanced Propulsion Physics Laboratory
 * Advanced Research and Conventional Technology Utilization Spacecraft
 * Advanced Rocket Research Center
 * Advanced Satellite for Cosmology and Astrophysics
 * Advanced Scientific Data Format
 * Advanced Space Propulsion Investigation Committee
 * Advanced Space Vision System
 * Advanced Spaceborne Thermal Emission and Reflection Radiometer
 * Advanced Stirling radioisotope generator
 * Advanced Tactical Airborne Reconnaissance System
 * Advanced Technology Vehicle
 * Advanced Telescope for High Energy Astrophysics
 * Advanced Thin Ionization Calorimeter
 * Advanced fire information system
 * Advanced microwave sounding unit
 * Advanced oxidation process
 * Advanced sleep phase disorder
 * Advanced very-high-resolution radiometer
 * Advances in Atmospheric Sciences
 * Advances in Space Research
 * Advection
 * Advent Rising
 * Advent Shadow
 * Adventure Rupes
 * Adventure Science Center
 * Adventure Thru Inner Space
 * Adventure Time (short film)
 * Adverse outcome pathway
 * Advisory circular
 * Adzhi-Bogdo
 * Aegaeon (moon)
 * Aegir (moon)
 * Aelita
 * Aelita (novel)
 * Aeolian processes
 * Aeolis Mensae
 * Aeolis Palus
 * Aepinus (crater)
 * Aequorivita crocea
 * Aerenchyma
 * Aerial Common Sensor
 * Aerial Phenomena Research Organization
 * Aerial Regional-scale Environmental Survey
 * Aerial base station
 * Aerial photographic and satellite image interpretation
 * Aerial telescope
 * Aerial video
 * Aerials (film)
 * Aero Spacelines Pregnant Guppy
 * Aero Spacelines Super Guppy
 * AeroCube 3
 * Aerobee
 * Aerobic denitrification
 * Aerobic granulation
 * Aerobraking
 * Aerocapture
 * Aerodynamic heating
 * Aerodynamic levitation
 * Aerogravity assist
 * Aerojet General X-8
 * Aerometer
 * Aeronautical Telecommunication Network
 * Aeronautical and Space Medicine Unit
 * Aeronautics Research Mission Directorate
 * Aeronomy
 * Aeronomy of Ice in the Mesosphere
 * Aeropause
 * Aeroponics
 * Aeropyrum
 * Aeropyrum pernix
 * Aeroshell
 * Aerospace Force of the Islamic Revolutionary Guard Corps
 * Aerospace Logistics Technology Engineering Company
 * Aerospace Medical Association
 * Aerospace Research Institute
 * Aerospace manufacturer
 * Aerospaceplane
 * Aerotech Consumer Aerospace
 * Aesara
 * Aestivation
 * Aestivation hypothesis
 * Aestuariibacter halophilus
 * Aestus
 * Aether (classical element)
 * Aether (video game)
 * Aethiopian Sea
 * Affine gauge theory
 * Affine vector field
 * Affleck–Dine mechanism
 * Affliction (1997 film)
 * Affusion
 * Afghanistan
 * Afghansat 1
 * Afocal photography
 * AfriStar
 * Africa Addio
 * African Geographical Review
 * African Journal of Marine Science
 * African Skies (journal)
 * African trypanosomiasis
 * Africanism All Stars
 * Africanus Horton (crater)
 * Afro-Eurasia
 * Afrotropical realm
 * Afroz Ahmad
 * Aft-crossing trajectory
 * After Earth
 * After School Massacre
 * After Worlds Collide
 * After the Deluge (painting)
 * After the Disco (song)
 * After the Gold Rush (song)
 * Afterhours club
 * Afterimage (Star Trek: Deep Space Nine)
 * Aftermath (Muse song)
 * Agada
 * Against a Dark Background
 * Against a Dwarf
 * Against the Law (1997 film)
 * Aganippe Fossa
 * Agassiz (crater)
 * Agate (rocket)
 * Agatharchides (crater)
 * Agave amica
 * Age (geology)
 * Age of Aquarius
 * Age of Ascent
 * Age of Earth
 * Age of Wonders: Planetfall
 * Age of the Gods
 * Age of the universe
 * AgeHa
 * Agen (meteorite)
 * Agena target vehicle
 * Agencia Espacial Mexicana
 * Agent Steel
 * Agent of Vega
 * Agents of S.H.I.E.L.D.
 * Agents of S.H.I.E.L.D. series finale
 * Ageostrophy
 * Aggañña Sutta
 * Agglomerate
 * Aggradation
 * Aggregat (rocket family)
 * Aggregate (geology)
 * Aggregatibacter actinomycetemcomitans
 * Aggregation-induced emission
 * Agila-1
 * Aglaonice
 * Aglibol
 * Agnes Giberne
 * Agnes Mary Clerke
 * Agnesi (crater)
 * Agni
 * Agni-V
 * Agni-VI
 * AgniKul Cosmos
 * Agnieszka Fryckowska
 * Agniswarar Temple, Kanjanur
 * Agnès Acker
 * Agnès Fienga
 * Agostino Giuntoli
 * Agostino Maccari
 * Agrahayana
 * Agrat bat Mahlat
 * Agreement Concerning Cooperation in the Exploration and Use of Outer Space for Peaceful Purposes
 * Agreement on the Conservation of Populations of European Bats
 * Agricultural Conservation Program
 * Agricultural and Forest Meteorology
 * Agricultural astrology
 * Agricultural pollution
 * Agricultural soil science
 * Agricultural wastewater treatment
 * Agriculture, Ecosystems & Environment
 * Agrippa (crater)
 * Agrivoltaic
 * Agrochemical
 * Agroecology
 * Agrogeology
 * Agrology
 * Agrominerals
 * Agudar
 * Ah Peku Patera
 * Ahmad (crater)
 * Ahmad Baba (crater)
 * Ahmad Nahavandi
 * Ahmad ibn Yusuf
 * Ahmed Abukhater
 * Ahmed Farid
 * Ahmed Romel
 * Ahmed Zewail
 * Ahuna Mons
 * Aichelburg–Sexl ultraboost
 * Aiden Ford
 * Aigarchaeota
 * Aigle (rocket)
 * Aiken-Augusta Special
 * Aikhulu Chasma
 * Ailey (crater)
 * Ailill Aulom
 * Aimend
 * Aimé Michel
 * Aina Elvius
 * Aintab plateau
 * Ainu creation myth
 * Air (classical element)
 * Air Force Maui Optical and Supercomputing observatory
 * Air Force Space Command
 * Air Force Space and Missile Museum
 * Air Power Park
 * Air Quality Modeling Group
 * Air compressor
 * Air data computer
 * Air data inertial reference unit
 * Air data module
 * Air mass (astronomy)
 * Air mass (solar energy)
 * Air mattress
 * Air pollution episode
 * Air quality index
 * Air raid shelter
 * Air shower (physics)
 * Air traffic control radar beacon system
 * Air well (condenser)
 * Air-ground radiotelephone service
 * Air-launch-to-orbit
 * Air-wedge shearing interferometer
 * AirLaunch
 * AirNav Systems
 * AirStrato
 * Airbomb
 * Airborne Internet
 * Airborne Launch Assist Space Access
 * Airborne Maintenance & Engineering Services
 * Airborne Precision Spacing
 * Airborne Real-time Cueing Hyperspectral Enhanced Reconnaissance
 * Airborne collision avoidance system
 * Airborne observatory
 * Airborne visible/infrared imaging spectrometer
 * Airborne wind shear detection and alert system
 * Airbus Defence and Space
 * Airbus Defence and Space Spaceplane
 * Airbus Military
 * Aircraft Operations Center
 * Aircraft station
 * Airdrie Public Observatory
 * Airfone
 * Airforce Delta Strike
 * Airglow
 * Airlock
 * Airplane II: The Sequel
 * Airplane Information Management System
 * Airplane mode
 * Airship
 * Airsprung
 * Airy (Martian crater)
 * Airy (lunar crater)
 * Airy disk
 * Airy-0
 * Aist 1
 * Aitken (crater)
 * Aitken Double Star Catalogue
 * Aitne (moon)
 * Aiśvarya
 * Ajanbahu (term)
 * Ajaw
 * Ajit Kembhavi
 * Ak-Sar-Ben Zephyr
 * Akaa Solar System Scale Model
 * Akadama
 * Akakor
 * Akari (satellite)
 * Akash Mitra Mandal
 * Akasha
 * Akatsuki (spacecraft)
 * Akatsuki (train)
 * Akbarpur (meteorite)
 * Akebono (satellite)
 * Akebono (train)
 * Akeno Giant Air Shower Array
 * Akeno Observatory
 * Akhanda Samrajya yoga
 * Akihiko Hoshide
 * Akihiko Tago
 * Akiira Geothermal Limited
 * Akimasa Nakamura
 * Akimotoite
 * Akino Arai
 * Akino Memorial Research
 * Akitsune Imamura
 * Akna Montes
 * Akon Lighting Africa
 * Aksakov (crater)
 * Akutagawa (crater)
 * Akycha
 * Al Achsasi al Mouakket
 * Al B. Rich
 * Al Calavicci
 * Al Farabi-1
 * Al Howard
 * Al Thalimain
 * Al Yah Satellite Communications
 * Al-Adami
 * Al-Akhtal (crater)
 * Al-Ashraf Umar II
 * Al-Badi' al-Asturlabi
 * Al-Bakbuk
 * Al-Bakri (crater)
 * Al-Battani
 * Al-Birjandi
 * Al-Biruni
 * Al-Biruni (crater)
 * Al-Dhira'
 * Al-Fadl ibn Naubakht
 * Al-Fakik
 * Al-Farghani
 * Al-Haddar
 * Al-Hakim al-Munajjim
 * Al-Hamadhani (crater)
 * Al-Isfizari
 * Al-Jāhiz (crater)
 * Al-Kharaqī
 * Al-Khawarizmi Astronomy Complex
 * Al-Khazini
 * Al-Khwarizmi (crater)
 * Al-Kindi
 * Al-Kutbay
 * Al-Kuz
 * Al-Mahani
 * Al-Marrakushi (crater)
 * Al-Mustazi
 * Al-Nayrizi
 * Al-Qabisi
 * Al-Qaum
 * Al-Saghani
 * Al-Samawal al-Maghribi
 * Al-Sijzi
 * Al-Ta'ir (satellite)
 * Al-Wabkanawi
 * Al-Ḥajjāj ibn Yūsuf ibn Maṭar
 * Al. Ringling Theatre
 * AlSAT-1
 * Ala Macula
 * Aladdin (crater)
 * Aladin Sky Atlas
 * Aladino Félix
 * Alain Gachet
 * Alain Le Bussy
 * Alain Manesson Mallet
 * Alain Maury
 * Alais meteorite
 * Alam al-Din al-Hanafi
 * Alameda Theatre (Alameda, California)
 * Alan Aldridge
 * Alan Andrew Watson
 * Alan Bean
 * Alan Bond (engineer)
 * Alan Boss
 * Alan C. Gilmore
 * Alan Dressler
 * Alan Duffy (astronomer)
 * Alan Eustace
 * Alan G. Poindexter
 * Alan Godfrey
 * Alan Guth
 * Alan Gutierrez
 * Alan Hale (astronomer)
 * Alan Leo
 * Alan Lindenmoyer
 * Alan M. Clark
 * Alan N. Shapiro
 * Alan Priddy
 * Alan R. Hildebrand
 * Alan Riding
 * Alan Shepard
 * Alan Soper
 * Alan Stern
 * Alan Tracy
 * Alan William James Cousins
 * Alan's Psychedelic Breakfast
 * Alar Toomre
 * Alarm clock
 * Alaska Satellite Facility
 * Alaska Volcano Observatory
 * Alastair G. W. Cameron
 * Alastor Cluster
 * Alazan (rocket)
 * Alba Mons
 * Alba Orbital
 * Albano Lacus
 * Albany Progress
 * Albareto (meteorite)
 * Albategnius (crater)
 * Albatross (Star Trek: The Animated Series)
 * Albatross expedition
 * Albedo
 * Albedo feature
 * Albeluvisols
 * Albergo diurno Venezia
 * Albert (crater)
 * Albert Bijaoui
 * Albert Brudzewski
 * Albert Curtz
 * Albert Einstein
 * Albert Einstein ATV
 * Albert F. A. L. Jones
 * Albert Falsan
 * Albert George Wilson
 * Albert Graham Ingalls
 * Albert H. Crews
 * Albert Hibbs
 * Albert I, Prince of Monaco
 * Albert K. Bender
 * Albert Lancaster
 * Albert Le Sueur
 * Albert Marth
 * Albert Pighius
 * Albert Pyun
 * Albert Sacco
 * Albert Scott Crossfield
 * Albert Whitford
 * Albert William Recht
 * Alberto Conti
 * Alberto Pappiani
 * Alberto Vecchio
 * Albertus Antonie Nijland
 * Albin (meteorite)
 * Albina (mythology)
 * Albion (video game)
 * Albion Hotel, Balmain
 * Albiorix (moon)
 * Albireo
 * Albor Tholus
 * Alborz
 * Albrecht Unsöld
 * Albrecht-Penck-Medaille
 * Albtrauf
 * Albubather
 * Albulaan
 * Alcatel-Lucent
 * Alcazar (Paris)
 * Alcazar d'Été
 * Alcmaeon of Croton
 * Alcohol (drug)
 * Alcohol and spaceflight
 * Alcohol use and sleep
 * Alcohol-free zone
 * Alcohol-related brain damage
 * Alcolapia alcalica
 * Alcomsat-1
 * Alcor (star)
 * Alcott (crater)
 * Alcove (landform)
 * Alcubierre drive
 * Alcuin
 * Alcyone (star)
 * Alcântara Cyclone Space
 * Alcântara Launch Center
 * Aldan (river)
 * Aldebaran
 * Aldebaran (comics)
 * Aldebaran (rocket)
 * Aldebaran b
 * Aldebaran in fiction
 * Alden (crater)
 * Alder (crater)
 * Alder carr
 * Alderaan
 * Aldnoah.Zero
 * Aldo Di Clemente
 * Aldric Saucier
 * Aldrin (crater)
 * Aldynes
 * Alec Rose
 * Alejandra Melfo
 * Alejandra Ávalos
 * Alejandro Corichi
 * Alejandro Malaspina
 * Alejandro Suárez Lozano
 * Alek Sandar
 * Alekhin (crater)
 * Aleksander Jabłoński
 * Aleksander Kosiba
 * Aleksander Wolszczan
 * Aleksandr Aleksandrovich Mikhailov
 * Aleksandr Aleksandrovich Volkov
 * Aleksandr Chudakov
 * Aleksandr Dralkin
 * Aleksandr Iosifovich Popov
 * Aleksandr Ivanchenkov
 * Aleksandr Kaleri
 * Aleksandr Laveykin
 * Aleksandr Lazutkin
 * Aleksandr Nikolayevich Balandin
 * Aleksandr Pavlovich Aleksandrov
 * Aleksandr Poleshchuk
 * Aleksandr Samokutyayev
 * Aleksandr Serebrov
 * Aleksandr Sergeevič Višnevskij
 * Aleksandr Skvortsov (cosmonaut)
 * Aleksandr Yakovlevich Orlov
 * Aleksandr Zheleznyakov
 * Aleksei Gubarev
 * Aleksei Isaev
 * Aleksei Yeliseyev
 * Aleksey Pavlovitch Hansky
 * Alencar (crater)
 * Alenush Terian
 * Aleppo plateau
 * Aleriel, or A Voyage to Other Worlds
 * Alert, Nunavut
 * Alessandro Morbidelli (astronomer)
 * Alessandro Piccolomini
 * Alessandro Serpieri
 * Aleurite
 * Alex Chambers
 * Alex Ebel
 * Alex Filippenko
 * Alex Garland
 * Alex Jones
 * Alex Karbouris
 * Alex Kidd in the Enchanted Castle
 * Alex M.O.R.P.H.
 * Alex McCool
 * Alex Proyas
 * Alex Schomburg
 * Alex Shvartsman
 * Alex Szalay
 * Alexander (crater)
 * Alexander (satellite)
 * Alexander A. Clerk
 * Alexander A. Gurshtein
 * Alexander Adie
 * Alexander Agassiz Medal
 * Alexander Bolonkin
 * Alexander Carmichael Bruce
 * Alexander Dalgarno
 * Alexander Dallas Bache
 * Alexander Dubyago
 * Alexander Edgar Douglas
 * Alexander Eugen Conrady
 * Alexander F. I. Forbes
 * Alexander Friedmann
 * Alexander George McAdie
 * Alexander Gerst
 * Alexander J. Dessler
 * Alexander Karpinsky
 * Alexander Kashlinsky
 * Alexander Kazantsev
 * Alexander Keith Johnston (1844–1879)
 * Alexander Leydenfrost
 * Alexander MacFarlane (judge)
 * Alexander Macfarlane
 * Alexander Nikolaevich Deutsch
 * Alexander Ollongren
 * Alexander Prokhorov
 * Alexander Pushkin (diamond)
 * Alexander Salomonovich
 * Alexander Selkirk
 * Alexander Stewart Herschel
 * Alexander Strange
 * Alexander Thom
 * Alexander Tielens
 * Alexander V. Zakharov
 * Alexander Vilenkin
 * Alexander Vyssotsky
 * Alexander Wetmore
 * Alexander William Roberts
 * Alexander Zaitsev (astronomer)
 * Alexander and Nicole Gratovsky
 * Alexander von Humboldt Medal (EGU)
 * Alexandre Schaumasse
 * Alexandru Mironov
 * Alexei Fridman
 * Alexei Leonov
 * Alexei Panshin
 * Alexei Starobinsky
 * Alexey Stakhov
 * Alexey Tryoshnikov
 * Alexey Vikhlinin
 * Alexicrates
 * Alexis A. Gilliland
 * Alexis Bouvard
 * Alexis Brandeker
 * Alexis Caswell
 * Alexius Sylvius Polonus
 * Alfa (rocket)
 * Alfa Planetarium
 * Alfisol
 * Alfonsine tables
 * Alfonso Cuarón
 * Alfonso X of Castile
 * Alfraganus (crater)
 * Alfred Bohrmann
 * Alfred Broughton
 * Alfred C. Redfield
 * Alfred Eisenack
 * Alfred Evans (cricketer, born 1858)
 * Alfred Gordon Gaydon
 * Alfred Harrison Joy
 * Alfred J. Eggers
 * Alfred J. Lewy
 * Alfred Kastler
 * Alfred Maddock
 * Alfred McEwen
 * Alfred Merz
 * Alfred Milner, 1st Viscount Milner
 * Alfred Robb
 * Alfred Russel Wallace centenary
 * Alfred Schild
 * Alfred Schmitt
 * Alfred Wegener Institute for Polar and Marine Research
 * Alfred Weld
 * Alfred Worden
 * Alfred van der Poorten
 * Alfredo Fiorito
 * Alfvén resonator
 * Alfvén wave
 * Algae scrubber
 * Algatron
 * Algerian Space Agency
 * Algis Budrys
 * Algol
 * Algol (film)
 * Algol paradox
 * Algol variable
 * Algoman orogeny
 * Algonquin 46m radio telescope
 * Algonquin Radio Observatory
 * Alhambra Cinema (Israel)
 * Alhazen (crater)
 * Alhazen's problem
 * Ali A.F. Al-Furaih
 * Ali Abdelghany
 * Ali Baba (crater)
 * Ali Moustafa Mosharafa
 * Ali Qushji
 * Ali ibn Isa al-Asturlabi
 * Ali ibn Khalaf
 * Ali ibn Ridwan
 * Ali ibn Sulayman al-Hashimi
 * Aliacensis (crater)
 * Alicante 7
 * Alicante 8
 * Alice (spacecraft instrument)
 * Alice Archenhold
 * Alice Bowman
 * Alice Everett
 * Alice Harding
 * Alice Johnson (A Nightmare on Elm Street)
 * Alice King Chatham
 * Alice Larkin
 * Alice Liddell
 * Alice Prin
 * Alice Tully Hall
 * Alice in Murderland (film)
 * Alice in Wonderland (1951 film)
 * Alice in Wonderland dress
 * Alice's Adventures in Wonderland
 * Alice's Birthday
 * Alice's Shop
 * Alice, Sweet Alice
 * Alicia Austin
 * Alicia M. Soderberg
 * Alicia Puleo
 * Alicyclobacillus acidiphilus
 * Alidade
 * Alien (1984 video game)
 * Alien (Atari 2600)
 * Alien (Avalon Hill)
 * Alien (Britney Spears song)
 * Alien (creature in Alien franchise)
 * Alien (film)
 * Alien (sculpture)
 * Alien 2: On Earth
 * Alien 3
 * Alien 3 (video game)
 * Alien 3: The Gun
 * Alien Autopsy (film)
 * Alien Carnage
 * Alien Encounters (TV series)
 * Alien Incident
 * Alien Intelligence (Palladium Books)
 * Alien Intruder
 * Alien Lockdown
 * Alien Logic: A Skyrealms of Jorune Adventure
 * Alien Mind
 * Alien Nation
 * Alien Nation (TV series)
 * Alien Nation (comics)
 * Alien Nation (novel series)
 * Alien Oceans
 * Alien Pizza Planet
 * Alien Planet
 * Alien Planet (novel)
 * Alien Resurrection
 * Alien Resurrection (video game)
 * Alien Soldier
 * Alien Swarm
 * Alien Terminator
 * Alien Trespass
 * Alien Trilogy
 * Alien War
 * Alien Worlds (TV series)
 * Alien Worlds (radio series)
 * Alien Xmas
 * Alien abduction
 * Alien abduction entities
 * Alien autopsy
 * Alien from L.A.
 * Alien invasion
 * Alien language
 * Alien language in science fiction
 * Alien visitation
 * Alien vs Predator (Atari Jaguar game)
 * Alien vs Predator (SNES)
 * Alien vs. Predator (arcade game)
 * Alien vs. Predator (film)
 * Alien: Covenant
 * Alien: Isolation
 * Alien: Out of the Shadows
 * Aliens (1990 video game)
 * Aliens Adventure Game
 * Aliens Infestation
 * Aliens Online
 * Aliens Predator Customizable Card Game
 * Aliens Versus Predator: Extinction
 * Aliens in the Attic
 * Aliens of London
 * Aliens versus Predator (1999 video game)
 * Aliens versus Predator 2
 * Aliens vs. Predator (2010 video game)
 * Aliens vs. Predator: Requiem
 * Aliens vs. Predator: Requiem (video game)
 * Aliens: A Comic Book Adventure
 * Aliens: Colonial Marines
 * Aliens: Earth Hive
 * Aliens: Nightmare Asylum
 * Aliens: Phalanx
 * Aliens: Thanatos Encounter
 * Aliens: The Computer Game (1986 video game)
 * Aliens: The Computer Game (1987 video game)
 * Aliens: The Female War
 * Alignak
 * Alignments of random points
 * Aliidiomarina
 * Alikhan Bukeikhanov
 * Alikhanian–Alikhanov spectrometer
 * Alina Kabata-Pendias
 * Alinda asteroid
 * Alisol
 * Alison Murray (scientist)
 * Alister Pearson
 * Alitus (crater)
 * Alizarine Yellow R
 * Alkalibacter saccharofermentans
 * Alkaline precipitation
 * Alkaliphile
 * All About Space
 * All Bar One
 * All Day Long I Dream About Sex
 * All Good Things... (Star Trek: The Next Generation)
 * All Hallows' Eve (2013 film)
 * All Hallows' Eve (2016 film)
 * All I Have to Do Is Dream
 * All Nighter (bus service)
 * All Our Yesterdays (Star Trek: The Original Series)
 * All Sky Automated Survey
 * All Sky Automated Survey for SuperNovae
 * All Summer in a Day
 * All Systems Red
 * All That's Left Is Love
 * All in the Mind (song)
 * All in the golden afternoon...
 * All the Boys Love Mandy Lane
 * All the Way (Buffy the Vampire Slayer)
 * All the Weyrs of Pern
 * All-Blacks Nunataks
 * All-Russian Institute Of Aviation Materials
 * All-Star Superman (film)
 * AllTrails
 * Alla Masevich
 * Allabogdanite
 * Allah as a lunar deity
 * Allahabad Observatory
 * Allais effect
 * Allan Chapman (historian)
 * Allan Hendry
 * Allan Hills 77005
 * Allan Hills 84001
 * Allan Hills A81005
 * Allan Hobson
 * Allan I. Carswell Astronomical Observatory
 * Allan Rechtschaffen
 * Allan Sandage
 * Allantide
 * Allegan (meteorite)
 * Allegiance (novel)
 * Allegiance (video game)
 * Allegro gravitational-wave detector
 * Allen Abraham
 * Allen F. Donovan
 * Allen H. Greenfield
 * Allen Hershkowitz
 * Allen O. Gamble
 * Allen Steele
 * Allen Telescope Array
 * Allen Theatre
 * Allende meteorite
 * Allhallowtide
 * Alliance for Coastal Technologies
 * Alliance for Space Development
 * Alliance to Rescue Civilization
 * Alliance–Union universe
 * Allies (Star Wars novel)
 * Allister Whitehead
 * Allobarbital
 * Allochem
 * Allochthon
 * Allopatric speciation
 * Alluvial river
 * Allvar Gullstrand
 * Almagest
 * Almanach cracoviense ad annum 1474
 * Almanach de Liège
 * Almanon (crater)
 * Almaqah
 * Almaz
 * Almucantar
 * Alnilam
 * Alnitak
 * Aloha (crater)
 * Aloha Wanderwell
 * Alois Purgathofer
 * Alone Again Or
 * Alone in the Universe (book)
 * Alonso (crater)
 * Alouette 1
 * Alouette 2
 * Aloysius Cortie
 * Aloysius Lilius
 * Alp (folklore)
 * Alpetragius (crater)
 * Alpha & Omega (book)
 * Alpha Andromedae
 * Alpha Antliae
 * Alpha Apodis
 * Alpha Aquarii
 * Alpha Arae
 * Alpha Caeli
 * Alpha Camelopardalis
 * Alpha Cancri
 * Alpha Capricorni
 * Alpha Capricornids
 * Alpha Cassiopeiae
 * Alpha Centauri
 * Alpha Centauri (Doctor Who)
 * Alpha Centauri Bb
 * Alpha Centauri in fiction
 * Alpha Centauri or Die!
 * Alpha Centaurids
 * Alpha Cephei
 * Alpha Ceti
 * Alpha Chamaeleontis
 * Alpha Circini
 * Alpha Columbae
 * Alpha Comae Berenices
 * Alpha Coronae Australis
 * Alpha Coronae Borealis
 * Alpha Corvi
 * Alpha Crateris
 * Alpha Cygni variable
 * Alpha Delphini
 * Alpha Doradus
 * Alpha Equulei
 * Alpha Fornacis
 * Alpha Gruis
 * Alpha Herculis
 * Alpha Horologii
 * Alpha Hydri
 * Alpha Indi
 * Alpha Lacertae
 * Alpha Leporis
 * Alpha Librae
 * Alpha Lupi
 * Alpha Lyncis
 * Alpha Magnetic Spectrometer
 * Alpha Mensae
 * Alpha Microscopii
 * Alpha Monocerotids
 * Alpha Monocerotis
 * Alpha Muscae
 * Alpha Octantis
 * Alpha Ophiuchi
 * Alpha Pavonis
 * Alpha Pegasi
 * Alpha Persei
 * Alpha Persei Cluster
 * Alpha Phoenicis
 * Alpha Pictoris
 * Alpha Piscium
 * Alpha Pyxidis
 * Alpha Regio
 * Alpha Reticuli
 * Alpha Sagittae
 * Alpha Sagittarii
 * Alpha Scorpio
 * Alpha Sculptoris
 * Alpha Scuti
 * Alpha Serpentis
 * Alpha Sextantis
 * Alpha Telescopii
 * Alpha Trianguli
 * Alpha Trianguli Australis
 * Alpha Tucanae
 * Alpha Ursae Majoris
 * Alpha Volantis
 * Alpha Vulpeculae
 * Alpha nuclide
 * Alpha particle X-ray spectrometer
 * Alpha process
 * Alpha-particle spectroscopy
 * Alpha1 Capricorni
 * Alpha2 Canum Venaticorum variable
 * Alpha2 Capricorni
 * Alphabus
 * Alphard
 * Alphenal
 * Alpher–Bethe–Gamow paper
 * Alphonse Borrelly
 * Alphonsus (crater)
 * Alpine Astrovillage Lü-Stailas
 * Alpine Biogeographic Region
 * Alpine Electronics
 * Alps
 * Alruba
 * Als die Götter starben
 * Alsat-1B
 * Alsat-2A
 * Alston Block
 * Altai Mountains
 * Altair
 * Altair (rocket stage)
 * Altair (spacecraft)
 * Altair in fiction
 * Altar (Brazilian band)
 * Altar Stone (Stonehenge)
 * Altazimuth mount
 * Alter (crater)
 * Altererythrobacter gangjinensis
 * Altererythrobacter ishigakiensis
 * Altererythrobacter luteolus
 * Altererythrobacter troitsensis
 * Alternate Presidents
 * Alternatives to general relativity
 * Altitude
 * Alto Trek
 * Altona Observatory
 * Aluminium toxicity in people on dialysis
 * Aluminium-based nanogalvanic alloys
 * Aluminum based nanogalvanic alloys
 * Alundra
 * Alvan Clark
 * Alvan Clark & Sons
 * Alvan Graham Clark
 * Alvar
 * Alvarez hypothesis
 * Alver (crater)
 * Alvin (crater)
 * Alvin Drew
 * Alvinella pompejana
 * Alwyn Crow
 * Alwyn Williams (bishop)
 * Alycia J. Weinberger
 * Alyoshenka
 * Alyssa A. Goodman
 * Alén Space
 * Alû
 * Am star
 * Amafufunyana
 * Amagat's law
 * Amalia Ercoli Finzi
 * Amalthea (moon)
 * Amanawa Shinmei Shrine
 * Amanda Bauer
 * Amanda Harkimo
 * Amanda Hendrix
 * Amanda Lepore
 * Amanda Weltman
 * Amanoiwato Shrine
 * Amaral (crater)
 * Amaravella
 * Amasa Holcomb
 * Amaterasu
 * Amateur Astronomers Association of Pittsburgh
 * Amateur Telescope Making
 * Amateur astronomy
 * Amateur radio satellite
 * Amateur telescope making
 * Amatsumikaboshi
 * Amavasya
 * Amazon Basin (sedimentary basin)
 * Amazon Tall Tower Observatory
 * Amazon Women on the Moon
 * Amazon biome
 * Amazonas 1
 * Amazonas 3
 * Amazonian pygmy owl
 * Amazonis quadrangle
 * Amazônia-1
 * Amba (landform)
 * Ambapur Nagla meteorite
 * Ambasada Gavioli
 * Ambassador (B&O train)
 * Ambassador Theatre (St. Louis)
 * Amber Ruffin
 * Amber Straughn
 * Amberjack Hole
 * Ambiguity resolution
 * Ambipolar diffusion
 * Ambisagrus
 * Ambriel
 * Ambrogio Fogar
 * Ambrose Applejohn's Adventure
 * Ambrose Medal
 * Ambrosius Aurelianus
 * Ame-no-Minakanushi
 * Ame-no-Uzume
 * Ameghino (crater)
 * Amelia Andersdotter
 * Amelia Creek crater
 * Amelia E. Shevenell
 * Amenthes Fossae
 * Amenthes quadrangle
 * America Sings
 * America's Space Prize
 * America's Stonehenge
 * American Academy of Environmental Engineers and Scientists
 * American Academy of Sleep Medicine
 * American Association of Sleep Technologists
 * American Association of Variable Star Observers
 * American Astronautical Society
 * American Astronomical Society
 * American Astronomical Society 215th meeting
 * American Board of Opticianry
 * American Board of Sleep Medicine
 * American College of Occupational and Environmental Medicine
 * American Composer Series
 * American Eclipse (book)
 * American Ephemeris and Nautical Almanac
 * American Federation of Astrologers
 * American Geosciences Institute
 * American Journal of Science
 * American Meteor Society
 * American Mineralogist
 * American Museum Novitates
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 * American Pyrotechnics Association
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 * American Society for Photogrammetry and Remote Sensing
 * American Society of Agronomy
 * Amerika (nightclub)
 * Ames Research Center
 * Ames Stereo Pipeline
 * Ames crater
 * Amesbury Archer
 * Ametlla de Mar Observatory
 * Amguid crater
 * Amici (crater)
 * Amina Helmi
 * Amirani (volcano)
 * Amitabha Ghosh (planetary geologist)
 * Ammonia
 * Ammonia fungi
 * Ammonia volatilization from urea
 * Ammonifex
 * Ammonifex degensii
 * Ammonifex thiophilus
 * Ammonium perchlorate composite propellant
 * Ammonius (crater)
 * Ammonius Hermiae
 * Amnesia (nightclub)
 * Amnion (Gap Cycle)
 * Amobarbital
 * Amok Time
 * Among Us
 * Amontons (crater)
 * Amor asteroid
 * Amore libero - Free Love
 * Amorphous carbonia
 * Amorphus coralli
 * Amorphus orientalis
 * Amorphus suaedae
 * Amos-17
 * Amos-2
 * Amos-3
 * Amos-4
 * Amos-5
 * Amos-6
 * Amphetamine
 * Amphidromic point
 * Amphoterite
 * Amplitude domain reflectometry
 * Amplituhedron
 * Ampo (snack)
 * Amri Hernández-Pellerano
 * Amri Wandel
 * Amru Al-Qays (crater)
 * Amrutham Chandamamalo
 * Amshuman (deity)
 * Amsterdam Ordnance Datum
 * Amtor
 * Amun
 * Amundsen (crater)
 * Amunet
 * Amur (launch vehicle)
 * Amurca
 * Amy B. Jordan (astronomer)
 * Amy Barger
 * Amy Barr
 * Amy Bower
 * Amy Lalonde
 * Amy Leventer
 * Amy Mainzer
 * Amy Simon
 * Amy Townsend-Small
 * An American Pickle
 * An Astronomer
 * An Elder Scrolls Legend: Battlespire
 * An Exceptionally Simple Theory of Everything
 * An Irish Astronomical Tract
 * An Old-Time Nightmare (1911 film)
 * An Unkindness of Ghosts
 * An der Zeitmauer
 * Ana (programming language)
 * Ana Achúcarro
 * Ana Teresa Diego
 * Anabranch
 * Anacoustic zone
 * Anadyrsky District
 * Anaerolinea thermolimosa
 * Anaerolinea thermophila
 * Anala Mons
 * Analemma
 * Analemmatic sundial
 * Analog models of gravity
 * Analogue: A Hate Story
 * Analytical quality control
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 * Anammox
 * Anania Shirakatsi
 * Ananke (moon)
 * Ananke group
 * Anat Shahar
 * Anathem
 * Anatolia
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 * Anatoly Artsebarsky
 * Anatoly Berezovoy
 * Anatoly Dorodnitsyn
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 * Anatoly Vlasov
 * Anaxilaus
 * Anaximander (crater)
 * Anaximenes (crater)
 * Ancestral Thames
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 * Anchor Inn, Birmingham
 * Ancient Aliens
 * Ancient Echoes Interpretive Centre
 * Ancient Egyptian creation myths
 * Ancient Egyptian units of measurement
 * Ancient Greek astronomy
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 * Ancient Ram Inn
 * Ancient astronauts
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 * Ancillary Justice
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 * And When the Sky Was Opened
 * And yet it moves
 * Andal (crater)
 * Andalò del Negro
 * Andaman hawk-owl
 * Andaman scops owl
 * Andean Geology
 * Andean pygmy owl
 * Andean-Saharan glaciation
 * Anders (crater)
 * Anders Celsius
 * Anders Donner
 * Anders Johan Lexell
 * Anders Jonas Ångström
 * Anders Lindstedt
 * Anders Planman
 * Anders Spole
 * Anderson (crater)
 * Andersons Cove Formation
 * Andersson (crater)
 * Andes
 * Andesite
 * Andesite line
 * Andisol
 * Andorra
 * Andosol
 * Andre Melendez
 * Andrea Argoli
 * Andrea Boattini
 * Andrea Di Paola
 * Andrea Dupree
 * Andrea M. Ghez
 * Andrea Milani (mathematician)
 * Andreas Albrecht (chemist)
 * Andreas Albrecht (cosmologist)
 * Andreas Cellarius
 * Andreas Eschbach
 * Andreas Gerasimos Michalitsianos
 * Andreas Nottebohm
 * Andreas Stöberl
 * Andrei Borisovich Vistelius Research Award
 * Andrei Doroshkevich
 * Andrei Linde
 * Andrei Severny
 * Andrei Tarkovsky
 * Andrej Čadež
 * Andreja Gomboc
 * Andrew Abercromby
 * Andrew Ainslie Common
 * Andrew Ballard
 * Andrew Blain
 * Andrew Chaikin
 * Andrew Claude de la Cherois Crommelin
 * Andrew Collier Cameron
 * Andrew Digby
 * Andrew Fabian
 * Andrew Fraknoi
 * Andrew G. Haley
 * Andrew Graham (astronomer)
 * Andrew Hollis
 * Andrew I. Porter
 * Andrew Ingersoll
 * Andrew J. Feustel
 * Andrew J. Offutt
 * Andrew J. Stofan
 * Andrew King (astrophysicist)
 * Andrew Lenton
 * Andrew Leonard
 * Andrew Lyne
 * Andrew M. Allen
 * Andrew M. Butler
 * Andrew M. Davis
 * Andrew Marston
 * Andrew McKellar
 * Andrew Mishkin
 * Andrew Niccol
 * Andrew R. Liddle
 * Andrew Rader
 * Andrew Sawyer
 * Andrew Siemion
 * Andrew Stanton
 * Andrew Steele (astrobiologist)
 * Andrew Ure
 * Andrew Warren (geographer)
 * Andrews Cargo Module
 * Andrey Fediaev
 * Andriamahilala
 * Andriyan Nikolayev
 * Andro Dunos
 * Androcydes (Pythagorean)
 * Androgynous Peripheral Attach System
 * Andromeda (TV series)
 * Andromeda (constellation)
 * Andromeda (novel)
 * Andromeda Galaxy
 * Andromeda I
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 * Andromeda III
 * Andromeda IV
 * Andromeda IX
 * Andromeda Shun
 * Andromeda Stories
 * Andromeda V
 * Andromeda VIII
 * Andromeda X
 * Andromeda XI
 * Andromeda XIX
 * Andromeda XVIII
 * Andromeda XXI
 * Andromeda XXII
 * Andromeda in Chinese astronomy
 * Andromeda–Milky Way collision
 * Andromedids
 * Andronov (crater)
 * Andrushivka Astronomical Observatory
 * Andrzej Trautman
 * Andrzej Udalski
 * András Vasy
 * André Brahic
 * André Cailleux
 * André Kuipers
 * André Lichnerowicz
 * André Patry
 * Andrés Eloy Martínez
 * Andrés de Urdaneta
 * Andura meteorite
 * Andy Caldwell
 * Andy Cato
 * Andy Cohen
 * Andy Duguid
 * Andy Hunter (DJ)
 * Andy Thomas
 * Andymon
 * Andøya Space Center
 * Anděl (crater)
 * Aneirin (crater)
 * Anemic galaxy
 * Aneutronic fusion
 * Angara-1.2pp
 * Angel Hotel, Chippenham
 * Angel Links
 * Angel Unchained
 * Angel and Crown, Covent Garden
 * Angel's Luck
 * Angela Olinto
 * Angela Petrelli
 * Angela Speck
 * Angelika Brandt
 * Angeline Stickney
 * Angelique Bouchard Collins
 * Angelita Castro-Kelly
 * Angell Hall Observatory
 * Angelo Marchetti
 * Angelo Secchi
 * Angelou (crater)
 * Angels (nightclub)
 * Angels Die Hard
 * Angels Hard as They Come
 * Angels from Hell
 * Angels' Wild Women
 * Angers (meteorite)
 * Angioletta Coradini
 * Angkas
 * Angkasawan program
 * Angkor Wat
 * Angle (astrology)
 * Angle-resolved low-coherence interferometry
 * Angle-resolved photoemission spectroscopy
 * Anglesea Arms, South Kensington
 * Anglo-Australian Near-Earth Asteroid Survey
 * Anglo-Australian Planet Search
 * Anglo-Australian Telescope
 * Anglo-French Conference on Time-keeping at Sea
 * AngoSat 1
 * Angra dos Reis meteorite
 * Angrite
 * Angry Birds Space
 * Angry Birds Star Wars
 * Angry Birds Star Wars II
 * Angstrom exponent
 * Angström (crater)
 * Anguissola (crater)
 * Angular diameter
 * Angular distance
 * Angular house
 * Angular momentum problem
 * Angus McKie
 * Angustus Labyrinthus
 * Anheung Proving Ground
 * Aniak (crater)
 * Aniara (film)
 * Anil Bhardwaj
 * Anil Kumar Das
 * Anima Patil-Sabale
 * Animals (Muse song)
 * Animals in space
 * Animated mapping
 * Animorphs (TV series)
 * Animorphs Chronicles
 * Anisothermal plasma
 * Anita Buma
 * Anita Sengupta
 * Anja Cetti Andersen
 * Anja Strømme
 * Anka Lambreva
 * Ankara University Observatory
 * Ankaramite
 * Ankober (meteorite)
 * Ankotarinja
 * Anlaug Amanda Djupvik
 * Anlong (meteorite)
 * Ann Druyan
 * Ann E. Wehrle
 * Ann Hornschemeier
 * Ann Merchant Boesgaard
 * Ann W. Richards Congress Avenue Bridge
 * Anna Frebel
 * Anna Hansell
 * Anna Kikina
 * Anna L. Nickel telescope
 * Anna Lee Fisher
 * Anna Milton
 * Anna N. Żytkow
 * Anna Scaife
 * Anna Science Centre, Tiruchirappalli
 * Anna Sofaer
 * Anna Styszyńska
 * Anna Watts
 * Anna Wåhlin
 * Annaheim meteorite
 * Annalee Newitz
 * Annales Geophysicae
 * Annales de Géographie
 * Annals of Carnegie Museum
 * Annals of the American Association of Geographers
 * Annals of the Former World
 * Annapurni Subramaniam
 * Anne Archibald
 * Anne Barbara Underhill
 * Anne Harris (author)
 * Anne L. Kinney
 * Anne McClain
 * Anne Passovoy
 * Anne Savage (DJ)
 * Anne Thorne
 * Anne Tihon
 * Anne Walker (astronomer)
 * Anne's Spot
 * Anne-Marie Lagrange
 * Annealed pyrolytic graphite
 * Anneila Sargent
 * Annette Ferguson
 * Anni Hogan
 * Annibale Riccò
 * Annibale de Gasparis
 * Annick Pouquet
 * Annick Wilmotte
 * Annie Chambers Ketchum
 * Annie Easley
 * Annie Jump Cannon
 * Annie Jump Cannon Award in Astronomy
 * Annie Ross
 * Annie S. D. Maunder
 * Annihilation (film)
 * Anniversary (short story)
 * Anno 2205
 * Annobón scops owl
 * Annona (crater)
 * Annual Review of Astronomy and Astrophysics
 * Annual Review of Earth and Planetary Sciences
 * Annual Review of Environment and Resources
 * Annual Review of Marine Science
 * Annual cycle
 * Annualized geo solar
 * Anomalous X-ray pulsar
 * Anomalous experiences
 * Anomalous oxygen
 * Anorogenic magmatism
 * Another Brick in the Wall
 * Another Earth
 * Another Life (2019 TV series)
 * Another Planet / Voyager
 * Another World (video game)
 * Anousheh Ansari
 * Anoxic event
 * Anoxynatronum
 * Anoxynatronum sibiricum
 * Ansa (Hinduism)
 * Ansari X Prize
 * Anseris Mons
 * Ansgarius (crater)
 * Ant-Man and The Wasp: Nano Battle!
 * Antagonism (chemistry)
 * Antarctic Benthic Deep-Sea Biodiversity Project
 * Antarctic Circle
 * Antarctic Impulsive Transient Antenna
 * Antarctic Muon And Neutrino Detector Array
 * Antarctic Science
 * Antarctic Specially Managed Area
 * Antarctic Submillimeter Telescope and Remote Observatory
 * Antarctic Technology Offshore Lagoon Laboratory
 * Antarctic continental shelf
 * Antarctic ice sheet
 * Antarctic microorganism
 * Antarctic realm
 * Antarctic sea ice
 * Antarctica
 * Antarctica Schmidt telescopes
 * Antares
 * Antares A-ONE
 * Antariksham 9000 KMPH
 * Ante Radonić
 * Antecedent drainage stream
 * Antecedent moisture
 * Anteclise
 * Antenna tracking system
 * Antennae Galaxies
 * Anthe (moon)
 * Anthem (video game)
 * Anthocyanidin
 * Anthocyanin
 * Anthology Film Archives
 * Anthology of Interest I
 * Anthony Acid
 * Anthony Aguirre
 * Anthony Andre
 * Anthony Aveni
 * Anthony Besch
 * Anthony Boucher
 * Anthony Brown (scientist)
 * Anthony Heald
 * Anthony Llewellyn
 * Anthony Moffat
 * Anthony Naples
 * Anthony Pappa
 * Anthony Patrick Fairall
 * Anthony W. England
 * Anthony Wesley
 * Anthony Wynn
 * Anthoxanthin
 * Anthrepts
 * Anthropic Bias (book)
 * Anthropic principle
 * Anthropic rock
 * Anthropization
 * Anthropocene Working Group
 * Anthropogenic hazard
 * Anthroposol
 * Anthroposphere
 * Anthroposystem
 * Anthrosol
 * Anthrozoology
 * Anti-de Sitter space
 * Anti-gravity
 * Anti-greenhouse effect
 * Anti-satellite weapon
 * Anti-sidereal time
 * Antic Collective
 * Anticenter shell
 * Antigo (soil)
 * Antihydrogen
 * Antikythera mechanism
 * Antimatter comet
 * Antimatter-catalyzed nuclear pulse propulsion
 * Antimycin A
 * Antinous (constellation)
 * Antipode (journal)
 * Antipodes
 * Antique Telescope Society
 * Antireticular cytotoxic serum
 * Antisolar point
 * Antitaenite
 * Antitail
 * Antitropical distribution
 * Antlia
 * Antlia 2
 * Antlia Cluster
 * Antlia Dwarf
 * Antlia-Sextans Group
 * Antoine Poidebard
 * Antoine Thomas
 * Anton Buslov
 * Anton Deusing
 * Anton Frederik Bruun
 * Anton Gogeisl
 * Anton LaVey
 * Anton Maria Schyrleus of Rheita
 * Anton Melik Geographical Institute
 * Anton Staus
 * Anton Thraen
 * Anton Vamplew
 * Anton Zensus
 * Antonella Buccianti
 * Antoni Opolski
 * Antoni Przybylski
 * Antonia Ferrín Moreiras
 * Antonia Maury
 * Antoniadi (Martian crater)
 * Antoniadi (lunar crater)
 * Antoniadi Dorsum
 * Antoniadi scale
 * Antonie Pannekoek
 * Antonie van Leeuwenhoek
 * Antonio Abetti
 * Antonio Cagnoli
 * Antonio Fresco
 * Antonio Lazcano
 * Antonio Margheriti
 * Antonio Pacinotti
 * Antonio Pigafetta
 * Antonio Rodotà
 * Antonio Santucci
 * Antonio Vagnozzi
 * Antonio de León y Gama
 * Antonio de Ulloa
 * Antonov An-225 Mriya
 * Antony Cooke
 * Antony Hewish
 * Antonín Bečvář
 * Antonín Mrkos
 * Antonín Rükl
 * Antricola delacruzi
 * Antricola guglielmonei
 * Antricola inexpectata
 * Antricola marginatus
 * Antrix Corporation
 * Antu (Mapuche mythology)
 * Antígona Segura
 * António Cabreira
 * António de Mariz Carneiro
 * Anuchin (crater)
 * Anumati (deity)
 * Anumati (lunar phase)
 * Anuradha (nakshatra)
 * Anushandhitshu Chokro Science Organization
 * Anvari
 * Anville (crater)
 * Anxiety dream
 * Anxurus
 * Any Colour You Like
 * Anybots
 * Anyte (crater)
 * Anywhere on Earth
 * Anzhong Wang
 * Aoede (moon)
 * Aomawa Shields
 * Aoraki / Mount Cook
 * Aoraki / Mount Cook National Park
 * Aorounga crater
 * Aouelloul crater
 * Ap (water)
 * Ap and Bp stars
 * Apache Point Observatory
 * Apache Point Observatory Lunar Laser-ranging Operation
 * Apache tears
 * Apatsahayesvarar Temple, Alangudi
 * Apennine Mountains
 * Apep
 * Apep (star system)
 * Aperture
 * Aperture Photometry Tool
 * Aperture masking interferometry
 * Aperture synthesis
 * Aphanite
 * Aphotic zone
 * Aphrodite
 * Aphrodite Terra
 * Aphroditus
 * Apianus (crater)
 * Apix, Florida
 * Apocalypse (Star Wars novel)
 * Apocalypse of Golias
 * Apogee of Fear
 * Apollinaris Mons
 * Apollo
 * Apollo (System Copernicus)
 * Apollo (crater)
 * Apollo (spacecraft)
 * Apollo 1
 * Apollo 1 Hills
 * Apollo 10
 * Apollo 11
 * Apollo 11 (1996 film)
 * Apollo 11 (2019 film)
 * Apollo 11 50th Anniversary commemorative coins
 * Apollo 11 anniversaries
 * Apollo 11 goodwill messages
 * Apollo 11 in popular culture
 * Apollo 11 lunar sample display
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 * Apollo 12
 * Apollo 12 Passive Seismic Experiment
 * Apollo 13
 * Apollo 13 (film)
 * Apollo 13: Mission Control
 * Apollo 14
 * Apollo 14 Passive Seismic Experiment
 * Apollo 15
 * Apollo 15 operations on the Lunar surface
 * Apollo 15 postal covers incident
 * Apollo 16
 * Apollo 17
 * Apollo 17 lunar sample display
 * Apollo 18
 * Apollo 18 (film)
 * Apollo 18: Mission to the Moon
 * Apollo 18: The Moon Missions
 * Apollo 20 hoax
 * Apollo 21
 * Apollo 23
 * Apollo 4
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 * Apollo 6
 * Apollo 7
 * Apollo 8
 * Apollo 8 Genesis reading
 * Apollo 9
 * Apollo Abort Guidance System
 * Apollo Applications Program
 * Apollo Docking Mechanism
 * Apollo Gauntlet
 * Apollo Guidance Computer
 * Apollo Lunar Module
 * Apollo Lunar Surface Experiments Package
 * Apollo M. O. Smith
 * Apollo Observatory
 * Apollo PGNCS
 * Apollo TV camera
 * Apollo Telescope Mount
 * Apollo abort modes
 * Apollo asteroid
 * Apollo command and service module
 * Apollo in Real Time
 * Apollo insurance covers
 * Apollo program
 * Apollo spacecraft feasibility study
 * Apollo-Soyuz (cigarette)
 * Apollo/Skylab space suit
 * Apollodorus (crater)
 * Apollonius (crater)
 * Apollonius of Tyana
 * Apollo–Soyuz
 * Appa (character)
 * Appalachia (landmass)
 * Appalachian Mountains
 * Appalachian Plateau
 * Apparent horizon
 * Apparent longitude
 * Apparent magnitude
 * Apparent oxygen utilisation
 * Apparent place
 * Apparent retrograde motion
 * Apple Jack
 * Apple bobbing
 * Apple cider
 * Applegate mechanism
 * Apples and Oranges (song)
 * Appleton (crater)
 * Appleton–Hartree equation
 * Appley Bridge meteorite
 * Application of silicon-germanium thermoelectrics in space exploration
 * Applications Technology Satellite
 * Applied Geography
 * Applied Physics Laboratory
 * Applied Spectroscopy (journal)
 * Applied and Environmental Microbiology
 * Applied spectroscopy
 * Apprehensive Films
 * Approach and Landing Tests
 * Approaching the Unknown
 * Appulse
 * Aprilis
 * AprizeSat
 * Aprobarbital
 * Apronal
 * Apse line
 * Apsidal precession
 * Apsis
 * Apstar 2
 * Apstar 2R
 * Apstar 6
 * Apstar 6C
 * Apstar 7
 * Apsus Vallis
 * Apus
 * Apus in Chinese astronomy
 * Aqua (satellite)
 * Aqua Teen Hunger Force
 * AquaSalina
 * Aquablue
 * Aquacade (satellite)
 * Aquamarine (video game)
 * Aquanaut
 * Aquariids
 * Aquarion Evol
 * Aquarius (SAC-D instrument)
 * Aquarius (astrology)
 * Aquarius (constellation)
 * Aquarius (rocket)
 * Aquarius Dwarf
 * Aquarius Reef Base
 * Aquarius Stream
 * Aquarius in Chinese astronomy
 * Aquatic biomonitoring
 * Aquatic ecosystem
 * Aquatic science
 * Aquatic succession
 * Aquatic toxicology
 * Aquatic toxicology databases
 * Aquaveo
 * Aqueous geochemistry
 * Aquifer
 * Aquifer properties
 * Aquifer test
 * Aquifex
 * Aquila (constellation)
 * Aquila X-1
 * Aquila in Chinese astronomy
 * Aquillapollenites
 * Aquimarina
 * Aquisalimonas asiatica
 * Aquisalimonas halophila
 * Aquisalimonas lutea
 * ArDM
 * Ara (constellation)
 * Ara in Chinese astronomy
 * Arab Astronomical Society
 * Arab Satellite Communications Organization
 * Arabia quadrangle
 * Arabian scops owl
 * Arabic and Islamic names of Moon craters
 * Arabic parts
 * Arabidopsis thaliana
 * Arabsat-1A
 * Arabsat-1B
 * Arabsat-5A
 * Arabsat-6A
 * Arachnoid (astrogeology)
 * Aradia
 * Aradia, or the Gospel of the Witches
 * Arago (Martian crater)
 * Arago (lunar crater)
 * Arago spot
 * Arago telescope
 * Aragon House
 * Aragoscope
 * Araguainha crater
 * Arakawa grids
 * Aralkylamine N-acetyltransferase
 * Aram Chaos
 * Arandas (crater)
 * Arase (satellite)
 * Aratus (crater)
 * Araucaria Project
 * Arbol Solo (meteorite)
 * Arbuscular mycorrhiza
 * Arc blow
 * Arc converter
 * Arc flash
 * Arc lamp
 * Arc suppression
 * Arc welding
 * Arcadia Formation (Australia)
 * Arcadia of My Youth
 * Arcadia quadrangle
 * Arcadio Poveda
 * Arcas (crater)
 * Arcas (rocket)
 * Arcetri Observatory
 * Arceus
 * Archaea
 * Archaeal Richmond Mine acidophilic nanoorganisms
 * Archaeal transcription
 * Archaeal transcription factor B
 * Archaellum
 * Archaeoastronomy
 * Archaeoastronomy and Stonehenge
 * Archaeoastronomy and Vedic chronology
 * Archaeocin
 * Archaeoglobaceae
 * Archaeoglobus profundus
 * Archaeonycteris
 * Archaerhodopsin
 * Archdiocesan Classical Gymnasium (Zagreb)
 * Arche (moon)
 * Archean
 * Archenhold Observatory
 * Archeops
 * Archer (season 10)
 * Arches Cluster
 * Arches National Park
 * Archibald J. Mason
 * Archie (meteorite)
 * Archie Roy
 * Archimedes (crater)
 * Archinaut
 * Archives for UFO Research
 * Archivist (band)
 * Archivos do Museu Nacional
 * Archway Tavern
 * Archytas
 * Archytas (crater)
 * Arcing horns
 * Arcminute Cosmology Bolometer Array Receiver
 * Arcminute Microkelvin Imager
 * Arctic
 * Arctic (journal)
 * Arctic Alaska-Chukotka terrane
 * Arctic Biogeographic Region
 * Arctic Cape
 * Arctic Circle
 * Arctic Intermediate Water
 * Arctic Lowlands
 * Arctic Mars Analog Svalbard Expedition
 * Arctic Ocean
 * Arctic Planetary Science Institute
 * Arctic and Antarctic Research Institute
 * Arctic ecology
 * Arctic geoengineering
 * Arctic ice pack
 * Arctic sea ice decline
 * Arctic studies
 * Arctic, Antarctic, and Alpine Research
 * Arctic–alpine
 * Arcto-Tertiary Geoflora
 * Arcturus
 * Arcturus moving group
 * Arcus (Titan)
 * Arcus (satellite)
 * Ardra (nakshatra)
 * ArduSat
 * Are You Afraid of the Dark?
 * Area (journal)
 * Area 51: The Dreamland Chronicles
 * Area of Special Conservation Interest
 * Arecibo Catena
 * Arecibo Observatory
 * Arecibo Telescope
 * Arecibo message
 * Areius
 * Arendalsfeltet
 * Areocentric orbit
 * Areostationary orbit
 * Areosynchronous orbit
 * Ares
 * Ares (missile)
 * Ares I
 * Ares I-X
 * Ares V
 * Ares Vallis
 * Aresas
 * Argelander (crater)
 * Argentine Institute of Radio Astronomy
 * Argentine National Observatory
 * Argo (NASA spacecraft)
 * Argo (Russian spacecraft)
 * Argo (crater)
 * Argo (oceanography)
 * Argo Navis
 * ArgoMoon
 * ArgoNeuT
 * Argonaut (train)
 * Argonaut class reactor
 * Argonne National Laboratory
 * Argonne Tandem Linear Accelerator System
 * Argonne–Northwestern Solar Energy Research Center
 * Argos (satellite system)
 * Argument of latitude
 * Argument of periapsis
 * Argunov–Cassegrain telescope
 * Argus Coastal Monitoring
 * Argus laser
 * Argyll Arms
 * Argyre Planitia
 * Argyre quadrangle
 * Ari Ben-Menahem
 * Ari Trausti Guðmundsson
 * Aria (manga)
 * Ariadaeus (crater)
 * Ariadne (crater)
 * Ariadnes Colles
 * Ariane (rocket family)
 * Ariane 2
 * Ariane Passenger Payload Experiment
 * Ariane flight VA240
 * Ariane flight VA241
 * Ariane flight VA242
 * Ariane flight VA243
 * Ariane flight VA244
 * Ariane flight VA245
 * Ariane flight VA246
 * Ariane flight VA247
 * Ariane flight VA248
 * Ariane flight VA253
 * Arianespace
 * Arica (crater)
 * Ariccia
 * Arid
 * Aridisol
 * Aridity index
 * Ariel (DJ)
 * Ariel (Firefly episode)
 * Ariel (anime)
 * Ariel (moon)
 * Ariel (rocket)
 * Ariel 1
 * Ariel 2
 * Ariel 3
 * Ariel 4
 * Ariel 5
 * Ariel 6
 * Ariel Waldman
 * Ariel programme
 * Aries (astrology)
 * Aries (constellation)
 * Aries (rocket)
 * Aries in Chinese astronomy
 * Arietids
 * Arif V 216
 * Arignote
 * Arignotus
 * Arinna
 * Arirang-1
 * Arirang-2
 * Aristarchos 2.3 m Telescope
 * Aristarchus (crater)
 * Aristide Bruant
 * Aristides Brezina
 * Aristillus (crater)
 * Aristoteles (crater)
 * Aristotle
 * Aristotle's Comet
 * Aristoxenus
 * Aristoxenus (crater)
 * Arixenia esau
 * Arizona Geological Survey
 * Arizona Limited
 * Arizona Science Center
 * Arjen Roelofs
 * Arjuna asteroid
 * Arkady Ostashev
 * Arkaim
 * Arkanoid vs. Space Invaders
 * Arkhangelsky (crater)
 * Arlen F. Chase
 * Arlene Blum
 * Arlene Schnitzer Concert Hall
 * Arlene's Grocery
 * Arlo U. Landolt
 * Arm (geography)
 * ArmCosmos
 * Arma (deity)
 * Armada 2525
 * Armadillo Aerospace
 * Armageddon (1998 film)
 * Armageddon 2419 A.D.
 * Armagh Observatory
 * Armagh Planetarium
 * Armalcolite
 * Armand van Helden
 * Armavir Radar Station
 * Armenia
 * Armillary sphere
 * Armin Joseph Deutsch
 * Armin Otto Leuschner
 * Armin van Buuren
 * Arming plug
 * Armitage III
 * Armiński (crater)
 * Armor (hydrology)
 * Armor (novel)
 * Armstrong (crater)
 * Armstrong Flight Research Center
 * Armstrong Nugget
 * Armstrong limit
 * Army Ballistic Missile Agency
 * Army Map Service
 * Army and Navy, Stoke Newington
 * Arnab Rai Choudhuri
 * Arnaldo Tamayo Méndez
 * Arne Henden
 * Arno Allan Penzias
 * Arno Arthur Wachmann
 * Arno of Salzburg
 * Arnold (crater)
 * Arnold Frutkin
 * Arnold Kohlschütter
 * Arnold Layne
 * Arnold O. Benz
 * Arnold Rimmer
 * Arnold Wolfendale
 * Arnus Vallis
 * Aromatum Chaos
 * Around the Moon
 * AroundMe
 * Arp 104
 * Arp 107
 * Arp 147
 * Arp 166
 * Arp 187
 * Arp 220
 * Arp 240
 * Arp 256
 * Arp 271
 * Arp 272
 * Arp 273
 * Arp 299
 * Arp 302
 * Arp 7
 * Arp 87
 * Arp-Madore 1
 * Arp-Madore 2
 * Arrakis
 * Arrakis Planitia
 * Array Operations Center
 * Array of Low Energy X-ray Imaging Sensors
 * Arrhenius (Martian crater)
 * Arrhenius (lunar crater)
 * Arrival (film)
 * Arrow (MILW train)
 * Arroyo Aguiar (meteorite)
 * Arsenal Design Bureau
 * Arsenal Factory
 * Arsenate-reducing bacteria
 * Arsenic contamination of groundwater
 * Arsenio Hall
 * Arsia Chasmata
 * Arsia Mons
 * Art Bell
 * Art Corner
 * Art Stephenson
 * Artaius
 * Artamonov (crater)
 * Artcraft Theatre
 * Artem'ev (crater)
 * Artemidorus
 * Artemis
 * Artemis (crater)
 * Artemis (novel)
 * Artemis (satellite)
 * Artemis 1
 * Artemis 2
 * Artemis 3
 * Artemis Accords
 * Artemis Chasma
 * Artemis Corona
 * Artemis Project
 * Artemis program
 * Artemis: Spaceship Bridge Simulator
 * Artesian aquifer
 * Arthrobacter
 * Arthrobacter agilis
 * Arthrobacter alpinus
 * Arthrobacter citreus
 * Arthrobacter cryoconiti
 * Arthrobacter flavus
 * Arthrobacter livingstonensis
 * Arthrobacter luteolus
 * Arthrobacter psychrochitiniphilus
 * Arthrobacter psychrolactophilus
 * Arthrobacter roseus
 * Arthrobacter russicus
 * Arthrobacter subterraneus
 * Arthrobacter woluwensis
 * Arthur Adel
 * Arthur Auwers
 * Arthur B. McDonald
 * Arthur Beer
 * Arthur Berson
 * Arthur Bigge, 1st Baron Stamfordham
 * Arthur Butler Phillips Mee
 * Arthur C. Clarke
 * Arthur C. Clarke Institute for Modern Technologies
 * Arthur Compton
 * Arthur Cowper Ranyard
 * Arthur Eddington
 * Arthur Francis O'Donel Alexander
 * Arthur Geoffrey Walker
 * Arthur Hoag
 * Arthur Irvin
 * Arthur Knight (bishop)
 * Arthur L. Day Medal
 * Arthur L. Day Prize and Lectureship
 * Arthur Leonard Schawlow
 * Arthur M. Wolfe
 * Arthur Mostyn Field
 * Arthur Rambaut
 * Arthur Robert Hogg
 * Arthur Roberts (cricketer)
 * Arthur Rudolph
 * Arthur Scott King
 * Arthur Storer
 * Arthur Thomson (fanzines)
 * Arthur Trudeau
 * Arthur W. Conway
 * Arthur W. Saha
 * Arthur Williams McCurdy
 * Arthur Williams Wright
 * Artie P. Hatzes
 * Artificial gravity
 * Artificial gravity in fiction
 * Artificial satellites in retrograde orbit
 * Artificial structures visible from space
 * Artificially Expanded Genetic Information System
 * Artists and Models
 * Arto Oksanen
 * Artsimovich (crater)
 * Artur Kozłowski (speleologist)
 * Artynia Catena
 * Artyom Novichonok
 * Aruna (Hinduism)
 * Arvernus
 * Arwen Colles
 * Ary Abramovich Sternfeld
 * Ary-Mas
 * Aryabhata
 * Aryabhata (crater)
 * Aryabhata (satellite)
 * Aryabhata Award
 * Aryabhata II
 * Aryabhatiya
 * Aryabhatta Research Institute of Observational Sciences
 * Aryamaan – Brahmaand Ka Yodha
 * Aryaman
 * Arzachel (crater)
 * As above, so below
 * Asada (crater)
 * Asagumo (rover)
 * Asajj Ventress
 * Asakaze
 * Asaph Hall
 * Asaph Hall Jr.
 * Asari (crater)
 * Ascendant
 * Ascension (Star Wars novel)
 * Ascension (miniseries)
 * Ascent (novel)
 * Ascent Abort-2
 * Ascent propulsion system
 * Asclepi (crater)
 * Ascraeus Mons
 * Aselsan
 * Asemane shab
 * Asgard (archaea)
 * Asgard (crater)
 * Asgardia
 * Asger Aaboe
 * Asghar Qadir
 * Ash Hollow Formation
 * Ash pond
 * Ash-Shams
 * Ashadha
 * Ashapatti Tamrakar
 * Ashbrook (crater)
 * Ashen light
 * Asher Space Research Institute
 * Ashkharhatsuyts
 * Ashlesha (nakshatra)
 * Ashley Wallbridge
 * Ashraf Choudhary
 * Ashtamangala prasnam
 * Ashtami
 * Ashtar (extraterrestrial being)
 * Ashton Observatory
 * Ashur (god)
 * Ashvin
 * Ashvini
 * Asia Dinosaur Association
 * Asia-Pacific Journal of Atmospheric Sciences
 * Asia-Pacific Space Cooperation Organization
 * AsiaSat
 * AsiaSat 2
 * AsiaSat 5
 * AsiaSat 6
 * AsiaSat 8
 * AsiaStar
 * Asiago Astrophysical Observatory
 * Asiago-DLR Asteroid Survey
 * Asian African Association for Plasma Training
 * Asian Forum of Parliamentarians on Population and Development
 * Asian barred owlet
 * Asif Azam Siddiqi
 * Asimov (crater)
 * Asit Krishna Mukherji
 * Askaryan Radio Array
 * Askrigg Block
 * Asmeret Asefaw Berhe
 * Asociación Argentina Amigos de la Astronomía
 * Asopus Vallis
 * Asp (rocket)
 * Aspect (geography)
 * Aspects of Venus
 * Aspergillus conicus
 * Asperity (faults)
 * Aspersion
 * Asphaltoglaux
 * Asphyxiant gas
 * Aspledon Undae
 * Asraya
 * Assamese Calendar
 * Assassin (Muse song)
 * Assassin of Youth
 * Assassination Nation
 * Assemblers of Infinity
 * Assembly House, Kentish Town
 * Assembly of the International Space Station
 * Assignment Nor'Dyren
 * Assignment: Earth
 * Assimilative capacity
 * Assimitron
 * Assise
 * Assisi (meteorite)
 * Assisted GPS
 * Assiti Shards series
 * Association (astronomy)
 * Association départementale Isère Drac Romanche
 * Association for Women Geoscientists
 * Association for the Ecological Defense of Galicia
 * Association in Scotland to Research into Astronautics
 * Association of Autonomous Astronauts
 * Association of British Dispensing Opticians
 * Association of Environmental Professionals
 * Association of Lunar and Planetary Observers
 * Association of Polar Early Career Scientists
 * Association of Space Explorers
 * Association of Universities for Research in Astronomy
 * Associations of environment journalists
 * Associazione Friulana di Astronomia e Meteorologia
 * Assy McGee
 * Assy-Turgen Observatory
 * Assyrian eclipse
 * Astapus Colles
 * Astarte
 * Astatumen
 * Asteria Regio
 * Asterism (astronomy)
 * Asteroid
 * Asteroid (film)
 * Asteroid Ceres in fiction
 * Asteroid Day
 * Asteroid Redirect Mission
 * Asteroid Terrestrial-impact Last Alert System
 * Asteroid Zoo
 * Asteroid belt
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 * Asteroid family
 * Asteroid impact avoidance
 * Asteroid impact prediction
 * Asteroid laser ablation
 * Asteroid mining
 * Asteroid spectral types
 * Asteroidal water
 * Asteroids in fiction
 * Asteroseismology
 * Asthenosphere
 * Aston (crater)
 * Astra (aerospace)
 * Astra (satellite)
 * Astra 1A
 * Astra 1B
 * Astra 1C
 * Astra 1D
 * Astra 1E
 * Astra 1G
 * Astra 1K
 * Astra 1KR
 * Astra 1L
 * Astra 1M
 * Astra 1N
 * Astra 2A
 * Astra 2B
 * Astra 2C
 * Astra 2D
 * Astra 2E
 * Astra 2F
 * Astra 2G
 * Astra 3A
 * Astra 3B
 * Astra 4A
 * Astra 5A
 * Astra 5B
 * Astra Lost in Space
 * Astraeus
 * Astranis
 * Astraphobia
 * Astrarium
 * Astrarium of Giovanni Dondi dell'Orologio
 * Astrid (satellite)
 * Astrionics
 * Astris (rocket engine)
 * Astris (rocket stage)
 * Astrium
 * Astro Orbiter
 * Astro Space Center (Russia)
 * Astro Warrior
 * Astro-G
 * Astro-Physics
 * Astro-comb
 * AstroGrid
 * AstroSat-2
 * Astrobee
 * Astrobiology
 * Astrobiology (journal)
 * Astrobiology Field Laboratory
 * Astrobiology Magazine
 * Astrobiology Science and Technology for Exploring Planets
 * Astrobiology Society of Britain
 * Astrobiophysics
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 * Astrocartography
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 * Astrochicken
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 * Astrograph
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 * Astrological age
 * Astrological aspect
 * Astrological aspect (Hindu Astrology)
 * Astrological compatibility
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 * Astrology
 * Astrology and astronomy
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 * Astrology and the classical elements
 * Astrology in medieval Islam
 * Astrology of sect
 * Astrology software
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 * Astrometeorology
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 * Astrometry
 * Astromundus
 * Astron (fusion reactor)
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 * Astronarium
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 * Astronaute Club Européen
 * Astronautic Technology Sdn Bhd (ATSB)
 * Astronautical hygiene
 * Astronauts (TV series)
 * Astronauts Day
 * Astronauts Gone Wild
 * Astronaut–politician
 * Astroneer
 * Astronet
 * Astronics Max-Viz
 * Astronomer
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 * Astronomer Royal for Scotland
 * Astronomers Without Borders
 * Astronomia nova
 * Astronomia.pl
 * Astronomica (Manilius)
 * Astronomical Almanac
 * Astronomical Calculation Institute (Heidelberg University)
 * Astronomical Image Processing System
 * Astronomical Institute of Czech Academy of Sciences
 * Astronomical Institute of Slovak Academy of Sciences
 * Astronomical League
 * Astronomical Netherlands Satellite
 * Astronomical Observatory of Cantabria
 * Astronomical Observatory of Capodimonte
 * Astronomical Observatory of Mallorca
 * Astronomical Observatory of Trieste
 * Astronomical Observatory of the University of the Punjab
 * Astronomical Society Ruđer Bošković
 * Astronomical Society of Australia
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 * Astronomical Society of India
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 * Astronomical art
 * Astronomical catalog
 * Astronomical ceiling of Senenmut's Tomb
 * Astronomical chronology
 * Astronomical clock
 * Astronomical clock (Besançon)
 * Astronomical complex
 * Astronomical constant
 * Astronomical day
 * Astronomical filter
 * Astronomical interferometer
 * Astronomical naming conventions
 * Astronomical nutation
 * Astronomical object
 * Astronomical objects and features with Romanian names
 * Astronomical optical interferometry
 * Astronomical radio source
 * Astronomical rings
 * Astronomical seeing
 * Astronomical spectroscopy
 * Astronomical survey
 * Astronomical symbols
 * Astronomical system of units
 * Astronomical unit
 * Astronomical year numbering
 * Astronomische Gesellschaft
 * Astronomische Gesellschaft Katalog
 * Astronomische Nachrichten
 * Astronomische Vereinigung Kärntens
 * Astronomy
 * Astronomy & Astrophysics
 * Astronomy & Geophysics
 * Astronomy (magazine)
 * Astronomy Australia Limited
 * Astronomy Cast
 * Astronomy Centre
 * Astronomy Centre, University of Sussex
 * Astronomy Club: The Sketch Show
 * Astronomy Day
 * Astronomy Domine
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 * Astronomy Letters
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 * Astronomy Photographer of the Year
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 * Astronomy Reports
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 * Astronomy Tower of the Sorbonne
 * Astronomy Visualization Metadata
 * Astronomy and Astrophysics Decadal Survey
 * Astronomy and Computing
 * Astronomy and religion
 * Astronomy and spirituality
 * Astronomy education
 * Astronomy in Chile
 * Astronomy in Serbia
 * Astronomy in the medieval Islamic world
 * Astronomy on Mars
 * Astronomy: Observations and Theories
 * Astrooceanography
 * Astroparticle Physics (journal)
 * Astroparticle physics
 * Astropedology
 * Astrophilately
 * Astrophotography
 * Astrophysical Observatory of Javalambre
 * Astrophysical Virtual Observatory
 * Astrophysical X-ray source
 * Astrophysical fluid dynamics
 * Astrophysical jet
 * Astrophysical maser
 * Astrophysical plasma
 * Astrophysics
 * Astrophysics (journal)
 * Astrophysics Data System
 * Astrophysics Research Institute
 * Astrophysics Source Code Library
 * Astrophysics and Space Science
 * Astrophysics for People in a Hurry
 * Astropulse
 * Astropy
 * Astrosat
 * Astrosat-1000
 * Astroscale
 * Astroscan
 * Astrostatistics
 * Astrovirtel
 * Astérix (satellite)
 * Asymptotic giant branch
 * Asymptotic safety in quantum gravity
 * Asymptotically flat spacetime
 * At the Core
 * At-location mapping
 * Atacama B-Mode Search
 * Atacama Cosmology Telescope
 * Atacama Large Millimeter Array
 * Atacama Pathfinder Experiment
 * Atacama Submillimeter Telescope Experiment
 * Atacama skeleton
 * Ataegina
 * Atagabalin
 * Atanua
 * Atar
 * Atarapa
 * Atarsamain
 * Atea
 * Atelocyanobacterium thalassa
 * Aten
 * Atenism
 * Atget (crater)
 * Athabasca Valles
 * Athena (spacecraft)
 * Athena Coustenis
 * Athena Technologies
 * Athena-Fidus
 * Athene (bird)
 * Athens Ohio Halloween Block Party
 * Athens insomnia scale
 * Athir al-Din al-Abhari
 * Atira asteroid
 * Atlantic (train)
 * Atlantic Biogeographic Region
 * Atlantic Bird
 * Atlantic Express and Pacific Express
 * Atlantic Geology
 * Atlantic Ocean
 * Atlantic Shield
 * Atlantic coastal plain
 * Atlantis Chaos
 * Atlantis basin
 * Atlas (crater)
 * Atlas (moon)
 * Atlas (rocket family)
 * Atlas (star)
 * Atlas 3d survey
 * Atlas Coelestis
 * Atlas G
 * Atlas H
 * Atlas I
 * Atlas Mountains
 * Atlas of Peculiar Galaxies
 * Atlas-Able
 * Atmakaraka
 * Atmosphere
 * Atmosphere and Telescope Simulator
 * Atmosphere of Earth
 * Atmosphere of Jupiter
 * Atmosphere of Mars
 * Atmosphere of Mercury
 * Atmosphere of Pluto
 * Atmosphere of Titan
 * Atmosphere of Triton
 * Atmosphere of Uranus
 * Atmosphere of Venus
 * Atmosphere of the Moon
 * Atmosphere-Space Interactions Monitor
 * Atmosphere-Space Transition Region Explorer
 * Atmospheric Chemistry Suite
 * Atmospheric Chemistry and Physics
 * Atmospheric Circulation Reconstructions over the Earth
 * Atmospheric Dispersion Modelling Liaison Committee
 * Atmospheric Environment
 * Atmospheric Measurement Techniques
 * Atmospheric Model Intercomparison Project
 * Atmospheric Neutral Density Experiment
 * Atmospheric Radiation Measurement Climate Research Facility
 * Atmospheric Reentry Demonstrator
 * Atmospheric Reentry Experimental Spaceplane
 * Atmospheric Research
 * Atmospheric Science Letters
 * Atmospheric chemistry
 * Atmospheric chemistry observational databases
 * Atmospheric correction
 * Atmospheric diffraction
 * Atmospheric dispersion modeling
 * Atmospheric duct
 * Atmospheric dynamo
 * Atmospheric entry
 * Atmospheric escape
 * Atmospheric infrared sounder
 * Atmospheric lidar
 * Atmospheric methane
 * Atmospheric mining
 * Atmospheric model
 * Atmospheric pressure
 * Atmospheric pressure discharge
 * Atmospheric radiative transfer codes
 * Atmospheric reanalysis
 * Atmospheric refraction
 * Atmospheric science
 * Atmospheric sounding
 * Atmospheric super-rotation
 * Atmospheric theatre
 * Atmospheric waveguide
 * Atmospheric-pressure plasma
 * Atoka meteorite
 * Atom Heart Mother (suite)
 * Atom Squad
 * Atom interferometer
 * Atomic Age (comics)
 * Atomic Bomberman
 * Atomic Clock Ensemble in Space
 * Atomic Punk
 * Atomic Robo
 * Atomic Trades and Labor Council
 * Atomic absorption spectroscopy
 * Atomic and molecular astrophysics
 * Atomic battery
 * Atomic emission spectroscopy
 * Atomic hydrogen welding
 * Atomic spectroscopy
 * Atopococcus tabaci
 * Atrapadas
 * Atsuo Asami
 * Atsushi Sugie
 * Atsushi Takahashi
 * Attack of the Cybermen
 * Attack of the Giant Leeches
 * Attack of the Killer App
 * Attack of the Saucerman
 * Attack of the Zolgear
 * Attar (god)
 * Attenuated total reflectance
 * Attenuation coefficient
 * Attic calendar
 * Attilio Colacevich
 * Attilio Palatini
 * Attitude and heading reference system
 * Attitude control
 * Attitude indicator
 * Attophysics
 * Attraction (film)
 * Atum
 * Atutahi
 * Atwood (crater)
 * Au clair de la lune
 * AubieSat-1
 * Aubrey (producer)
 * Aubrey Burl
 * Aubrey holes
 * Aubrite
 * Audi Lunar quattro
 * Audouin Dollfus
 * Audrey C. Delsanti
 * Audrey Napoleon
 * Aufeis
 * Auger effect
 * Auger electron spectroscopy
 * Augmented Reality Sandtable
 * Augmented Satellite Launch Vehicle
 * August Derleth
 * August Ferdinand Möbius
 * August Hagenbach
 * August Herman Pfund
 * August Kopff
 * August Seydler
 * August Underground
 * August Underground's Mordum
 * August Underground's Penance
 * August von Jilek
 * Augusta family
 * Auguste Charlois
 * Augustine Committee
 * Augusto Testa
 * Auki (crater)
 * Aunt Sally
 * Auqakuh Vallis
 * Aura (satellite)
 * Aurelia (crater)
 * Aureola
 * Auriga (constellation)
 * Auriga in Chinese astronomy
 * Aurigids
 * Aurin
 * Auron (character)
 * Aurora
 * Aurora (mythology)
 * Aurora (novel)
 * Aurora (train)
 * Aurora Borealis Express
 * Aurora Max
 * Aurora Space Station
 * Aurora of November 17, 1882
 * Aurora programme
 * Aurora: The Secret Within
 * Aurorae Chaos
 * Aurorae Sinus
 * Auroral chorus
 * Auroral kilometric radiation
 * Auseklis
 * Ausonia Mensa
 * Ausonia Montes
 * Auspace
 * Auspicious dreams in Jainism
 * Austere Human Missions to Mars
 * Austin Creek
 * Austin Glen Member
 * Austin Powers: The Spy Who Shagged Me
 * Austral Launch Vehicle
 * Austral pygmy owl
 * Australasian Hydrographic Society
 * Australasian strewnfield
 * Australe Montes
 * Australia After Dark
 * Australia Mars Analog Research Station
 * Australia Telescope Compact Array
 * Australia Telescope National Facility
 * Australia on the Map
 * Australian Aboriginal Astronomy Project
 * Australian Aboriginal astronomy
 * Australian Dung Beetle Project
 * Australian Geographer
 * Australian Journal of Earth Sciences
 * Australian Shield
 * Australian Society of Soil Science Incorporated
 * Australian Soil Classification
 * Australian Space Agency
 * Australian Space Board
 * Australian Space Council
 * Australian Space Office
 * Australian Space Research Institute
 * Australian Square Kilometre Array Pathfinder
 * Australian and New Zealand Map Society
 * Australian flying fox die-offs
 * Australian pub
 * Australis-OSCAR 5
 * Australite
 * Austria
 * Austrian Journal of Earth Sciences
 * Austrian Lightning Detection & Information System
 * Austrian Space Agency
 * Austrian Space Forum
 * Authigenesis
 * Auto Train
 * Autobiogeography
 * Autochem
 * Autochthon (geology)
 * Autocorrelator
 * Autoguider
 * Autolycus (crater)
 * Automated Data Inquiry for Oil Spills
 * Automated Flight Following
 * Automated Patrol Telescope
 * Automated Planet Finder
 * Automated Transfer Vehicle
 * Automated mineralogy
 * Automated weather map display
 * Automatic Dependent Surveillance–Broadcast
 * Automatic Ground Collision Avoidance System
 * Automatic Independent Surveillance – Privacy
 * Automatic behavior
 * Automatic direction finder
 * Automatic picture transmission
 * Automatic target recognition
 * Automatic vehicle location
 * Automatism (toxicology)
 * Automaton Rover for Extreme Environments
 * Autometric
 * Automotive navigation system
 * Automotive oil recycling
 * Autonoe (moon)
 * Autonomous Landing Hazard Avoidance Technology
 * Autonomous Nanosatellite Guardian for Evaluating Local Space
 * Autonomous spaceport drone ship
 * Autonomous telepresence
 * Autopia
 * Autopilot
 * Autosomal dominant nocturnal frontal lobe epilepsy
 * Auwers (crater)
 * Auzout (crater)
 * Aušrinė
 * Av3k
 * Available water capacity
 * Avak crater
 * Avalanche breakdown
 * Avanhandava (meteorite)
 * Avastha (Hindu astrology)
 * Avatar (2009 film)
 * Avatar (franchise)
 * Avatar (spacecraft)
 * Avatar 2
 * Avatar 3
 * Avatar Flight of Passage
 * Avatar: Music from the Motion Picture
 * Avatea
 * Ave Satani
 * Avedon Carol
 * Avempace
 * Avenged (2013 American film)
 * Avenger (1981 video game)
 * Avenger (TV series)
 * Avengers: Age of Ultron
 * Avengers: Endgame
 * Avengers: Infinity War
 * Avenue 5
 * Avernus Colles
 * Averroes
 * Averted vision
 * Avery (crater)
 * Avi Loeb
 * Avian sleep
 * Avicenna
 * Avicenna (crater)
 * Avidyne Entegra
 * Avik Bhattacharya
 * Avinash Deshpande
 * Avionics
 * Avionics Full-Duplex Switched Ethernet
 * Avionics software
 * Avishai Dekel
 * Avizo (software)
 * Avogadro (crater)
 * Avondale Shipyard
 * Avram Davidson
 * Avulsion (river)
 * Awake (TV series)
 * Awards and decorations of the National Oceanic and Atmospheric Administration
 * Awards and emblems of the Ministry of Defence of the Russian Federation
 * Awarua Tracking Station
 * Awasis
 * Away (TV series)
 * Awilix
 * Awonawilona
 * Axe (film)
 * Axel Firsoff
 * Axel Möller
 * Axel Nielsen
 * Axel Roth
 * Axel Timmermann
 * Axeman (film)
 * Axial precession
 * Axial tilt
 * Axinite-(Mg)
 * Axino
 * Axiom Orbital Segment
 * Axiom Space
 * Axion
 * Axion Dark Matter Experiment
 * Axis mundi
 * Axis of evil (cosmology)
 * Ay Ata
 * Aya: Imagined Autobiography
 * Ayanāṃśa
 * Aydar Akhatov
 * Ayr Pavilion
 * Ayron IV
 * Ayvu Rapyta
 * Ayyub (crater)
 * Azati Prime
 * Azazel (Supernatural)
 * Azerbaijan
 * Azerbaijan National Aerospace Agency
 * Azerbaijan Society of Petroleum Geologists
 * Azercosmos
 * Azersky
 * Azerspace-1/Africasat-1a
 * Azerspace-2
 * Azimuth
 * Azo violet
 * Azonal
 * Azophi (crater)
 * Azotti
 * Aztec New Year
 * Aztec Theatre (San Antonio)
 * Aztec calendar
 * Azuara impact structure
 * Azur (satellite)
 * Azure Dragon
 * Aśvaghosa (crater)
 * Aṣ-Ṣaidanānī
 * B 018
 * B Aquarii
 * B Carinae
 * B Centauri
 * B Cygni
 * B Persei
 * B Velorum
 * B movies (exploitation boom)
 * B&G
 * B(e) star
 * B-type asteroid
 * B-type main-sequence star
 * B. Codanayaguy
 * B. V. Raman
 * B. V. Sreekantan
 * B.C. Butcher
 * B.Traits
 * B2FH paper
 * B330
 * B612 Foundation
 * BA 2100
 * BAC Mustard
 * BAITSSS
 * BARREL
 * BASA Film
 * BAT99-98
 * BATES
 * BAe Dynamics
 * BB Doradus
 * BB Phoenicis
 * BBC Sky at Night
 * BC Canis Minoris
 * BC Cygni
 * BD Camelopardalis
 * BD Phoenicis
 * BD+00 316
 * BD+03 2562
 * BD+14 4559
 * BD+17°3248
 * BD+20 2457
 * BD+20 594b
 * BD+20°307
 * BD+40°4210
 * BD+43 3654
 * BD+48 740
 * BD+60°2522
 * BD-07 436
 * BD-08°2823 b
 * BD-08°2823 c
 * BD-10°3166 b
 * BD-11 4672
 * BDF-3299
 * BDF-521
 * BD−08°2823
 * BD−10°3166
 * BD−17 63
 * BD−17 63 b
 * BD−22 5866
 * BE Camelopardalis
 * BENGAL (project)
 * BES III
 * BES-5
 * BESS (experiment)
 * BF Antliae
 * BFG (weapon)
 * BFI IMAX
 * BFI Southbank
 * BG Crucis
 * BG Geminorum
 * BGM-75 AICBM
 * BGS Groundhog Desktop
 * BGUSAT
 * BH Crucis
 * BHR 71
 * BHUTAN-1
 * BI 253
 * BI Cygni
 * BICEP and Keck Array
 * BILSAT-1
 * BINGO (telescope)
 * BIOMASS
 * BIOPAN
 * BIOS-3
 * BIRD (satellite)
 * BK Camelopardalis
 * BKL singularity
 * BL Boötis
 * BL Crucis
 * BL Herculis variable
 * BL Lacertae
 * BL Lacertae object
 * BL Telescopii
 * BLAST (telescope)
 * BLITS
 * BLUEsat UNSW
 * BM Andromedae
 * BMX Bandits (film)
 * BN Camelopardalis
 * BO Carinae
 * BO Microscopii
 * BOLAS (spacecraft)
 * BOOMERanG experiment
 * BOOTES
 * BOR-4
 * BOR-5
 * BOSS Great Wall
 * BOSS4GMES
 * BP Boötis
 * BP Circini
 * BP Crucis
 * BP Structure
 * BPM 37093
 * BQ Octantis
 * BRAC Onnesha
 * BRICSat-2
 * BRICSat-P
 * BRITE
 * BRRISON
 * BRUIE
 * BSAT-1a
 * BSAT-1b
 * BSAT-2a
 * BSAT-2b
 * BSAT-2c
 * BSAT-3a
 * BSAT-3b
 * BSAT-3c
 * BSAT-4a
 * BSAT-4b
 * BSSN formalism
 * BSTAR
 * BT Monocerotis
 * BT MyPlace
 * BTA-6
 * BTZ black hole
 * BU Canis Minoris
 * BU Crucis
 * BV Centauri
 * BW Vulpeculae
 * BX Andromedae
 * BX Boötis
 * BX Circini
 * BX442
 * BY Draconis
 * BY Draconis variable
 * BYU Mars Rover
 * BZhRK Barguzin
 * Ba'het Corona
 * BaadAsssss Cinema
 * Baade (crater)
 * Baade's Window
 * Baade-Wesselink method
 * Baal
 * Baal Hammon
 * Babak Amin Tafreshi
 * Babakin (Martian crater)
 * Babakin (lunar crater)
 * Babakin Space Centre
 * Babbage (crater)
 * Babcock (crater)
 * Babcock Model
 * Babette's
 * Babinet's principle
 * Babinet–Soleil compensator
 * Baby Boom Galaxy
 * Baby Love (1968 film)
 * Baby You're a Haunted House
 * Babydoll
 * Babygrow
 * Babylon 5
 * Babylon 5: In the Beginning
 * Babylon's Ashes
 * Babylonian astrology
 * Babylonian astronomical diaries
 * Babylonian astronomy
 * Babylonian calendar
 * Babylonian star catalogues
 * Babylonokia
 * Babysitter Massacre
 * Bach (crater)
 * Bachelor of Environmental Science
 * Bacillus odysseyi
 * Bacillus pumilus
 * Bacillus safensis
 * Bacillus subtilis
 * Back (crater)
 * Back Track
 * Back in the Red
 * Back on the Streets (song)
 * Back to Reality (Red Dwarf)
 * Back to School with Franklin
 * Back to Sleep (song)
 * Back to the Moon
 * Backblast area
 * Backdraft 2
 * Background (astronomy)
 * Background radiation
 * Backlash (Star Wars novel)
 * Backlund (crater)
 * Backlundtoppen
 * Backpacker (video game series)
 * Backshore
 * Backstaff
 * Backtesting
 * Backwards (Red Dwarf)
 * Backyard Worlds
 * Baco (crater)
 * Bacolor (crater)
 * Bacterial circadian rhythm
 * Bacteriorhodopsin
 * Bacubirito meteorite
 * Bad Astronomy
 * Bad Boy Bill
 * Bad Boy Joe
 * Bad Channels
 * Bad Girls Go to Hell
 * Bad Taste
 * Bad Wolf
 * Baden-Powell's unilens
 * Baden-Württemberg 1
 * Badge of Infamy
 * Badges of the United States Space Force
 * Badi Dooooor Se Aaye Hai
 * Badlands
 * Badlands Guardian
 * Badlands Observatory
 * Badnjak (Serbian)
 * Badr-1
 * Badr-1 (rocket)
 * Badr-4
 * Badr-B
 * Baerbel Lucchitta
 * Baer–Babinet law
 * Baetic System
 * Baetylus
 * Bagatelle
 * Bagger–Lambert–Gustavsson action
 * Bagnall Beach Observatory
 * Bagnold Dunes
 * Bagnold formula
 * Bagnoud Observatory
 * Baha' al-din al-'Amili
 * Bahcall–Wolf cusp
 * Bahloo
 * Bahnwärter Thiel
 * Bahram Vallis
 * Bahtinov mask
 * Baháʼí calendar
 * Baiheliang
 * Baikal (rocket booster)
 * Baikal Deep Underwater Neutrino Telescope
 * Baikonur Cosmodrome
 * Baikonur Cosmodrome Site 109
 * Baikonur Cosmodrome Site 110
 * Baikonur Cosmodrome Site 200
 * Baikonur Cosmodrome Site 250
 * Baikonur Cosmodrome Site 31
 * Baikonur Cosmodrome Site 41
 * Baikonur Cosmodrome Site 45
 * Baikonur Cosmodrome Site 81
 * Baikonur Cosmodrome Site 90
 * Baillaud (crater)
 * Bailly (crater)
 * Baily (crater)
 * Baily's beads
 * Baker Observatory
 * Bakhchisaray Cave Monastery
 * Bakhuysen (crater)
 * Baking Bad
 * Baksan Neutrino Observatory
 * Baktun
 * Baku (mythology)
 * Bal Bullier
 * Bal Tabarin (Paris)
 * Bal des Quat'z'Arts
 * Bala Fault
 * Balagtas (crater)
 * Balance (ability)
 * Balance of Power (Red Dwarf)
 * Balance of system
 * Balanchine (crater)
 * Balancing lake
 * Balandin (crater)
 * Balankanche
 * Balarishta
 * Balbinot 1
 * Balboa (lunar crater)
 * Balch (crater)
 * Baldassarre Capra
 * Baldet (Martian crater)
 * Baldet (lunar crater)
 * Baldwin effect (astronomy)
 * Balkhash Radar Station
 * Ball (crater)
 * Ball Aerospace & Technologies
 * Ball State University Observatory
 * Ball culture
 * Ball lightning
 * Ball-pen probe
 * Ballistic Missile Defense Organization
 * Ballistic capture
 * Ballistic missile
 * Ballmastrz: 9009
 * Ballochroy
 * Balloon Experiments with Amateur Radio
 * Balloon satellite
 * Balloon-borne telescope
 * Ballooning instability
 * Balls 8
 * Balls Cabaret
 * Ballute
 * Balmer (crater)
 * Balmer jump
 * Balmer series
 * Balnearium lithotrophicum
 * Balrog Macula
 * Balsamic Moon
 * Balsas screech owl
 * Baltic Sea anomaly
 * Baltis Vallis
 * Baltisk
 * Baluba mythology
 * Balzac (crater)
 * Balzan Prize
 * Bam (crater)
 * Bama (soil)
 * Bamahenge
 * Bambang Hidayat
 * Bamberg (crater)
 * Bamboo Club
 * Bamboo Gods and Iron Men
 * Bamboo cannon
 * Banachiewicz (crater)
 * Bancroft (crater)
 * Bancroft Award
 * Band emission
 * Band head
 * Band-bellied owl
 * Bandhana yoga
 * Bandits (video game)
 * Bandwidth smearing
 * Banesh Hoffmann
 * Bang Bang Busters
 * Bang Face
 * Bang snaps
 * Bang! Gunship Elite
 * Bangabandhu Satellite-1
 * Bangabandhu Sheikh Mujibur Rahman Novo Theatre
 * Bangalore Astronomical Society
 * Bangkok Planetarium
 * Bangweulu Block
 * Banibrata Mukhopadhyay
 * Banig
 * Bank (geography)
 * Bank Night
 * Bank erosion
 * Banner of the Stars
 * Bantha
 * Banting (crater)
 * Banwell Caves
 * Banxing
 * Banū Mūsā
 * Baptism by fire
 * Baptistina family
 * Bapudeva Sastri
 * Bar (river morphology)
 * Bar Harbor Express
 * Bar billiards
 * Barabashov (crater)
 * Barachois
 * Baranauskas (crater)
 * Barbara A. Williams
 * Barbara Askins
 * Barbara Bekins
 * Barbara Carroll
 * Barbara Cohen (scientist)
 * Barbara Crawford Johnson
 * Barbara Ercolano
 * Barbara J. Thompson
 * Barbara Kegerreis Lunde
 * Barbara M. Middlehurst
 * Barbara Maher
 * Barbara Morgan
 * Barbara Paulson
 * Barbara Sherwood Lollar
 * Barbara Tedlock
 * Barbara Wienecke
 * Barbarella (film)
 * Barbarella (rocket)
 * Barbexaclone
 * Barbie Dreams
 * Barbie: Star Light Adventure
 * Barbier (crater)
 * Barbital
 * Barbiturate
 * Barbiturate dependence
 * Barbiturate overdose
 * Barbituric acid
 * Barcade
 * Barcelona Moon Team
 * Barcelona astrolabe
 * Barclay Shaw
 * Bare Behind Bars
 * Bare Knuckles
 * Bare-legged owl
 * Bareket Observatory
 * Barents–Kara Ice Sheet
 * Barfield (company)
 * Baritosis
 * Barium
 * Barium star
 * Barkla (crater)
 * Barlow Memorial Medal
 * Barlow Planetarium
 * Barlowe's Guide to Extraterrestrials
 * Barma (crater)
 * Barmbrack
 * Barn door tracker
 * Barn-owl
 * Barna Hedenhös uppfinner julen
 * Barnaba Oriani
 * Barnacle Bill (Martian rock)
 * Barnard (Martian crater)
 * Barnard (lunar crater)
 * Barnard 147
 * Barnard 150
 * Barnard 203
 * Barnard 30
 * Barnard 68
 * Barnard Astronomical Society
 * Barnard Catalogue
 * Barnard Observatory
 * Barnard's Loop
 * Barnard's Star
 * Barnard's Star b
 * Barnes–Hut simulation
 * Barney (crater)
 * Barney Josephson
 * Barney and Betty Hill
 * Barnstar
 * Barnum effect
 * Barnumbirr
 * Barnyard Blast: Swine of the Night
 * Baro (crater)
 * Barocius (crater)
 * Barometric formula
 * Baron Munchausen's Narrative of his Marvellous Travels and Campaigns in Russia
 * Barramundi orogeny
 * Barranca de Oblatos
 * Barred irregular galaxy
 * Barred spiral galaxy
 * Barreira do Inferno Launch Center
 * Barren sign
 * Barrier island
 * Barrier layer (oceanography)
 * Barrier ridge
 * Barringer (lunar crater)
 * Barringer Medal
 * Barrow (crater)
 * Barry Barish
 * Barry E. Wilmore
 * Barry G. Clark
 * Barry Goldwater
 * Barry Harris (Canadian musician)
 * Barry N. Malzberg
 * Barry Sonnenfeld
 * Barsoom
 * Barsoomian language
 * Barsukov (crater)
 * Bart Bok
 * Bart Claessen
 * Bart Sibrel
 * Bart's Comet
 * Bartels (crater)
 * Barth (crater)
 * Barth Netterfield
 * Bartholomaeus Pitiscus
 * Bartholomew of Parma
 * Bartholomäus Scultetus
 * Bartol Research Institute
 * Bartolomeo Pollastri
 * Barton (crater)
 * Barton Beds
 * Barton Creek Cave
 * Barton Cylinder
 * Bartosz Brenes
 * Bartók (crater)
 * Baruch Samuel Blumberg
 * Barycenter
 * Barycentric Coordinate Time
 * Barycentric Dynamical Time
 * Barycentric Julian Date
 * Barycentric celestial reference system
 * Baryogenesis
 * Baryon acoustic oscillations
 * Baryon asymmetry
 * Baryonic dark matter
 * Bas Lansdorp
 * Basal sliding
 * Basaltic andesite
 * Basanite
 * Basanta Kumar Sahu
 * Base 603
 * Base level
 * Base-cation saturation ratio
 * Base-richness
 * Baseball rubbing mud
 * Baseflow
 * Baseflow residence time
 * Baseline (sea)
 * Basement Jaxx
 * Basement apartment
 * Basement high
 * Bashiru Ademola Raji
 * Bashō (crater)
 * Basil Gogos
 * Basilia fletcheri
 * Basin Groups
 * Basin and Range Province
 * Basin and range topography
 * Bassinet
 * Bassorah Fossa
 * Bastet
 * Bastien Lecouffe-Deharme
 * Bastille Day event
 * Baszkówka (meteorite)
 * Bat
 * Bat (heraldry)
 * Bat Conservation International
 * Bat Conservation Trust
 * Bat SARS-like coronavirus WIV1
 * Bat World Sanctuary
 * Bat and trap
 * Bat bomb
 * Bat bridge
 * Bat bug
 * Bat detector
 * Bat festival
 * Bat fly
 * Bat mumps orthorubulavirus
 * Bat species identification
 * Bat virome
 * Bat1K
 * Bathochromic shift
 * Bathometer
 * Bathurst Inlet (rock)
 * Bathymetric chart
 * Bathymetry
 * Batman v Superman: Dawn of Justice
 * Batman: Arkham Knight
 * Batman: The Dark Knight Returns (film)
 * Batsugun
 * Batteries Not Included
 * Batteries in space
 * Battle Angel Alita: Mars Chronicle
 * Battle Beyond the Stars
 * Battle Beyond the Sun
 * Battle Cat
 * Battle Clash
 * Battle Planet
 * Battle at the Binary Stars
 * Battle for Andromeda
 * Battle for Terra
 * Battle in Outer Space
 * Battle of Ager Falernus
 * Battle of Asakai
 * Battle of Cape Esperance
 * Battle of Cape Matapan
 * Battle of Cephalonia
 * Battle of Kapetron
 * Battle of Katasyrtai
 * Battle of Lubartów (1863)
 * Battle of Lubrze
 * Battle of Mount Tumbledown
 * Battle of Otterburn
 * Battle of Pliska
 * Battle of Port Arthur
 * Battle of Quilacura
 * Battle of Ray
 * Battle of Savo Island
 * Battle of Sept-Îles
 * Battle of Sinhagad
 * Battle of Skopje
 * Battle of Sphacteria
 * Battle of Suoi Bong Trang
 * Battle of Tippecanoe
 * Battle of Torches
 * Battle of Vella Lavella (naval)
 * Battle of Wauhatchie
 * Battle of Xinfeng
 * Battle of the Beanfield
 * Battle of the Colline Gate (82 BC)
 * Battle of the Milvian Bridge
 * Battle of the Teutoburg Forest
 * Battle of the Worlds
 * BattleSphere
 * Battlecruiser 3000AD
 * Battlefield Airborne Communications Node
 * Battlefield Earth (film)
 * Battlefield Earth (novel)
 * Battlemorph
 * Battles Lost and Won
 * Battleship (rocketry)
 * Battlestar Columbia
 * Battlestar Galactica
 * Battlestar Galactica (1978 TV series)
 * Battlestar Galactica (2003 video game)
 * Battlestar Galactica (2004 TV series)
 * Battlestar Galactica (fictional spacecraft)
 * Battlestar Galactica Online
 * Battletoads (Game Boy video game)
 * Battletoads (video game)
 * Battlezone (1998 video game)
 * Bautz–Morgan classification
 * Bauxite
 * Bavarian State Office for Survey and Geoinformation
 * Bay
 * Bay Restaurant Group
 * Bay de Verde Formation
 * Bay mud
 * Bay owl
 * Bayer (crater)
 * Bayer designation
 * Bayfordbury
 * Bayfordbury Observatory
 * Baymouth bar
 * Baynes (soil)
 * Bayou
 * Bays Mountain Park
 * Bdelloidea
 * Be Forever Yamato
 * Be star
 * Be/X-ray binary
 * Bea Mahaffey
 * Beach Abort
 * Beach Ball
 * Beach Blanket Babylon
 * Beach Fever
 * Beach advisory
 * Beach cusps
 * Beach evolution
 * Beach nourishment
 * Beach ridge
 * Beachrock
 * Beachy Head West
 * Beacon Limestone Formation
 * Beacon Theatre (New York City)
 * Beagle (crater)
 * Beagle 2
 * Beagle 3
 * Beagle Rupes
 * Beaivi
 * Beal Aerospace
 * Beals (crater)
 * Beam origin concept
 * Beam park
 * Beam-powered propulsion
 * Bear Creek (meteorite)
 * Bear Valley Strip Mine
 * Bear at Home
 * Beardmore orogeny
 * Beardsley meteorite
 * Beast Man
 * Beat Girl
 * Beat cinema
 * Beatrice M. Tinsley Prize
 * Beatrice Tinsley
 * Beatriz Barbuy
 * Beaumont (crater)
 * Beauties of the Night
 * Beauties of the Night (2016 film)
 * Beauty (Once Upon a Time)
 * Beauty and the Beast (1934 film)
 * Beauty and the Beast (1946 film)
 * Beauty and the Beast Live on Stage
 * Beauvais astronomical clock
 * Beaver Hills (Alberta)
 * Beaverhead crater
 * Bebhionn (moon)
 * Bechet (crater)
 * Beckett (crater)
 * Becklin–Neugebauer Object
 * Becquerel (Martian crater)
 * Becquerel (lunar crater)
 * Becquerel Prize
 * Bed
 * Bed base
 * Bed frame
 * Bed hangings
 * Bed jacket
 * Bed load
 * Bed material load
 * Bed rest
 * Bed sheet
 * Bed size
 * Bed skirt
 * Bed warmer
 * Bed-making
 * Beddgelert Fault
 * Bedding
 * Bedding ceremony
 * Beddit
 * Bedford Hours
 * Bedford Level experiment
 * Bediasite
 * Bedin I
 * Bedlam in Paradise
 * Bedout
 * Bedrock
 * Bedroom
 * Bedside sleeper
 * Bedtime
 * Bedtime story
 * Bedwetting alarm
 * Bee-Man
 * BeeSat-1
 * Beef House
 * Beehive Cluster
 * Beelzebub
 * Beer (Martian crater)
 * Beer (lunar crater)
 * Beer Quarry Caves
 * Beerenberg
 * Beersel Hills Observatory
 * Beer–Lambert law
 * Beestonian stage
 * Beethoven (crater)
 * Beethoven Burst (GRB 991216)
 * Before Eden
 * Before I Wake (2016 film)
 * Before Mars (novel)
 * Before Present
 * Before and After (Star Trek: Voyager)
 * Beggars Night
 * Begin (video game)
 * Begoña Vila
 * Behaim (crater)
 * Behavioral geography
 * Behavioral modeling in hydrology
 * Behavioral sleep medicine
 * Behenian fixed star
 * Behind the Curve
 * Behind the Nudist Curtain
 * Behlen Observatory
 * Behram (crater)
 * BeiDou
 * BeiDou-3 M1
 * Beige Planet Mars
 * Beijerinck (crater)
 * Beijing Aerospace Flight Control Center
 * Beijing Ancient Observatory
 * Beijing Anomaly
 * Beijing Astronomical Observatory
 * Beijing Planetarium
 * Beijing Schmidt CCD Asteroid Program
 * Bejan Daruwalla
 * Bek (crater)
 * Beketov (crater)
 * Bel decomposition
 * Bel'kovich (crater)
 * BelKA
 * Bela Lugosi's Dead
 * Belarus
 * Belarus Space Agency
 * Belatucadros
 * Belchen System
 * Belenus
 * Belgian marble
 * Belgrade Observatory
 * Belgrade Planetarium
 * Believe... In Holiday Magic
 * Believe... There's Magic in the Stars
 * Belinda (moon)
 * Belinda Wilkes
 * Belinskij (crater)
 * Belinski–Zakharov transform
 * Belintersat-1
 * Bell (crater)
 * Bell (satellite)
 * Bell Eagle Eye
 * Bell Inn, Enfield
 * Bell Island Group
 * Bell Museum of Natural History
 * Bell X-14
 * Bella A. Burnasheva
 * Bellas de noche
 * Bellatrix
 * Bellatrix Aerospace
 * Belle Vue Quarry
 * Bellini (crater)
 * Bellinsgauzen (crater)
 * Bello (crater)
 * Bellot (crater)
 * Bellsbank meteorite
 * Belmont Cave
 * Belogradchik Observatory
 * Belopol'skiy (crater)
 * Belt of Venus
 * Belterra, Pará
 * Belus (Babylonian)
 * Belushi's
 * Belyaev (crater)
 * Belz (crater)
 * Bem (Star Trek: The Animated Series)
 * Ben 10 Alien Force: Vilgax Attacks
 * Ben Bova
 * Ben Bussey
 * Ben Carlin
 * Ben Cooper, Inc.
 * Ben Franklin (PX-15)
 * Ben Gascoigne
 * Ben Goertzel
 * Ben Liebrand
 * Ben Mayer
 * Ben Moore (astrophysicist)
 * Ben Shaw (DJ)
 * Ben Watt
 * Bench (crater)
 * Bench (geology)
 * Bench Crater meteorite
 * Benchtop nuclear magnetic resonance spectrometer
 * Bendegó meteorite
 * Benedetta Ciardi
 * Benedict (crater)
 * Benedict Jablonski
 * Benedict Sestini
 * Benedict Zuckermann
 * Benedum Center
 * Benefic planet
 * Benefield Anechoic Facility
 * Benefits of space exploration
 * Benesi–Hildebrand method
 * Bengal Fan
 * Bengt Berg (ornithologist)
 * Bengt Edlén
 * Bengt Gustafsson (astronomer)
 * Bengt Strömgren
 * Bengt Westerlund
 * Benjamin Apthorp Gould
 * Benjamin Boss
 * Benjamin Franklin Keith
 * Benjamin Jekhowsky
 * Benjamin Markarian
 * Benjamin Peirce
 * Benjamin Scott
 * Benjamin Spilsbury
 * Benjamin West (astronomer)
 * Benjamin Zuckerman
 * Benmore Peak
 * Benmoreite
 * Bennett Hill (lunar mountain)
 * Benny Benassi
 * Benny Ninja
 * Benny's Bar bombing
 * Benoit (crater)
 * Benson Island, British Columbia
 * Bentazepam
 * Benthic boundary layer
 * Bentley's paradox
 * Benton Fault
 * Benton fireworks disaster
 * Benton meteorite
 * Benzobarbital
 * Benzodiazepine
 * Benzylbutylbarbiturate
 * BepiColombo
 * BeppoSAX
 * Berdella
 * Beresheet
 * Beresheet 2
 * Berezin integral
 * Bergamo Cathedral
 * Bergelmir (moon)
 * Bergen School of Meteorology
 * Berghain
 * Bergisch Gladbach Observatory
 * Bergman (crater)
 * Bergschrund
 * Bergstrand (crater)
 * Berkel (crater)
 * Berkeley Arms, Purton
 * Berkeley SETI Research Center
 * Berkeley School of Latin Americanist Geography
 * Berkeley-Illinois-Maryland Association
 * Berkner (crater)
 * Berkshire (soil)
 * Berkut spacesuit
 * Berlage (crater)
 * Berlandiera lyrata
 * Berlin Institute for Population and Development
 * Berlin Observatory
 * Berlin scientific balloon flights
 * Berliner (train)
 * Berliner Astronomisches Jahrbuch
 * Berlioz (crater)
 * Bermuda Atlantic Time-series Study
 * Bermuda saw-whet owl
 * Bernal sphere
 * Bernard (crater)
 * Bernard A. Harris Jr.
 * Bernard Carr
 * Bernard F. Burke
 * Bernard F. Schutz
 * Bernard Foing
 * Bernard Haisch
 * Bernard John Smith
 * Bernard Lovell
 * Bernard Lyot Telescope
 * Bernard Mills
 * Bernard Pagel
 * Bernard Palissy
 * Bernard R. Goldstein
 * Bernard Werber
 * Bernhard Dawson
 * Bernhard Eitel
 * Bernhard Schmidt
 * Bernhard Walther
 * Bernhard von Lindenau
 * Bernhard von Wüllerstorf-Urbair
 * Bernie Fanaroff
 * Bernie Katz
 * Bernini (crater)
 * Bernoulli (crater)
 * Bernstein–Greene–Kruskal modes
 * Berossus
 * Berosus (crater)
 * Berruornis
 * Berry (crater)
 * Berserker (novel series)
 * Berserker Raids
 * Bert I. Gordon
 * Bert van Sprang
 * Berth (sleeping)
 * Bertha Rogers
 * Berthold Ribbentrop
 * Bertil Lindblad
 * Bertram Brockhouse
 * Bertrand Meigh Peek
 * Bertrand's theorem
 * Berw Fault
 * Beryl H. Potter
 * Beryllium-8
 * Berzelius (crater)
 * Besançon Astronomical Observatory
 * Bessarion (crater)
 * Bessel (crater)
 * Besselian elements
 * Besser Museum for Northeast Michigan
 * Best Friends (1975 film)
 * Best Little Horror House in Langley Falls
 * Best available technology
 * Best management practice for water pollution
 * Bestial sign
 * Bestla (moon)
 * Beta (plasma physics)
 * Beta Andromedae
 * Beta Apodis
 * Beta Aquarii
 * Beta Aquilae
 * Beta Arae
 * Beta Arietis
 * Beta Aurigae
 * Beta Boötis
 * Beta Caeli
 * Beta Camelopardalis
 * Beta Cancri
 * Beta Canis Majoris
 * Beta Canis Minoris
 * Beta Canum Venaticorum
 * Beta Capricorni
 * Beta Carinae
 * Beta Cassiopeiae
 * Beta Centauri
 * Beta Cephei
 * Beta Ceti
 * Beta Chamaeleontis
 * Beta Circini
 * Beta Columbae
 * Beta Comae Berenices
 * Beta Coronae Australis
 * Beta Coronae Borealis
 * Beta Corvi
 * Beta Crateris
 * Beta Delphini
 * Beta Doradus
 * Beta Draconis
 * Beta Equulei
 * Beta Eridani
 * Beta Fornacis
 * Beta Gruis
 * Beta Herculis
 * Beta Horologii
 * Beta Hydrae
 * Beta Hydri
 * Beta Indi
 * Beta Lacertae
 * Beta Leonis Minoris
 * Beta Leporis
 * Beta Librae
 * Beta Lupi
 * Beta Lyrae
 * Beta Lyrae variable
 * Beta Mensae
 * Beta Microscopii
 * Beta Monocerotis
 * Beta Muscae
 * Beta Octantis
 * Beta Ophiuchi
 * Beta Pavonis
 * Beta Pegasi
 * Beta Phoenicis
 * Beta Pictoris
 * Beta Pictoris b
 * Beta Pictoris c
 * Beta Pictoris moving group
 * Beta Piscis Austrini
 * Beta Piscium
 * Beta Pyxidis
 * Beta Regio
 * Beta Reticuli
 * Beta Sagittae
 * Beta Sagittarii
 * Beta Scorpii
 * Beta Sculptoris
 * Beta Scuti
 * Beta Serpentis
 * Beta Sextantis
 * Beta Tauri
 * Beta Taurids
 * Beta Trianguli
 * Beta Trianguli Australis
 * Beta Tucanae
 * Beta Ursae Majoris
 * Beta Ursae Minoris
 * Beta Virginis
 * Beta Volantis
 * Beta angle
 * Beta cloth
 * Beta plane
 * Beta1 Sagittarii
 * Beta2 Sagittarii
 * Betelgeuse
 * Betelgeuse in fiction
 * Betelguese, a Trip Through Hell
 * Beth A. Brown
 * Beth Meacham
 * Beth Moses
 * Bethany Ehlmann
 * Betic corridor
 * Betsy Wollheim
 * Better Angels (Supergirl)
 * Better Than Life (Red Dwarf episode)
 * Bettina Meyer
 * Bettine van Vuuren
 * Bettinus (crater)
 * Betty Ballantine
 * Betty Boop's Hallowe'en Party
 * Betty Grissom
 * Betty Louise Turtle
 * Between Planets
 * Between the Strokes of Night
 * Betz mystery sphere
 * Betül Kaçar
 * Beutenbergiaceae
 * Bevameter
 * Bevan Sharpless
 * Beverly Shaw
 * Beverly-Begg Observatory
 * Beware the Batman
 * Bexta
 * Beyenchime-Salaatin crater
 * Beyond Apollo
 * Beyond Einstein program
 * Beyond Good & Evil (video game)
 * Beyond Good and Evil 2
 * Beyond Lies the Wub
 * Beyond Skyline
 * Beyond a Joke (Red Dwarf)
 * Beyond the Blue Event Horizon
 * Beyond the Farthest Star (Star Trek: The Animated Series)
 * Beyond the Law (1993 film)
 * Beyond the Red
 * Beyond the Red Line
 * Bečvář (crater)
 * Bhabha (crater)
 * Bhadra (Hindu calendar)
 * Bhaga
 * Bhairava
 * Bhakti yoga
 * Bharani
 * Bharat Ratra
 * Bhavartha Ratnakara
 * Bhob Stewart
 * Bhrigu
 * Bhrigu Samhita
 * Bhutan
 * Bhuvan
 * Bhāskara I
 * Bhāskara II
 * Bhāva
 * Bi Sheng (crater)
 * Bi-elliptic transfer
 * Bi-scalar tensor vector gravity
 * Biak scops owl
 * Bian River (China)
 * Bianca (moon)
 * Bianca Del Rio
 * Bianca Jagger
 * Bianchi classification
 * Bianchini (Martian crater)
 * Bianchini (lunar crater)
 * Bias frame
 * Biały Słoń
 * Białystok (meteorite)
 * Bibcode
 * Bibliography and Index of Geology
 * Bibliography of Aeolian Research
 * Bibliography of Halloween
 * Bibliography of encyclopedias: astronomy and astronomers
 * Biblis Tholus
 * Bicarbonate indicator
 * Biconic cusp
 * Bicyclobutane
 * Bidental
 * Biding My Time
 * Bidirectional reflectance distribution function
 * Bidirectional scattering distribution function
 * Biefeld–Brown effect
 * Biela (crater)
 * Biela's Comet
 * Biermann battery
 * Bifilar sundial
 * Bifurcation lake
 * Big Bang
 * Big Bang (book)
 * Big Bang Observer
 * Big Bang nucleosynthesis
 * Big Bear Solar Observatory
 * Big Bertha (lunar sample)
 * Big Bounce
 * Big Brake
 * Big Chuck and Lil' John
 * Big Crunch
 * Big Dipper
 * Big Gemini
 * Big Head Formation
 * Big Hero 6 (film)
 * Big Hole
 * Big Joe 1
 * Big Lurch (cosmology)
 * Big Money Hustlas
 * Big Muley
 * Big Picture Science
 * Big Planet
 * Big Pumpkin
 * Big Red Racing
 * Big Rip
 * Big Wolf on Campus
 * Big dumb booster
 * Big-Bang Cannon
 * Bigach crater
 * Bigelow Aerospace
 * Bigelow Commercial Space Station
 * Bigelow Expandable Activity Module
 * Bigelow Laboratory for Ocean Sciences
 * Bighorn Basin Dinosaur Project
 * Bight (geography)
 * Bigsby Medal
 * Bijou Theater (Chicago)
 * Bike (song)
 * Biker Mice from Mars
 * Biker Mice from Mars (2006 TV series)
 * Bikini Beach
 * Bila (sun)
 * Bilbo Colles
 * Bilharz (crater)
 * Bilibili Video Satellite
 * Bilitis (film)
 * Bill & Ted's Bogus Journey
 * Bill Anders
 * Bill Ashton (jazz musician)
 * Bill Burns (Australian politician)
 * Bill Camfield
 * Bill Cardille
 * Bill Chalker
 * Bill Hibbard
 * Bill Hopkins (composer)
 * Bill Kaysing
 * Bill King (Royal Navy officer)
 * Bill Maher
 * Bill McCay
 * Bill Moore (ufologist)
 * Bill Mumy
 * Bill Nelson
 * Bill Nye
 * Bill Pickering (rocket scientist)
 * Bill Price (physicist)
 * Bill Quirk
 * Bill Roper (filker)
 * Bill Tarmey
 * Bill Tindall
 * Bill Todd
 * Bill Warren (film historian and critic)
 * Billain
 * Billion years
 * Billionaire space race
 * Billy (crater)
 * Billy Blastoff
 * Billy Bounce
 * Billy Cranston
 * Billy Jack
 * Billy Meier
 * Billy Stritch
 * Bimal Mukherjee
 * Bimetric gravity
 * Bimodal volcanism
 * Binah (Kabbalah)
 * Binary asteroid
 * Binary black hole
 * Binary cycle
 * Binary mass function
 * Binary pulsar
 * Binary star
 * Binary stars in fiction
 * Binary system
 * Bindstone
 * Bing Maps Platform
 * Bingham (crater)
 * Binil Aryal
 * Binocular disparity
 * Binoculars
 * Bio of a Space Tyrant
 * Bio-ship Paladin
 * BioForge
 * BioHome
 * BioSentinel
 * Bioanalysis
 * Bioanalytical equivalent
 * Bioassay
 * Bioastronautics
 * Bioavailability (soil)
 * Biobío-Aluminé Fault Zone
 * Biochar
 * Biochemical oxygen demand
 * Bioclimatology
 * Bioclogging
 * Biocoenosis
 * Bioconcentration
 * Bioconversion
 * Biodiversity
 * Biodiversity loss
 * Bioeffector
 * Biofilm
 * Biofilter
 * Biogenic substance
 * Biogeochemical cycle
 * Biogeochemistry
 * Biogeographia
 * Biogeographic classification of India
 * Biogeographic realm
 * Biogeographic regions of Europe
 * Biogeography
 * Biogeography of Deep-Water Chemosynthetic Ecosystems
 * Biogeography of gastropods
 * Biogeography of paravian dinosaurs
 * Biogeology
 * Biogeosciences
 * Bioindicator
 * Bioinstrumentation
 * Biolab
 * Biological Oxidant and Life Detection
 * Biological effects of high-energy visible light
 * Biological integrity
 * Biological monitoring working party
 * Biological rules
 * Biological small-angle scattering
 * Biological soil crust
 * Biomarkers of exposure assessment
 * Biomedical spectroscopy
 * Biomes in Brazil
 * Biometeorology
 * Biomics
 * Biomineralization
 * Biomonitoring
 * Bion (satellite)
 * Bion No.11
 * Bion-M No.1
 * Bionic Leaf
 * Bionix
 * Biophysical environment
 * Bioregion
 * Bioremediation
 * Bioremediation of PCBs
 * Bioreporter
 * Bioretention
 * Biorhexistasy
 * Biorhythm (pseudoscience)
 * Biosaline agriculture
 * Biosand filter
 * Biosatellite
 * Biosatellite 1
 * Biosatellite 2
 * Biosatellite 3
 * Biosatellite program
 * Bioship
 * Biosignature
 * Biosolarization
 * Biospeleology
 * Biosphere
 * Biosphere 2
 * Biosphere model
 * Biostimulation
 * Biosurvey
 * Bioswale
 * Biot (crater)
 * Biotic Ligand Model
 * Biotic ethics
 * Biotic index
 * Biotic interchange
 * Biotic pump
 * Biotone
 * Biotope
 * Bioturbation
 * Biphasic and polyphasic sleep
 * Bipolar nebula
 * Bipolar outflow
 * Biranchinarayan Temple, Buguda
 * Biranchinarayan Temple, Palia
 * Birbal Sahni Institute of Palaeosciences
 * Bird's-eye view
 * Birds-1
 * Birds-2
 * Birefringence
 * Birge–Sponer method
 * Birkat Hachama
 * Birkeland (lunar crater)
 * Birkeland current
 * Birkhoff (crater)
 * Birla Planetarium, Chennai
 * Birla Planetarium, Kolkata
 * Birla Science Museum
 * Birmingham (crater)
 * Birmingham Astronomical Society
 * Birmingham Solar Oscillations Network
 * Birmingham Special
 * Birrificio Lambrate
 * Birt (crater)
 * Birth of Fire
 * Bis(trifluoromethyl)peroxide
 * Biscayne Aquifer
 * Bisei Spaceguard Center
 * Bishop Museum of Science and Nature
 * Bishop Ring (habitat)
 * Bishun Khare
 * Bismark (TV series)
 * Bissextus
 * Bitch Slap
 * BiteStrip
 * Bitter Sweet Symphony
 * Biuletyn Peryglacjalny
 * Bjarni Tryggvason
 * Bjerknes (lunar crater)
 * Bjerknes Centre for Climate Research
 * Bjerrum plot
 * Bjo Trimble
 * Bjornson (crater)
 * BlaBlaCar
 * BlacKkKlansman
 * Black (crater)
 * Black Antenna
 * Black Arrow
 * Black Belt Jones
 * Black Brant (rocket)
 * Black Caesar (film)
 * Black Cobra (film series)
 * Black Cobra Woman
 * Black Devil Doll From Hell
 * Black Dynamite
 * Black Dynamite (TV series)
 * Black Emanuelle
 * Black Emanuelle 2
 * Black Eye Galaxy
 * Black Girl (1972 film)
 * Black Gunn
 * Black Hawk (CB&Q train)
 * Black Heat (film)
 * Black Hills meridian
 * Black Hole Initiative
 * Black Holes and Baby Universes and Other Essays
 * Black Horse (rocket)
 * Black Horse, Preston
 * Black Horse, South Mimms
 * Black Horse, Stepney
 * Black Jesus (TV series)
 * Black Joy (1977 film)
 * Black Knight (rocket)
 * Black Knight satellite conspiracy theory
 * Black Leather Jackets
 * Black Lion, Hammersmith
 * Black Lion, Kilburn
 * Black Lolita
 * Black Mama White Mama
 * Black Man
 * Black Moshannon Observatory
 * Black Prince, Bexley
 * Black Prophecy
 * Black River (Duwamish River tributary)
 * Black Samson
 * Black Samurai
 * Black Sea Biogeographic Region
 * Black Shampoo
 * Black Shoals
 * Black Sister's Revenge
 * Black Sky Aerospace
 * Black Sky: The Race for Space
 * Black Snake (film)
 * Black Star of Africa
 * Black Starlet
 * Black Stone
 * Black Sun (symbol)
 * Black Tortoise
 * Black Widow Pulsar
 * Black Zero
 * Black body
 * Black brane
 * Black carbon
 * Black drop effect
 * Black dwarf
 * Black hole
 * Black hole bomb
 * Black hole complementarity
 * Black hole cosmology
 * Black hole electron
 * Black hole information paradox
 * Black hole starship
 * Black hole thermodynamics
 * Black holes in fiction
 * Black moon
 * Black powder rocket motor
 * Black sand
 * Black snake (firework)
 * Black star (semiclassical gravity)
 * Black triangle (UFO)
 * Black-body radiation
 * Black-capped screech owl
 * Black-eyed children
 * BlackGEM
 * Blackenstein
 * Blackett (crater)
 * Blackett effect
 * Blackhead Formation
 * Blackhole (video game)
 * Blackie & Kanuto
 * Blackjack (1978 film)
 * Blacklight poster
 * Blackout (horror experience)
 * Blackrock Castle
 * Blacksky Pathfinder-1
 * Blacksmiths Arms, Broughton Mills
 * Blackstar (TV series)
 * Blackstar (spacecraft)
 * Blackthorn Asylum
 * Blackthorne
 * Blackwater (coal)
 * Blackwater (waste)
 * Blacula
 * Blade Runner 3: Replicant Night
 * Blade Runner: Black Lotus
 * Blagg (crater)
 * Blagovest (satellite)
 * Blahbalicious
 * Blairmorite
 * Blaisdon Hall
 * Blake's 7
 * Blakesley Burkhart
 * Blakiston's Line
 * Blancanus (crater)
 * Blanchard (crater)
 * Blanchinus (crater)
 * Blanco 1
 * Blandford (soil)
 * Blandford–Znajek process
 * Blanet
 * Blank & Jones
 * Blanket
 * Blanket fort
 * Blanket sleeper
 * Blanketing effect
 * Blaník
 * Blast Off at Woomera
 * Blast Radius
 * Blast shelter
 * Blast wave
 * BlastOff! Corporation
 * Blaster Master
 * Blaster Master Jr.
 * Blaster's Universe
 * Blaxploitation
 * Blaxploitation horror films
 * Blazar
 * Blaze Starr Goes Nudist
 * Blazed grating
 * Blazhko (crater)
 * Blazhko effect
 * Bleb (mineralogy)
 * Bled (crater)
 * Bleecker Street Cinema
 * Bleien Radio Observatory
 * Bless This Acid House
 * Bleu Nuit
 * Blick Mead
 * Blind Beast vs. Dwarf
 * Blind Rage (film)
 * Blind flying panel
 * Blindfold
 * Blindsight (Watts novel)
 * Blink comparator
 * Blink of an Eye (Star Trek: Voyager)
 * Bliss (Muse song)
 * Bliss (crater)
 * Blithfield meteorite
 * Blitz Club
 * Blitzar
 * Blizna
 * Block Island meteorite
 * Blockfield
 * Blok 2BL
 * Blood Cult
 * Blood Drive (TV series)
 * Blood Feast
 * Blood Freak
 * Blood Gulch
 * Blood Junkie
 * Blood Mania
 * Blood Monkey
 * Blood Red Sandman
 * Blood Sucking Freaks
 * Blood moon prophecy
 * Bloodbath of B-R5RB
 * Bloodborne
 * Bloodsuckers (2005 film)
 * Bloodsuckers from Outer Space
 * Bloodthirsty Butchers (film)
 * Bloody Creek crater
 * Bloody Murder
 * Bloody Murder 2: Closing Camp
 * Bloom (novel)
 * Bloop
 * Blow Up (club night)
 * BlowOut
 * Blowhole (geology)
 * Blowout (geomorphology)
 * BluShift Aerospace
 * Blue (Red Dwarf)
 * Blue (The Verve song)
 * Blue 88
 * Blue Abyss
 * Blue Anchor, Hammersmith
 * Blue Ball Inn
 * Blue Comet SPT Layzner
 * Blue Dream
 * Blue Gemini
 * Blue Hill Meteorological Observatory
 * Blue Lantern Corps
 * Blue Mars (video game)
 * Blue Mesa Observatory
 * Blue Moon (spacecraft)
 * Blue Night Network
 * Blue Origin
 * Blue Origin Goddard
 * Blue Origin facilities
 * Blue Origin landing platform ship
 * Blue Oyster (Saint-Petersburg, Russia)
 * Blue Planet (role-playing game)
 * Blue Remembered Earth
 * Blue Ridge Limited
 * Blue Ridge Mountains
 * Blue Sky with a White Sun
 * Blue Tiger (film)
 * Blue Train (Japan)
 * Blue Wall Cafe
 * Blue dwarf (red-dwarf stage)
 * Blue giant
 * Blue hole
 * Blue hour
 * Blue ice (glacial)
 * Blue large-amplitude pulsator
 * Blue loop
 * Blue moon
 * Blue sky catastrophe
 * Blue space
 * Blue straggler
 * Blue supergiant star
 * Blue-ice area
 * Blueschist
 * Blueshift
 * Bluestone
 * Bluestonehenge
 * Blytt–Sernander system
 * BlöödHag
 * Bo Jiang (NASA researcher)
 * Boar's Head Inn, Bishop's Stortford
 * Board of Registered Polysomnographic Technologists
 * Bob "Hoolihan" Wells
 * Bob Behnken
 * Bob Berman
 * Bob Corritore
 * Bob Costas
 * Bob Dempsey
 * Bob Eggleton
 * Bob Gale
 * Bob Larkin
 * Bob Lazar
 * Bob Mould
 * Bob P. King
 * Bob Parkinson (aerospace engineer)
 * Bob Sinclar
 * Bob Stane
 * Bob Stanley (musician)
 * Bob Twiggs
 * Bob Wilkins
 * Boba Fett
 * Bobak Ferdowsi
 * Bobbejaan Schoepen
 * Bobbie Vaile
 * Bobby Short
 * Bobillier (crater)
 * Bobina
 * Bobone (crater)
 * Bocage
 * Boccaccio (crater)
 * Bochum Observatory
 * Bodacious Space Pirates
 * Bodamalai Betta
 * Bode (crater)
 * Body Bags (film)
 * Body Snatchers (1993 film)
 * Body and Soul (1925 film)
 * Body of water
 * Bodysnatcher (Red Dwarf)
 * Bodyswap (Red Dwarf)
 * Boeddicker (crater)
 * Boeing
 * Boeing 601
 * Boeing 702
 * Boeing Crewed Flight Test
 * Boeing Lunar Lander
 * Boeing OC-135B Open Skies
 * Boeing Orbital Flight Test
 * Boeing Orbital Flight Test 2
 * Boeing Pad Abort Test
 * Boeing Satellite Development Center
 * Boeing Starliner
 * Boeing Starliner Calypso
 * Boeing Starliner-1
 * Boeing X-20 Dyna-Soar
 * Boeing X-37
 * Boeing X-40
 * Boethius (Mercurian crater)
 * Boethius (lunar crater)
 * Bog
 * Boggomoss
 * Bogomolny equations
 * Bogoriellaceae
 * Boguslawsky (crater)
 * Bohdan Paczyński
 * Bohemian crater
 * Bohm diffusion
 * Bohnenberger (crater)
 * Boho Caves
 * Bohr (crater)
 * Boilerplate (spaceflight)
 * Boiling
 * Boiling point
 * Boise meridian
 * Bojite
 * Bok (Martian crater)
 * Bok (lunar crater)
 * Bok Prize
 * Bok Telescope
 * Bok globule
 * Bokashi (horticulture)
 * Bold Orion
 * Bold They Rise
 * Boletín de Geología
 * Boleyn Tavern
 * Bolide
 * Bolivarian Agency for Space Activities
 * Bolivia
 * Bolivian Space Agency
 * Bolkar Mountains
 * Boller and Chivens
 * Bolocam Galactic Plane Survey
 * Bolometer
 * Bolometric correction
 * Bolsena Lacus
 * Bolshoi Cosmological Simulation
 * Bolson
 * Bolster
 * Bolster heath
 * Boltzmann (crater)
 * Boltzmann brain
 * Boltzmann relation
 * Bolus of Mendes
 * Bolyai (crater)
 * Bomb Crater Pond (Walthamstow)
 * Bombala (crater)
 * Bombay Rock
 * Bombelli (crater)
 * Bomber Man World
 * Bombergirl
 * Bomberman
 * Bomberman '93
 * Bomberman '94
 * Bomberman (1983 video game)
 * Bomberman (1990 video game)
 * Bomberman (2006 video game)
 * Bomberman (Nintendo 3DS game)
 * Bomberman (Nintendo DS)
 * Bomberman 2
 * Bomberman 64 (1997 video game)
 * Bomberman 64 (2001 video game)
 * Bomberman 64: The Second Attack
 * Bomberman Blast
 * Bomberman Blitz
 * Bomberman Fantasy Race
 * Bomberman GB
 * Bomberman Generation
 * Bomberman Hardball
 * Bomberman Hero
 * Bomberman II
 * Bomberman Jetters (video game)
 * Bomberman Kart
 * Bomberman Land
 * Bomberman Land (PSP)
 * Bomberman Land (Wii)
 * Bomberman Land 2
 * Bomberman Land Touch!
 * Bomberman Land Touch! 2
 * Bomberman Legends
 * Bomberman Live
 * Bomberman Live: Battlefest
 * Bomberman Max
 * Bomberman Max 2
 * Bomberman Online
 * Bomberman Party Edition
 * Bomberman Quest
 * Bomberman Story DS
 * Bomberman Touch
 * Bomberman Tournament
 * Bomberman Ultra
 * Bomberman Wars
 * Bomberman World
 * Bomberman: Act Zero
 * Bomberman: Panic Bomber
 * Bombing of Peenemünde in World War II
 * Bombing of the Bezuidenhout
 * Bombshells (House)
 * Bonaventura Cavalieri
 * Bond (Chinese constellation)
 * Bond (crater)
 * Bond albedo
 * Bondarenko (crater)
 * Bonded Fibre Matrix
 * Bondi Beach Cultural Landscape
 * Bondi Sands
 * Bondi accretion
 * Bondi–Metzner–Sachs group
 * Bone (1972 film)
 * Bone Wars
 * Bones (2001 film)
 * Bonestell (crater)
 * Bonet de Lattes
 * Bonfire
 * Bonfire Night
 * Bonfire toffee
 * Bongbong (rocket)
 * Bongkrek acid
 * Bonilla observation
 * Boninite
 * Bonnard J. Teegarden
 * Bonner sphere
 * Bonneville (crater)
 * Bonnie Buratti
 * Bonnie J. Dunbar
 * Bonnie Ross
 * Bonnie X Clyde
 * Bonnie's Kids
 * Bonnor beam
 * Bonnor–Ebert mass
 * Bonpland (crater)
 * Boo 2! A Madea Halloween
 * Boo Moon
 * Boo to You Too! Winnie the Pooh
 * Boo! A Madea Halloween
 * Book of Abraham
 * Book of Dreams (novel)
 * Book of Fixed Stars
 * Book of Moses
 * Book of Nut
 * Book of Optics
 * Book of Wonders
 * Book of the Nine Rocks
 * Booka Shade
 * Booking (clubbing)
 * Boolardy
 * Boole (crater)
 * BoomSAR
 * Boomerang Nebula
 * Booming Ice Chasm
 * Boonshoft Museum of Discovery
 * Boost-glide
 * Boosted Arcas
 * Boosted Dart
 * Booster pump
 * Booster separation motor
 * Boot Hill (lunar mountain)
 * Boothite
 * Bootie (club night)
 * Bootstrap current
 * Bopolu (crater)
 * Bora (Australian)
 * Borchgrevink orogeny
 * Borda (crater)
 * Bordeaux Observatory
 * Bordeaux Segalen University
 * Border Down
 * Borderlands (series)
 * Borderlands (video game)
 * Borderlands 2
 * Borderlands 3
 * Borderlands: The Pre-Sequel
 * Borderline (Madonna song)
 * Borders of the oceans
 * Borde–Guth–Vilenkin theorem
 * Boreal Biogeographic Region
 * Borealis Planitia
 * Boreas (journal)
 * Borel (crater)
 * Borexino
 * Boring (earth)
 * Boring Billion
 * Borirane
 * Boris (crater)
 * Boris Brejcha
 * Boris Chertok
 * Boris Dlugosch
 * Boris Gerasimovich
 * Boris Kadomtsev
 * Boris Katorgin
 * Boris Komitov
 * Boris Morukov
 * Boris Rauschenbach
 * Boris Vallejo
 * Boris Volynov
 * Boris Vorontsov-Velyaminov
 * Boris Yegorov
 * Borman (crater)
 * Born (crater)
 * Borneo SubOrbitals
 * Born–Infeld model
 * Borobudur
 * Borobudur Temple Compounds
 * Boron
 * Boron on Mars
 * Borowiec Astrogeodynamic Observatory
 * Bortle scale
 * Boruto Uzumaki
 * Borya (crater)
 * Bosch (crater)
 * Boscombe Bowmen
 * Boscovich (crater)
 * Bose (crater)
 * Boshra Salem
 * Bosko's Knight-Mare
 * Bosonic string theory
 * Boss (crater)
 * Boss General Catalogue
 * Boss Nigger
 * Bosscha Observatory
 * Boston Camera
 * Boston Journal of Natural History
 * Boston Opera House
 * Boswell Observatory
 * Botanical expedition
 * Botswana
 * Botticelli (crater)
 * Bottle service
 * Bottlebrush (cave formation)
 * Bottled gas
 * Bottom ash
 * Bottom crawler
 * Bottom water
 * Bouguer (Martian crater)
 * Bouguer (lunar crater)
 * Bouguer anomaly
 * Boulder
 * Boulder choke
 * Boulder clay
 * Boulet Brothers
 * Boulevard Theater (Miami)
 * Boulevard of Broken Dreams (Green Day song)
 * Boulia (crater)
 * Bounce Rock
 * Bouncer (doorman)
 * Bouncing Babies
 * Bound to Vengeance
 * Bound water
 * Boundary-Layer Meteorology
 * Boundless (video game)
 * Bourbon Tunnel
 * Bourges Cathedral
 * Bourne (stream)
 * Boussingault (crater)
 * Bousso's holographic bound
 * Bovedy (meteorite)
 * Bow City crater
 * Bow shock
 * Bowditch (crater)
 * Bowen (crater)
 * Bowen-Apollo (crater)
 * Bowers Basebed
 * Bowman Observatory
 * Box Mine
 * Box orbit
 * Box-bed
 * Box-spring
 * Boxers NYC Washington Heights
 * Boxhole crater
 * Boxing Helena
 * Boy George
 * Boyd Morrison
 * Boyd Theatre
 * Boyden Observatory
 * Boyer–Lindquist coordinates
 * Boyhood Daze
 * Boyle (crater)
 * Boys Noize
 * Boznańska (crater)
 * Boösaule Montes
 * Boötes
 * Boötes I (dwarf galaxy)
 * Boötes II (dwarf galaxy)
 * Boötes III (dwarf galaxy)
 * Boötes in Chinese astronomy
 * Boötes void
 * Boštjan Burger
 * Bracewell probe
 * Brachina meteorite
 * Brachinite
 * Bracken House, London
 * Brackett (crater)
 * Brackish marsh
 * Brackish water
 * Brad Bird
 * Brad Neely's Harg Nallin' Sclopio Peepio
 * Brad Steiger
 * Brad Turner (director)
 * Brad W. Foster
 * Brad Wright
 * Bradbury Landing
 * Braden Allenby
 * Bradford A. Smith
 * Bradford Parkinson
 * Bradford Robotic Telescope
 * Bradley C. Edwards
 * Bradley Observatory
 * Bradley Schaefer
 * Bradshaw model
 * Bradstreet Observatory
 * Bradyseism
 * Braeside Observatory
 * Bragg (crater)
 * Bragg plane
 * Bragg's law
 * Brahin (meteorite)
 * Brahmadeva
 * Brahms (crater)
 * Braid bar
 * Braided river
 * Brain Damage (film)
 * Brain Damage (song)
 * Brain terrain
 * Brainiac (story arc)
 * Brains (Thunderbirds)
 * Brainship
 * Brake to Vacate
 * Brallobarbital
 * Bramante (crater)
 * Bramertonian Stage
 * Bramshill House
 * Brand New Day (Agents of S.H.I.E.L.D.)
 * Brandenburg Concertos
 * Brandon Block
 * Brandon Reilly (musician)
 * Brane
 * Brane cosmology
 * Branner Earth Sciences Library
 * Brans–Dicke theory
 * Brashear (Martian crater)
 * Brashear (lunar crater)
 * Brasilsat B1
 * Brasilsat B2
 * Brasilsat B3
 * Brasilsat-A1
 * Brasilsat-A2
 * Brassica rapa
 * Bratschen
 * Brattle Theatre
 * Braude (crater)
 * Braunschweig meteorite
 * BraveStarr
 * BraveStarr: The Movie
 * Bravest Warriors
 * Brayley (crater)
 * Brazil (1985 film)
 * Brazil lunar sample displays
 * Brazilea
 * Brazilian Decimetric Array
 * Brazilian Highlands
 * Brazilian Journal of Geology
 * Brazilian Space Agency
 * Brazilian funnel-eared bat
 * Brazilian space program
 * Break Free (song)
 * Breakaway (Space: 1999)
 * Breakdown voltage
 * Breaking Strain
 * Breakthrough Enceladus mission
 * Breakthrough Initiatives
 * Breakthrough Listen
 * Breakthrough Propulsion Physics Program
 * Breakthrough Starshot
 * Breathalyzer
 * Breathe (Pink Floyd song)
 * Breathing
 * Brecon Beacons
 * Brecon Beacons National Park
 * Bredikhin (crater)
 * Breeds There a Man...?
 * Breislak (crater)
 * Breit frame
 * Bremsstrahlung
 * Bren School of Environmental Science & Management
 * Brenda Dingus
 * Brenham (meteorite)
 * Brenna Flaugher
 * Brenner (crater)
 * Brent W. Jett Jr.
 * Brent crater
 * Brera Astronomical Observatory
 * Bresser
 * Brett Cantor
 * Brett Denevi
 * Brett J. Gladman
 * Brett Leonard
 * Brevibacillus borstelensis
 * Brevibacterium
 * Brevibacterium iodinum
 * Brewers Fayre
 * Brewster (crater)
 * Brewster H. Shaw
 * Brewster angle microscope
 * Brewster's angle
 * Brezinaite
 * Brian "Little Legs" Clifford
 * Brian A. Skiff
 * Brian Aldiss
 * Brian Attebery
 * Brian Binnie
 * Brian Bowsher
 * Brian Cox (physicist)
 * Brian Duffy (astronaut)
 * Brian G. Marsden
 * Brian G. W. Manning
 * Brian Keating
 * Brian Mason (geochemist)
 * Brian May
 * Brian Milton
 * Brian Nord
 * Brian O'Leary
 * Brian Orr
 * Brian P. Roman
 * Brian Redman
 * Brian Schmidt
 * Brian Stableford
 * Brian Swimme
 * Brian Thomsen
 * Brian Williamson
 * Brianchon (crater)
 * Brianite
 * Briault (crater)
 * Brick Bradford (serial)
 * Brickearth
 * Bride of the Monster
 * Bride of the Robot
 * Brides of March
 * Bridge (crater)
 * Bridge End Inn
 * Bridge scour
 * Bridgeland stability condition
 * Bridgeport Village (Oregon)
 * Bridget Everett
 * Bridgewater Triangle
 * Bridgman (crater)
 * Brief Answers to the Big Questions
 * Briggs (crater)
 * Bright Sparklers Fireworks disaster
 * Bright Star Catalogue
 * Bright giant
 * Bright spots on Ceres
 * Brightburn
 * Brightest cluster galaxy
 * Brightness Reef
 * Brightness temperature
 * Brigitta Sipőcz
 * Brihat Jataka
 * Brihat Parashara Hora Shastra
 * Brik-II (satellite)
 * Brilliant Pebbles
 * Brillouin spectroscopy
 * Brillouin zone
 * Brine
 * Brine pool
 * Brine rejection
 * Brine shrimp
 * Bring the Boys Back Home
 * Bringing Back the Bluestones
 * Brinsley Le Poer Trench, 8th Earl of Clancarty
 * Bris sextant
 * Brisbane (lunar crater)
 * Brisbane Limited
 * Brisbane tuff
 * Bristol Aerospace
 * Bristol Spaceplanes
 * Bristol Youth Strike 4 Climate
 * BritGrav
 * Britannia Illustrata
 * Britannia, Richmond
 * British Aerospace
 * British Aerospace HOTOL
 * British Astronomical Association
 * British Cartographic Society
 * British Film Institute
 * British Firework Championships
 * British Interplanetary Society
 * British Mid-Ocean Ridge Initiative
 * British National Committee for Space Research
 * British National Space Centre
 * British Oceanographic Data Centre
 * British Pyrotechnists Association
 * British Rail flying saucer
 * British Sleep Society
 * British Society for Geomorphology
 * British UFO Research Association
 * British and Irish Meteorite Society
 * British and World Marbles Championship
 * British commercial spaceport competition
 * British space programme
 * British television Apollo 11 coverage
 * Brittle–ductile transition zone
 * Broad Band X-ray Telescope
 * Broadband Global Area Network
 * Broadband acoustic resonance dissolution spectroscopy
 * Broadband viscoelastic spectroscopy
 * Broadcasting Satellite System Corporation
 * Broadway Cinema
 * Broadway Limited
 * Broadway Open House
 * Brocadia fulgida
 * Brocchi's Cluster
 * Brockia
 * Brockia lithotrophica
 * Brocks Fireworks
 * Broglio Space Center
 * Broken Bow (Star Trek: Enterprise)
 * Bromazepam
 * Bromisoval
 * Bromley House Library
 * Bromocresol green
 * Bromocresol purple
 * Bromophenol blue
 * Bromothymol blue
 * Bromoureide
 * Bronk (crater)
 * Bronnant Fault
 * Brontinus
 * Brontë (Mercurian crater)
 * Brontë (lunar crater)
 * Brooke Owens
 * Brooke Owens Fellowship
 * Brookhill Tavern
 * Brookings Report
 * Brooklyn Paramount Theater
 * Brooks (crater)
 * Brooks Astronomical Observatory
 * Brooks Observatory
 * Brooks Pate
 * Broom-Stick Bunny
 * Brophebarbital
 * Brorfelde Observatory
 * Brother Brown
 * Brotherhood of Death
 * Brothers Hildebrandt
 * Brothers in Rhythm
 * Brothers of Earth
 * Brouwer (crater)
 * Brouwer Award (Division on Dynamical Astronomy)
 * Brown (crater)
 * Brown Bear, Whitechapel
 * Brown dwarf
 * Brown earth
 * Brown podzolic
 * Brown-dwarf desert
 * Brownie Chasma
 * Bruce (crater)
 * Bruce A. McIntosh
 * Bruce Allen (physicist)
 * Bruce Barrymore Halpenny
 * Bruce Bugbee
 * Bruce C. Murray
 * Bruce Cathie
 * Bruce E. Melnick
 * Bruce Elmegreen
 * Bruce Gillespie
 * Bruce Hapke
 * Bruce Jakosky
 * Bruce Jensen
 * Bruce Lusignan
 * Bruce Maccabee
 * Bruce McCandless II
 * Bruce Medal
 * Bruce Pelz
 * Bruce Pennington
 * Bruce Peterson
 * Bruce Runnegar
 * Bruce Sterling
 * Bruce T. Draine
 * Bruce Winstein
 * Bruce Woodgate
 * Bruceploitation
 * Bruegel (crater)
 * Brukkaros Solar Observatory
 * Brumaire
 * Brunelleschi (crater)
 * Brunner (crater)
 * Bruno Leibundgut
 * Bruno Oberle
 * Bruno Rossi
 * Bruno Rossi Prize
 * Bruno Thüring
 * Bruno della Chiesa
 * Brunswick star
 * Brunt–Väisälä frequency
 * Bruny Island Radio Spectrometer
 * Brush Electric Illuminating Company
 * Brush discharge
 * Brute Corps
 * Brute Force (video game)
 * Bruxism
 * Bryan Allen (hang glider)
 * Bryan D. O'Connor
 * Bryan Gaensler
 * Bryan Lunney
 * Bryan Robin
 * Bryan Singer
 * Bryan Versteeg
 * Bryan-Gooding Planetarium
 * Bryce DeWitt
 * Bryneglwys Fault
 * Bryocella
 * Bryocella elongata
 * Bubble Nebula (NGC 6822)
 * Bubble and Squeak (video game)
 * Bubble fusion
 * Bubble octant
 * Bubble point
 * Bubnoff unit
 * Bubo osvaldoi
 * Bubsy 3D
 * Bubup
 * Buch (crater)
 * Bucharest Observatory
 * Buchberger Leite
 * Buck (crater)
 * Buck Danny
 * Buck Nelson
 * Buck Rogers
 * Buck Rogers (serial)
 * Buck Rogers XXVC
 * Buck Rogers in the 25th Century (TV series)
 * Buck Rogers in the 25th Century (film)
 * Buck Rogers in the 25th Century (radio series)
 * Buck Rogers: A Life in the Future
 * Buck Rogers: Countdown to Doomsday
 * Buck Rogers: Matrix Cubed
 * Bucket argument
 * Buckethead
 * Bucktown (film)
 * Bucky O'Hare (NES video game)
 * Bucky O'Hare (arcade game)
 * Bucky O'Hare and the Toad Wars
 * Bucolome
 * Bucureștioara River
 * Budd Hopkins
 * Buddha's Little Finger (film)
 * Buddhism and evolution
 * Buddy Greco
 * Buddy's Bug Hunt
 * Budh Planitia
 * Budha
 * Buehler Planetarium and Observatory
 * Buena Vista, Peru
 * Buffalo Automation
 * Buffer gas
 * Buffer strip
 * Buffer-gas trap
 * Buffon (crater)
 * Bug-eyed monster
 * BugSat 1
 * Bugang
 * Bugs Bunny in Double Trouble
 * Bugs Bunny's Howl-oween Special
 * Building engineering physics
 * Built-in hold
 * Built-in test equipment
 * Buisson (crater)
 * Buiten De Zone
 * Bujeo
 * Buket Uzuner
 * Bulbophyllum nocturnum
 * Bulgar calendar
 * Bulgaria 1300
 * BulgariaSat-1
 * Bulgarian Astronautical Society
 * Bulgarian cosmonaut program
 * Bulgarian names in space
 * Bulk density
 * Bulk soil
 * Bulkhead line
 * Bull Arm Formation
 * Bull Inn, Sonning
 * Bull's Head Inn, Poole
 * Bull's Head, Strand-on-the-Green
 * Bullerwell Lecture
 * Bullet Cluster
 * Bullet Galaxy
 * Bullet Group
 * Bulletin de la Société Géologique de France
 * Bulletin of Engineering Geology and the Environment
 * Bulletin of Geosciences
 * Bulletin of Glaciological Research
 * Bulletin of Marine Science
 * Bulletin of Volcanology
 * Bulletin of the American Astronomical Society
 * Bulletin of the American Meteorological Society
 * Bulletin of the Astronomical Society of India
 * Bulletin of the Geological Society of Finland
 * Bulletin of the Iraq Natural History Museum
 * Bulletin of the Natural History Museum
 * Bulletin of the Seismological Society of America
 * Bulletstorm
 * Bullialdus (crater)
 * Bullock Texas State History Museum
 * Bully (2001 film)
 * Bullyparade – Der Film
 * Bumblebee models
 * Bumblebeee
 * Bumfights
 * Bumpy torus
 * Bunburra Rockhole (meteorite)
 * Bunch of Grapes, Knightsbridge
 * Bundesamt für Eich- und Vermessungswesen
 * Bundesverband der Deutschen Luft- und Raumfahrtindustrie
 * Bundle adjustment
 * Bundling (tradition)
 * Bunene
 * Bunin (crater)
 * Bunk bed
 * Bunker (Berlin)
 * Bunkie board
 * Bunsen (crater)
 * Bura Tamori
 * Buran (spacecraft)
 * Buran programme
 * Burckhardt (crater)
 * Burckle Crater
 * Bureau des Longitudes
 * Bureau of Oceans and International Environmental and Scientific Affairs
 * Bureau of Population, Refugees, and Migration
 * Burial vault (tomb)
 * Buried Valley Aquifer System
 * Buried rupture earthquake
 * Buried valley
 * Burke (crater)
 * Burkina Faso
 * Burlesque (compilation album)
 * Burlingtons Bar
 * Burmese zodiac
 * Burn (landform)
 * Burn recovery bed
 * Burn, Witch. Burn! (American Horror Story)
 * Burnham (crater)
 * Burnham Double Star Catalogue
 * Burning Bridges (Pink Floyd song)
 * Burning Heart (novel)
 * Burning Pink
 * Burning bush
 * Burns (crater)
 * Burns and Porter
 * Burroughs (crater)
 * Bursting Pulsar
 * Burt Rutan
 * Burton (crater)
 * Burton Edelson
 * Buru boobook
 * Burundi
 * Bury Me an Angel
 * Burying the Ex
 * Burçin Mutlu-Pakdil
 * Busan International Fireworks Festival
 * Busek
 * Bush Barrow
 * Bushnell Corporation
 * Bushwhacked (Firefly)
 * Bushwick Inlet Park
 * Business ecosystem
 * Bussard ramjet
 * Busy Philipps
 * Butabarbital
 * Butalbital
 * Butallylonal
 * Butcher Billy
 * Butcher, Baker, Nightmare Maker
 * Butcher–Oemler Effect
 * Butlerov (crater)
 * Butobarbital
 * Butt and Oyster
 * Butte Special
 * Butterfield dial
 * Butterflies and Hurricanes
 * Butterfly Cluster
 * Button Moon
 * Buttoned Down Disco
 * Buvinda Vallis
 * Buys Ballot Medal
 * Buys-Ballot (crater)
 * Buzz Aldrin
 * Buzz Lightyear
 * Buzz Lightyear of Star Command
 * Buzz Lightyear of Star Command (video game)
 * Buzz Lightyear of Star Command: The Adventure Begins
 * Buzz Lightyear's Space Ranger Spin
 * Buzzard Coulee meteorite
 * By Any Other Name
 * By the Sun and Stars
 * ByTowne Cinema
 * Byrd (lunar crater)
 * Byrd Theatre
 * Byrgius (crater)
 * Byrhtferth
 * Byron (crater)
 * Byron Haskin
 * Byron K. Lichtenberg
 * Byron Preiss
 * Bytham River
 * Byurakan Observatory
 * Byzantine calendar
 * Byzantine time
 * BzK galaxy
 * Bärbel Koribalski
 * Béla Harkányi
 * Bélier (rocket)
 * Börde
 * Bùi Thanh Liêm
 * Bülach Observatory
 * Bürg (crater)
 * Büsching (crater)
 * Břetislav Staš
 * Bṛhaspati
 * C Aquarii
 * C Capricorni
 * C Carinae
 * C Centauri
 * C Puppis
 * C Scorpii
 * C Ursae Majoris
 * C Velorum
 * C-41 (rocket)
 * C-57D
 * C-Band All Sky Survey
 * C-type asteroid
 * C. B. Collins
 * C. C. L. Gregory
 * C. Donald Shane
 * C. Donald Shane telescope
 * C. Doris Hellman
 * C. E. K. Mees Observatory
 * C. Gordon Fullerton
 * C. H. Mullan
 * C. Herschel (crater)
 * C. Marcella Carollo
 * C. Mayer (crater)
 * C. Michelle Olmstead
 * C. V. Raman
 * C. V. Vishveshwara
 * C.C. and Company
 * C.O.D. (musician)
 * C/1652 Y1
 * C/1702 H1
 * C/1760 A1
 * C/1769 P1
 * C/1807 R1
 * C/1847 T1
 * C/1861 G1 (Thatcher)
 * C/1861 J1
 * C/1865 B1
 * C/1874 H1
 * C/1881 K1
 * C/1890 V1
 * C/1911 O1
 * C/1911 S3
 * C/1948 V1
 * C/1957 P1 (Mrkos)
 * C/1980 E1 (Bowell)
 * C/1989 X1 (Austin)
 * C/1992 J1 (Spacewatch)
 * C/1999 F1 (Catalina)
 * C/1999 J6 (SOHO)
 * C/1999 S4 (LINEAR)
 * C/2000 U5 (LINEAR)
 * C/2000 W1 (Utsunomiya-Jones)
 * C/2001 OG108
 * C/2001 Q4 (NEAT)
 * C/2002 T7
 * C/2002 V1 (NEAT)
 * C/2003 A2 (Gleason)
 * C/2006 M4 (SWAN)
 * C/2006 P1 (McNaught)
 * C/2006 VZ13 (LINEAR)
 * C/2007 E2 (Lovejoy)
 * C/2007 F1
 * C/2007 K5 (Lovejoy)
 * C/2007 Q3 (Siding Spring)
 * C/2007 W1 (Boattini)
 * C/2008 T2 (Cardinal)
 * C/2009 R1 (McNaught)
 * C/2010 X1 (Elenin)
 * C/2011 J2 (LINEAR)
 * C/2011 L4
 * C/2011 W3 (Lovejoy)
 * C/2012 E2 (SWAN)
 * C/2012 F6 (Lemmon)
 * C/2012 K1
 * C/2012 S4
 * C/2013 A1 (Siding Spring)
 * C/2013 R1
 * C/2013 UQ4 (Catalina)
 * C/2013 US10 (Catalina)
 * C/2013 V5 (Oukaimeden)
 * C/2014 E2 (Jacques)
 * C/2014 G3
 * C/2014 Q1 (PANSTARRS)
 * C/2014 Q2 (Lovejoy)
 * C/2014 Q3 (Borisov)
 * C/2015 ER61 (PANSTARRS)
 * C/2015 F3
 * C/2015 F5 (SWAN-XingMing)
 * C/2015 G2 (MASTER)
 * C/2015 V2 (Johnson)
 * C/2016 M1 (PANSTARRS)
 * C/2016 R2 (PANSTARRS)
 * C/2016 U1 (NEOWISE)
 * C/2017 K2
 * C/2017 T1 (Heinze)
 * C/2017 T2 (PANSTARRS)
 * C/2017 U7
 * C/2018 C2 (Lemmon)
 * C/2018 F4 (PANSTARRS)
 * C/2018 V1 (Machholz-Fujikawa-Iwamoto)
 * C/2018 Y1 (Iwamoto)
 * C/2019 E3 (ATLAS)
 * C/2019 U6 (LEMMON)
 * C/2019 Y1 (ATLAS)
 * C/2019 Y4 (ATLAS)
 * C/2020 F5 (MASTER)
 * C/2020 F8 (SWAN)
 * C/NOFS
 * C23 tragedy
 * C2A
 * C3 Centauri
 * C4MIP
 * C57BL/6
 * CAA Theatre
 * CAB Direct (database)
 * CACTUS
 * CAE Inc.
 * CAESAR (spacecraft)
 * CALIPSO
 * CALLISTO
 * CALPUFF
 * CALUX
 * CAMEO (satellite)
 * CAPE-1
 * CAPECON project
 * CAPSTONE (spacecraft)
 * CARTE Museum
 * CAS parameters
 * CASA (aircraft manufacturer)
 * CASSIOPE
 * CAT-1
 * CBERS-1
 * CBERS-2
 * CBERS-2B
 * CBERS-3
 * CBERS-4
 * CC Andromedae
 * CCCma
 * CCPForge
 * CCSDS 122.0-B-1
 * CCSDS MO Services
 * CCSDS Mission Operations
 * CD Crucis
 * CD-38 2551
 * CE Gruis
 * CEATSA
 * CEIPP
 * CELPA (El Chamical)
 * CELPA (Mar Chiquita)
 * CEMP star
 * CENBOL
 * CERES (satellite)
 * CERGA Observatory
 * CERN Axion Solar Telescope
 * CERN Neutrinos to Gran Sasso
 * CESRA
 * CFBDS J005910.90–011401.3
 * CFBDSIR 1458+10
 * CFBDSIR 2149−0403
 * CFESat
 * CFHQS J2329-0301
 * CG 4
 * CGCG 049-033
 * CGHS model
 * CH Crucis
 * CH Cygni
 * CH star
 * CHAMP (satellite)
 * CHARA array
 * CHARISSA
 * CHEOPS
 * CHICOS
 * CHIPSat
 * CHIRP (algorithm)
 * CHON
 * CHXR 73
 * CI Tauri
 * CI1 fossils
 * CICE (sea ice model)
 * CID-42
 * CINDI
 * CIOMS/RUCAM scale
 * CISL Research Data Archive
 * CK Carinae
 * CK Vulpeculae
 * CL Draconis
 * CL J1001+0220
 * CL0024+17
 * CL1358+62
 * CLARREO
 * CLAS detector
 * CLASS B1359+154
 * CLAW hypothesis
 * CLEAN (algorithm)
 * CLEO (router)
 * CLIO
 * CLIWOC
 * CLOUD experiment
 * CLUPI
 * CLaMS
 * CM Draconis
 * CMAQ
 * CMB cold spot
 * CMBFAST
 * CMBStar-1
 * CMS-01
 * CN Andromedae
 * CN star
 * CNES
 * CNO cycle
 * CO-0.40-0.22
 * CO2 fertilization effect
 * CO2 rocket
 * COM DEV International
 * COMPASS-2
 * CONSERT
 * CONTOUR
 * CORA dataset
 * CORONA (rocket)
 * COSMIC-2
 * COSMO-1
 * COSMO-SkyMed
 * COSMOS International
 * COSMOSOMAS
 * COSPAR international reference atmosphere
 * CP Boötis
 * CP Lacertae
 * CP Puppis
 * CP violation
 * CP-823/U
 * CP6 (satellite)
 * CPD−57°2874
 * CQ Camelopardalis
 * CRRES
 * CS Camelopardalis
 * CS-4
 * CSA Scientific Research on the International Space Station
 * CSES Mission
 * CSIRO
 * CSIRO Oceans and Atmosphere
 * CSTS
 * CT Chamaeleontis
 * CT Serpentis
 * CTA-102
 * CTD (instrument)
 * CTL-mediated cytotoxicity
 * CU Spaceflight
 * CU Virginis
 * CUORE
 * CUTE-1.7 + APD
 * CUTE-1.7 + APD II
 * CVSO 30
 * CW Leonis
 * CX Canis Majoris
 * CXOU J061705.3+222127
 * CXOU J164710.2−455216
 * CYP119A1
 * Cab Calloway
 * Cabane Choucoune
 * Cabannes (crater)
 * Cabaret
 * Cabaret (musical)
 * Cabaret Cornichon
 * Cabaret de L'Enfer
 * Cabaret des Quat'z'Arts
 * Cabaret du Ciel
 * Cabaret du Néant
 * Cabbeling
 * Cabeus (crater)
 * Cabify
 * Cabin Boy
 * Cabinet of curiosities
 * Cable bacteria
 * Cabled observatory
 * Cabo Wabo
 * Cabo da Roca
 * Cachalot (novel)
 * Cachaça (nightclub)
 * Cache Creek Ocean
 * Cachecam
 * Cachet Fault
 * Cadarache
 * Cadejo Macula
 * Cadent house
 * Cadillac Palace Theatre
 * Cadran solaire
 * Caelum
 * Caelum Supercluster
 * Caesar Jenkyns
 * Caesar's Comet
 * Cafe con Leche (Sunday party)
 * Caffeine-induced sleep disorder
 * Café 't Mandje
 * Café d'Anvers (Club)
 * Café de la Rotonde
 * Cage bed
 * Caged Desires
 * Caged Fury (1989 film)
 * Cageworld series
 * Cagigal Observatory
 * Cagliari Observatory
 * Cahokia Woodhenge
 * Cai Lun (crater)
 * Cailleux (crater)
 * Cain's Cutthroats
 * Cairo Demographic Center
 * Cajal (crater)
 * Cajori (crater)
 * Cajun (rocket)
 * Cajun Dart
 * Cake (firework)
 * Cal Langley
 * CalSky
 * Calabash Nebula
 * Calabi flow
 * Calabi–Yau manifold
 * Calahorra (crater)
 * Calar Alto Legacy Integral Field Area Survey
 * Calar Alto Observatory
 * Calcareous
 * Calcareous grassland
 * Calcein
 * Calcid
 * Calciorthid
 * Calcisol
 * Calcium sulfide
 * Calcium triplet
 * Calcium-rich supernovae
 * Calcium–aluminium-rich inclusion
 * Calculating God
 * Caldanaerobacter
 * Caldanaerobacter uzonensis
 * Caldanaerobius
 * Caldanaerobius fijiensis
 * Caldanaerobius polysaccharolyticus
 * Caldanaerobius zeae
 * Caldanaerovirga
 * Calder (crater)
 * Caldicellulosiruptor
 * Caldicellulosiruptor bescii
 * Caldicellulosiruptor saccharolyticus
 * Caldicoprobacter algeriensis
 * Caldicoprobacter faecalis
 * Caldicoprobacter guelmensis
 * Caldicoprobacter oshimai
 * Caldilinea aerophila
 * Caldimicrobium rimae
 * Caldimicrobium thiodismutans
 * Caldisericum
 * Caldisphaera
 * Caldisphaeraceae
 * Caldithrix
 * Caldivirga
 * Caldococcus
 * Caldwell catalogue
 * Caleb Scharf
 * Caledonian Sleeper
 * Calends
 * Caleuche Chasma
 * Caliban (moon)
 * Caliban's War
 * Calibre (musician)
 * Caliche
 * California Academy of Sciences
 * California Extremely Large Telescope
 * California Girls (film)
 * California Limited
 * California Nebula
 * California River
 * California Science Center
 * California Space Authority
 * California Theatre (Los Angeles)
 * California Volcano Observatory
 * California Zephyr
 * California Zephyr (1949–1970)
 * California lunar sample displays
 * California v. Murray
 * Californians for Population Stabilization
 * Californium (video game)
 * Caligula (film)
 * Calippus (crater)
 * Call Girl (2012 film)
 * Call of Duty: Black Ops
 * Call of Duty: Ghosts
 * Call of Duty: Infinite Warfare
 * Callanish Stones
 * Callicrates (crater)
 * Calling All the Monsters
 * Calling Occupants of Interplanetary Craft
 * Calliphon of Croton
 * Callippic cycle
 * Callirrhoe (moon)
 * Callista trilogy
 * Callisto (moon)
 * Callows
 * Calmagite
 * Caloranaerobacter azorensis
 * Caloranaerobacter ferrireducens
 * Caloribacterium
 * Calories (story)
 * Calorimetric Electron Telescope
 * Caloris Group
 * Caloris Montes
 * Caloris Planitia
 * Caltech Submillimeter Observatory
 * Calusa Nature Center and Planetarium
 * Calvera (X-ray source)
 * Calvert DeForest
 * Calvin crater
 * Calvino (crater)
 * Calvin–Rehoboth Observatory
 * Calydon fossa
 * Calypso (moon)
 * Calypso Deep
 * Calán/Tololo Survey
 * Camazepam
 * Camazotz
 * Cambion
 * Cambisol
 * Cambria (journal)
 * Cambridge Interferometer
 * Cambridge Low Frequency Synthesis Telescope
 * Cambridge Observatory
 * Cambridge Optical Aperture Synthesis Telescope
 * Camelford water pollution incident
 * Camelopardalis
 * Camelopardalis in Chinese astronomy
 * Camelot (TV series)
 * Camelot (crater)
 * Camelot 30K
 * Camera, hand lens, and microscope probe
 * Cameron (crater)
 * Cameron Leslie (businessman)
 * Cameron Mitchell (Stargate)
 * Camille (Red Dwarf)
 * Camille 2000
 * Camille Cazedessus Jr.
 * Camille Flammarion Observatory
 * Camillo Leonardi
 * Camp Hazen
 * Camp bed
 * Campanus (crater)
 * Campanus of Novara
 * Campbell (Martian crater)
 * Campbell (lunar crater)
 * Campo Imperatore Near-Earth Object Survey
 * Campo del Cielo
 * Campylobacter
 * Camões (crater)
 * Can of Worms (Red Dwarf)
 * Can of Worms (film)
 * CanSat
 * Canada After Dark
 * Canada Centre for Mapping and Earth Observation
 * Canadarm
 * Canada–France–Hawaii Telescope
 * Canadian (train)
 * Canadian Advanced Nanospace eXperiment Program
 * Canadian Arrow
 * Canadian Association of Rocketry
 * Canadian Astronaut Corps
 * Canadian Cartographic Association
 * Canadian GeoAlliance
 * Canadian Geospace Monitoring
 * Canadian Geotechnical Journal
 * Canadian Hydrogen Intensity Mapping Experiment
 * Canadian Institute for Theoretical Astrophysics
 * Canadian Institute of Geomatics
 * Canadian Journal of Earth Sciences
 * Canadian Journal of Remote Sensing
 * Canadian Land Surface Scheme
 * Canadian Penning Trap Mass Spectrometer
 * Canadian Reflections
 * Canadian Remote Sensing Society
 * Canadian Shield
 * Canadian Sleep Society
 * Canadian Society of Soil Science
 * Canadian Space Agency
 * Canadian Sport Parachuting Association
 * Canadian Youth Climate Coalition
 * Canadian system of soil classification
 * Canal
 * Canal Room
 * Canberra Deep Space Communication Complex
 * Canceled Apollo missions
 * Canceled Space Shuttle missions
 * Cancer (astrology)
 * Cancer (constellation)
 * Cancer Minor (constellation)
 * Cancer in Chinese astronomy
 * Cancer slope factor
 * Candas Jane Dorsey
 * Candice Hansen-Koharcheck
 * Candidatus Brocadia anammoxidans
 * Candidatus Desulforudis audaxviator
 * Candidatus Scalindua
 * Candor Chasma
 * Candy
 * Candy Stripe Nurses
 * Candy and a Currant Bun
 * Candy apple
 * Candy corn
 * Candy pumpkin
 * Canecão Mineiro nightclub fire
 * Canes II Group
 * Canes Venatici
 * Canes Venatici I (dwarf galaxy)
 * Canes Venatici II (dwarf galaxy)
 * Canes Venatici in Chinese astronomy
 * Canfield joint
 * Canfield ocean
 * Canis Major
 * Canis Major Overdensity
 * Canis Major in Chinese astronomy
 * Canis Minor
 * Canis Minor in Chinese astronomy
 * Canis-Minorids
 * Cannes Mandelieu Space Center
 * Cannibal Terror
 * Cannibal film
 * Cannibal! The Musical
 * Canning Basin
 * Canning Randy
 * Cannizzaro (crater)
 * Cannon (crater)
 * Canon Episcopi
 * Canon of Eclipses
 * Canon of Kings
 * Canonical quantum gravity
 * Canonical units
 * Canopus
 * Canopus (mythology)
 * Canopus 2
 * Canopus Hill Observatory
 * Canopus in Argos
 * Canopy bed
 * Canopy interception
 * Canso (Martian crater)
 * Cantera (stone)
 * Cantilever enhanced photoacoustic spectroscopy
 * Cantor (crater)
 * Canyon (satellite)
 * Canyon Diablo (meteorite)
 * Caotun Night Market
 * Cap carbonate
 * Capacitance probe
 * Capacitively coupled plasma
 * Cape (geography)
 * Cape Baba
 * Cape Canaveral Launch Complex 1
 * Cape Canaveral Launch Complex 10
 * Cape Canaveral Launch Complex 14
 * Cape Canaveral Launch Complex 15
 * Cape Canaveral Launch Complex 16
 * Cape Canaveral Launch Complex 19
 * Cape Canaveral Launch Complex 2
 * Cape Canaveral Launch Complex 25
 * Cape Canaveral Launch Complex 26
 * Cape Canaveral Launch Complex 29
 * Cape Canaveral Launch Complex 3
 * Cape Canaveral Launch Complex 30
 * Cape Canaveral Launch Complex 31
 * Cape Canaveral Launch Complex 34
 * Cape Canaveral Launch Complex 4
 * Cape Canaveral Launch Complex 43
 * Cape Canaveral Launch Complex 5
 * Cape Canaveral Launch Complex 9
 * Cape Canaveral Space Force Station
 * Cape Canaveral Space Launch Complex 20
 * Cape Canaveral Space Launch Complex 37
 * Cape Chelyuskin
 * Cape Dezhnev
 * Cape Eluanbi
 * Cape Fligely
 * Cape Flissingsky
 * Cape Froward
 * Cape Horn
 * Cape Nordkinn
 * Cape Photographic Catalogue
 * Cape Prince of Wales
 * Cape Provinces
 * Cape St. Charles
 * Cape Town Treaty
 * Cape Tribulation (Mars)
 * Cape Verde (Mars)
 * Cape York (Mars)
 * Cape York International Spaceport
 * Cape York Peninsula
 * Cape York meteorite
 * Capella
 * Capella (crater)
 * Capella Space
 * Capilla Peak Observatory
 * Capillary action
 * Capillary flow porometry
 * Capillary fringe
 * Capitol Cinema (Ottawa)
 * Capitol Limited
 * Capitol Limited (B&O train)
 * Capitol Theatre (New York City)
 * Capitol Theatre (Windsor, Ontario)
 * Capnophile
 * Capote (crater)
 * Cappello romano
 * Capri Mensa
 * Capricorn (astrology)
 * Capricorn One
 * Capricornio (rocket)
 * Capricornus
 * Capricornus in Chinese astronomy
 * Captain Black (Captain Scarlet)
 * Captain Blue (Captain Scarlet)
 * Captain EO
 * Captain Future
 * Captain Haddock
 * Captain Harlock
 * Captain Ken
 * Captain Kremmen
 * Captain Marvel (film)
 * Captain Olimar
 * Captain Power and the Soldiers of the Future
 * Captain Scarlet (character)
 * Captain Scarlet and the Mysterons
 * Captain Scarlet vs. the Mysterons
 * Captain Sternn
 * Captain Stormfield's Visit to Heaven
 * Captain Underpants and the Attack of the Talking Toilets
 * Captain Video and His Video Rangers
 * Captain Z-Ro
 * Captain's Holiday
 * Captive State
 * Captive Universe
 * Capture the Flag (film)
 * Capuanus (crater)
 * Car Wash (film)
 * Caramel apple
 * Caramel corn
 * Caravaggio (crater)
 * Caravan of Courage: An Ewok Adventure
 * Carbogen
 * Carbon Balance and Management
 * Carbon Dioxide Information Analysis Center
 * Carbon Disclosure Project
 * Carbon Trade Watch
 * Carbon arc welding
 * Carbon chauvinism
 * Carbon cycle
 * Carbon detonation
 * Carbon dioxide in Earth's atmosphere
 * Carbon dioxide scrubber
 * Carbon monoxide
 * Carbon nanotube
 * Carbon planet
 * Carbon respiration
 * Carbon star
 * Carbon-based life
 * Carbon-burning process
 * Carbon-to-nitrogen ratio
 * Carbonate compensation depth
 * Carbonates and Evaporites
 * Carbonates on Mars
 * Carboxydothermus
 * Carboxydothermus ferrireducens
 * Carboxydothermus islandicus
 * Carboxydothermus pertinax
 * Carboxydothermus siderophilus
 * Carbromal
 * Carbubarb
 * Cardanus (crater)
 * Cardiac rhythm problems during space flight
 * Cardiff Rift
 * Cardinal (train)
 * Cardinal sign (astrology)
 * Carducci (crater)
 * Cardy formula
 * Careem
 * Career Achievement Award
 * Carefree sundial
 * Careful with That Axe, Eugene
 * Carey mask
 * Cargo (2009 film)
 * Cargo (2019 film)
 * Cargo Dragon C208
 * Cargo spacecraft
 * Carhenge
 * Caribbean Cinemas
 * Carina (constellation)
 * Carina Dwarf Spheroidal Galaxy
 * Carina Nebula
 * Carina OB1
 * Carina OB2
 * Carina in Chinese astronomy
 * Carina–Sagittarius Arm
 * Cariocecus
 * Carkeek Observatory
 * Carl A. Wiley
 * Carl A. Wirtanen
 * Carl August von Steinheil
 * Carl Blaze
 * Carl Bremiker
 * Carl Charlier
 * Carl Clarence Kiess
 * Carl Cox
 * Carl Critchlow
 * Carl E. Heiles
 * Carl E. Walz
 * Carl Frederik Fearnley
 * Carl Friedrich Gauss
 * Carl Gottlieb Ehler
 * Carl Gustav Witt
 * Carl Hollitzer
 * Carl J. Meade
 * Carl Keenan Seyfert
 * Carl Laemmle
 * Carl Leo Stearns
 * Carl Ludwig Christian Rümker
 * Carl Otto Lampland
 * Carl R. Disch
 * Carl Runge
 * Carl Sagan
 * Carl Sagan Institute
 * Carl Sagan Medal
 * Carl Sagan Memorial Award
 * Carl Størmer
 * Carl Theodor Albrecht
 * Carl Theodor Anger
 * Carl W. Akerlof
 * Carl W. Hergenrother
 * Carl Wilhelm Wirtz
 * Carl Wolfgang Benjamin Goldschmidt
 * Carl Zeiss
 * Carl Zeiss AG
 * Carl Zeiss Meditec
 * Carl Zeiss Planar 50mm f/0.7
 * Carl Zeiss SMT
 * Carl-Gustaf Rossby Research Medal
 * Carl-Zeiss-Stiftung
 * Carle M. Pieters
 * Carleton (crater)
 * Carlini (crater)
 * Carlo Cattaneo (mathematician)
 * Carlo Resoort
 * Carlos Del Castillo
 * Carlos Dengler
 * Carlos Frenk
 * Carlos I. Noriega
 * Carlos Jaschek
 * Carlos José Lambert
 * Carlos Lousto
 * Carlos Segers
 * Carlos Torres (astronomer)
 * Carlos Ulrrico Cesco
 * Carlos Varsavsky
 * Carlota Escutia Dotti
 * Carlotta Maury
 * Carlsberg Fault zone
 * Carlsberg Meridian Telescope
 * Carlsbergite
 * Carlton Inn
 * Carlton R. Pennypacker
 * Carlyle Smith Beals
 * Carme (moon)
 * Carme group
 * Carmel Head Thrust
 * Carmelau Monestime
 * Carmelle Robert
 * Carmichael (crater)
 * Carmo Planetarium
 * Carn Menyn
 * Carnac stones
 * Carnal Madness
 * Carnarvon Basin
 * Carnarvon Tracking Station
 * Carnarvon xeric shrublands
 * Carnarvon, Western Australia
 * Carne (1968 film)
 * Carnegie telescope
 * Carnets de Géologie
 * Carnewas and Bedruthan Steps
 * Carnival (Bear novel)
 * Carnival of Lost Souls
 * Carnival of the Animals (ballet)
 * Carnivores (video game)
 * Carnot (crater)
 * Carny (1980 film)
 * Carol Danvers
 * Carol Heyer
 * Carol Jo Crannell
 * Carolan (crater)
 * Carole & Tuesday
 * Carole Ann Haswell
 * Carole Jordan
 * Carole Mundell
 * Carolin Crawford
 * Carolina Special
 * Carolina Villagrán
 * Caroline Aigle
 * Caroline Herschel
 * Caroline Herzenberg
 * Caroline M. Solomon
 * Caroline Smith (scientist)
 * Carolyn Meinel
 * Carolyn Porco
 * Carolyn S. Griner
 * Carolyn S. Shoemaker
 * Carpainter
 * Carpathian Mountains
 * Carpe Jugulum
 * Carpenter (crater)
 * Carpenter Street (Star Trek: Enterprise)
 * Carpenter v. United States
 * Carpo (moon)
 * Carr (landform)
 * Carrel (crater)
 * Carrie Anderson
 * Carrillo (crater)
 * Carrington (crater)
 * Carrington Event
 * Carrying the Fire
 * Carse
 * Carson Beckett
 * Carson Daly
 * Carswell crater
 * Cartan (crater)
 * Cartan–Karlhede algorithm
 * Carte du Ciel
 * Carter constant
 * Cartes du Ciel
 * Carthay Circle Theatre
 * Cartographic censorship
 * Cartographic design
 * Cartographic expeditions to Greenland
 * Cartographic propaganda
 * Cartographica
 * Cartography
 * Cartography and Geographic Information Science
 * Cartography and Geographic Information Society
 * Cartography of Africa
 * Cartography of Europe
 * Cartography of Palestine
 * Cartopology
 * Cartosat
 * Cartosat-1
 * Cartosat-2
 * Cartosat-2A
 * Cartosat-2B
 * Cartosat-2C
 * Cartosat-2D
 * Cartosat-2E
 * Cartosat-2F
 * Cartosat-3
 * Cartouche (cartography)
 * Cartwheel Galaxy
 * Caru' cu Bere
 * Caruso (crater)
 * Carver (crater)
 * Cary 14 Spectrophotometer
 * Casa Grande (soil)
 * Casaba-Howitzer
 * Casatus (crater)
 * Cascade (train)
 * Cascade effect
 * Cascaded Arc Plasma Source
 * Cascades Volcano Observatory
 * Case hardening of rocks
 * Case is Altered, Eastcote
 * Cashel Lookout Formation
 * Casimir Marie Gaudibert
 * Casimir effect
 * Casius quadrangle
 * Casper (film)
 * Casper Meets Wendy
 * Casper's Halloween Special
 * Cassandra (Red Dwarf)
 * Cassandra Peterson
 * Cassegrain (crater)
 * Cassegrain Nasmyth
 * Cassegrain reflector
 * Cassini (Martian crater)
 * Cassini (lunar crater)
 * Cassini Regio
 * Cassini retirement
 * Cassini's laws
 * Cassini–Huygens
 * Cassiopeia (constellation)
 * Cassiopeia (film)
 * Cassiopeia (train)
 * Cassiopeia A
 * Cassiopeia Dwarf
 * Cassiopeia in Chinese astronomy
 * Castalia (spacecraft)
 * Castiglione (crater)
 * Castle Cinema
 * Castle Grayskull
 * Castle thunder (sound effect)
 * Castleween
 * Castor (star)
 * Castor Moving Group
 * Castor-Orbus
 * Cat (zodiac)
 * Cat Country (novel)
 * Cat Rambo
 * Cat's Eye Nebula
 * Cat-Women of the Moon
 * Cataclysmic variable star
 * Catacombs Nightclub Philadelphia
 * Catadioptric system
 * Catalan Space Agency
 * Catalina Real-time Transient Survey
 * Catalina Sky Survey
 * Catalina Station
 * Catalog of 5,268 Standard Stars Based on the Normal System N30
 * Catalog of Components of Double and Multiple Stars
 * Catalog of Nearby Habitable Systems
 * Catalog of Stellar Identifications
 * Catalogue of Galaxies and of Clusters of Galaxies
 * Catalogue of Nebulae and Clusters of Stars
 * Catalogue of Spectroscopic Binary Orbits
 * Catalogue of rotational velocities of the stars
 * Catalogues of Fundamental Stars
 * Catalogus Codicum Astrologorum Graecorum
 * Catalán (crater)
 * Catania Astrophysical Observatory
 * Cataphile
 * Cataplexy
 * Cataract bog
 * Catasterismi
 * Catastrophism
 * Catathrenia
 * Catatumbo lightning
 * Catchment hydrology
 * Catena (soil)
 * Catena Abulfeda
 * Catena Artamonov
 * Catena Yuri
 * Catequilla
 * Caterina Scarpellini
 * Catharina (crater)
 * Catharine Conley
 * Catharine Garmany
 * Cathedral of St. Michael and St. Gudula
 * Catherine Barton
 * Catherine Cesarsky
 * Catherine Coleman
 * Catherine Corrigan
 * Catherine Heymans
 * Catherine King (scientist)
 * Catherine Nakalembe
 * Catherine Ritz
 * Catherine Wolfe Bruce
 * Catherine wheel (firework)
 * Catherine, Baroness d'Erlanger
 * Cathie Clarke
 * Cathryn Mitchell
 * Cathy Olkin
 * Cation-exchange capacity
 * Catlin Seaview Survey
 * Catoptrics
 * Catra
 * Catriona Sparks
 * Catseye (novel)
 * Catullus (crater)
 * Caucasus Mountains
 * Cauchy (crater)
 * Cauchy surface
 * Cauldron (video game)
 * Cauldron II: The Pumpkin Strikes Back
 * Causal dynamical triangulation
 * Causal fermion systems
 * Causal patch
 * Causal sets
 * Causal structure
 * Causality (video game)
 * Causality conditions
 * Cause and Effect (Star Trek: The Next Generation)
 * Cavalerius (crater)
 * Cavalier (N&W train)
 * Cavallo di fuoco
 * Cave
 * Cave (song)
 * Cave Clan
 * Cave dweller
 * Cave of Dogs
 * Cave of Reveillon
 * Cave of Treasures
 * Cave popcorn
 * Cave survey
 * Cave5D
 * Cavea-B
 * Cavendish (crater)
 * Cavendish Astrophysics Group
 * Cavendish experiment
 * Caventou (crater)
 * Caves of Mars Project
 * Cavity ring-down spectroscopy
 * Cawthron Atkinson Observatory
 * Caxias (crater)
 * Cayley (crater)
 * Cayrel's Star
 * Caza
 * Cebes
 * Cebrenia quadrangle
 * Cebreros Station
 * Cecil (soil)
 * Cecil Airport
 * Cecil Chubb
 * Cecilia Ceccarelli
 * Cecilia Payne-Gaposchkin
 * Cecilia Tan
 * Cedric Gervais
 * Cefn-cerig road
 * Cefora
 * Ceibwr Bay Fault
 * Celaeno (star)
 * Celatone
 * Celaya fireworks disaster
 * Cele Goldsmith Lalli
 * Celebrate! Tokyo Disneyland
 * Celebration of Light
 * Celephaïs
 * Celestia
 * Celestial Matters
 * Celestial Mechanics and Dynamical Astronomy
 * Celestial Observatory
 * Celestial Sphere Woodrow Wilson Memorial
 * Celestial cartography
 * Celestial coordinate system
 * Celestial equator
 * Celestial event
 * Celestial mechanics
 * Celestial navigation
 * Celestial pole
 * Celestial sphere
 * Celestial spheres
 * Celestis
 * Celestri
 * Celestron
 * Celio Calcagnini
 * Cellular confinement
 * Celsius (crater)
 * Cementation (geology)
 * Cemento
 * Cenarchaeaceae
 * Cenarchaeales
 * Cenarchaeum
 * Cenarchaeum symbiosum
 * Cenote
 * Cenozoic
 * Cenozoic Research Laboratory
 * Censorinus (crater)
 * Census of Marine Life
 * Centalun
 * Centaur (rocket stage)
 * Centaur (small Solar System body)
 * Centaure (rocket)
 * Centauri Montes
 * Centauro event
 * Centaurus
 * Centaurus (spacecraft mission)
 * Centaurus A
 * Centaurus A/M83 Group
 * Centaurus Cluster
 * Centaurus X-3
 * Centaurus in Chinese astronomy
 * Centennial Challenges
 * Centennial Planetarium
 * Center Theater (Hartsville, South Carolina)
 * Center Theatre (New York City)
 * Center for Advanced Materials, University of Houston
 * Center for Air and Space Law
 * Center for Biofilm Engineering
 * Center for Coastal & Ocean Mapping
 * Center for Computational Relativity and Gravitation
 * Center for Detectors
 * Center for Earth Resources Observation and Science
 * Center for Earthquake Studies
 * Center for Environmental Philosophy
 * Center for Gravitational Wave Astronomy
 * Center for Integrated Plasma Studies
 * Center for Life Detection Science
 * Center for Meteorite Studies
 * Center for Microbial Oceanography: Research and Education
 * Center for Nanophase Materials Sciences
 * Center for Nanoscale Materials
 * Center for Near-Earth Object Studies
 * Center for Southeastern Tropical Advanced Remote Sensing
 * Center for Studies and Research in Aeronautical Medicine
 * Center for UFO Studies
 * Center for Urban and Regional Analysis
 * Center of Astronomy (Heidelberg University)
 * Center of Research in Astronomy, Astrophysics, and Geophysics
 * Center-of-momentum frame
 * Centered in the Universe
 * Centers for Space Oceanography
 * Centiloquium
 * Central African Republic
 * Central Air Data Computer
 * Central American Pacific Islands
 * Central American pygmy owl
 * Central Basin Spreading Center
 * Central Bureau for Astronomical Telegrams
 * Central Geological Service
 * Central Highlands (Madagascar)
 * Central Idaho Dark Sky Reserve
 * Central Indo-Pacific
 * Central Laser Facility
 * Central Line (Tanzania)
 * Central Mangrove Wetland
 * Central Molecular Zone
 * Central Station (gay club, Moscow, Russia)
 * Central Station (gay club, Saint-Petersburg, Russia)
 * Central configuration
 * Central hypoventilation syndrome
 * Central massive object
 * Central meridian (planets)
 * Central nervous system effects from radiation exposure during spaceflight
 * Central sleep apnea
 * Centre Spatial Universitaire Montpellier-Nîmes
 * Centre de données astronomiques de Strasbourg
 * Centre for Astrophysics and Supercomputing
 * Centre for Astrophysics of the University of Porto
 * Centre for Computational Geography
 * Centre for International Climate and Environmental Research
 * Centre for Life
 * Centre for Marine Living Resources & Ecology
 * Centre for Polar Observation & Modelling
 * Centre for Radiation, Chemical and Environmental Hazards
 * Centre interarmées d'essais d'engins spéciaux
 * Centrifugal mechanism of acceleration
 * Centrifuge Accommodations Module
 * Centro de Estudios Científicos
 * Centro de Investigaciones de Astronomia
 * Century Rain
 * Century leap year
 * Cepheid variable
 * Cepheus (constellation)
 * Cepheus (crater)
 * Cepheus OB1
 * Cepheus in Chinese astronomy
 * Ceramic discharge metal-halide lamp
 * Ceraunius Fossae
 * Ceraunius Tholus
 * Cerberus (constellation)
 * Cerberus Fossae
 * Cerberus Palus
 * Cercops
 * Cereal Killaz
 * Ceres (dwarf planet)
 * Ceres Connection
 * Ceres Polar Lander
 * Ceres Robotics
 * Ceres Storm
 * Cerise (satellite)
 * Cernan Earth and Space Center
 * Cerro Armazones Observatory
 * Cerro Aspero Batholith
 * Cerro Chajnantor Atacama Telescope
 * Cerro Colorado Formation
 * Cerro Pachón
 * Cerro Tololo Inter-American Observatory
 * Cerro Toro
 * Cerro de la Calavera
 * Cerro do Jarau crater
 * Cerulli (crater)
 * Cervantes (crater)
 * Cesare Cremonini (philosopher)
 * Cesare Marsili
 * Cestrum nocturnum
 * Cetus
 * Cetus Dwarf
 * Cetus in Chinese astronomy
 * Cevin Fisher
 * CfA 1.2 m Millimeter-Wave Telescope
 * CfA Redshift Survey
 * CfA2 Great Wall
 * Ch'od
 * Cha 110913−773444
 * ChaHα8
 * ChaNGa
 * Chabot Space and Science Center
 * Chacaltaya
 * Chaco Culture National Historical Park
 * Chaco owl
 * Chacornac (crater)
 * Chad
 * Chad Trujillo
 * Chadwick (crater)
 * Chafe (crater)
 * Chaffee (crater)
 * Chaikovskij (crater)
 * Chained Girls
 * Chained for Life
 * Chairman of the Indian Space Research Organisation
 * Chaitra
 * Chakkamkulangara Siva Temple
 * Chakrulo
 * Chalce Montes
 * Chaldene
 * Chalice (superhero character)
 * Challenge ProMode Arena
 * Challenger (1990 film)
 * Challenger (train)
 * Challenger Center for Space Science Education
 * Challenger Colles
 * Challenger Deep
 * Challenger Society for Marine Science
 * Challenger flag
 * Challenger: The Final Flight
 * Challis (crater)
 * Chalonge (crater)
 * Cham calendar
 * Chamaeleon
 * Chamaeleon complex
 * Chamaeleon in Chinese astronomy
 * Chamberlin (lunar crater)
 * Chamberlin trimetric projection
 * Chamberlin–Moulton planetesimal hypothesis
 * Chambliss Amateur Achievement Award
 * Chambliss Astronomical Writing Award
 * Chambord meteorite
 * Chameleon (The Twilight Zone)
 * Chameleon particle
 * Champagne Supernova
 * Champagne flow model
 * Champion (train)
 * Champion Oil Field
 * Champollion (crater)
 * Champollion (spacecraft)
 * Chancey Juday
 * Chand Par Chadayee
 * Chanda Jog
 * Chanda Prescod-Weinstein
 * Chandler (crater)
 * Chandra
 * Chandra Deep Field South
 * Chandra Wickramasinghe
 * Chandra X-ray Observatory
 * Chandramauli Upadhyay
 * Chandrasekhar limit
 * Chandrasekhar number
 * Chandrasekhar polarization
 * Chandrasekhar potential energy tensor
 * Chandrasekhar virial equations
 * Chandrasekhar's variational principle
 * Chandrasekhar's white dwarf equation
 * Chandrasekhar–Kendall function
 * Chandrasekhar–Page equations
 * Chandrashekhar J. Joshi
 * Chandravakyas
 * Chandrayaan programme
 * Chandrayaan-1
 * Chandrayaan-2
 * Chandrayaan-3
 * Chang Heng (crater)
 * Chang Kee Jung
 * Chang'e
 * Chang'e 1
 * Chang'e 2
 * Chang'e 3
 * Chang'e 4
 * Chang'e 5
 * Chang'e 5-T1
 * Chang'e 6
 * Chang'e 7
 * Change Your Mind (Steven Universe)
 * Changxi
 * Chang–Refsdal lens
 * Channel (geography)
 * Channel River
 * Channel pattern
 * Channel types
 * Chanquillo
 * Chant (crater)
 * Chantrey Inlet
 * Chan–Paton factor
 * Chao Meng-Fu (crater)
 * Chaochuan Formation
 * Chaoite
 * Chaos (cosmogony)
 * Chaos Canyon
 * Chaos Walking (film)
 * Chaos de Montpellier-le-Vieux
 * Chaos on Deponia
 * Chaos terrain
 * Chaotic rotation
 * Chapais (crater)
 * Chaplygin (crater)
 * Chaplygin gas
 * Chapman (crater)
 * Chapman Medal
 * Chappe (crater)
 * Chappell (crater)
 * Chapter 10: The Passenger
 * Chapter 11: The Heiress
 * Chapter 12: The Siege
 * Chapter 13: The Jedi
 * Chapter 14: The Tragedy
 * Chapter 15: The Believer
 * Chapter 1: The Mandalorian
 * Chapter 24
 * Chapter 2: The Child
 * Chapter 3: The Sin
 * Chapter 4: Sanctuary
 * Chapter 5: The Gunslinger
 * Chapter 6: The Prisoner
 * Chapter 7: The Reckoning
 * Chapter 8: Redemption
 * Chapter 9: The Marshal
 * Chapter Sixty-One: Halloween
 * Chapterhouse: Dune
 * Characteristic energy
 * Characteristic velocity
 * Charge Composition Explorer
 * Charge modulation spectroscopy
 * Charge-coupled device
 * Charged Particle Lunar Environment Experiment
 * Charged-device model
 * Chargino
 * Chariot (Chinese constellation)
 * Chariots of the Gods (film)
 * Chariots of the Gods?
 * Charitum Montes
 * Charity Shoal crater
 * Charles A. Beichman
 * Charles Adams (seismologist)
 * Charles Alexander Shain
 * Charles Arden-Clarke
 * Charles Augustus Young
 * Charles Babbage
 * Charles Band
 * Charles Bartley
 * Charles Bassett
 * Charles Binger
 * Charles Bolden
 * Charles Bruce Stephenson
 * Charles C. Steidel
 * Charles Camarda
 * Charles Czeisler
 * Charles D. Gemar
 * Charles D. Walker
 * Charles Darwin
 * Charles Dillon Perrine
 * Charles Doolittle Walcott Medal
 * Charles Duke
 * Charles E. Brady Jr.
 * Charles Eastlake Smith
 * Charles Edward Barns
 * Charles Edward St. John
 * Charles Egerton (Indian Army officer)
 * Charles Elachi
 * Charles Elmer
 * Charles Emile Stuyvaert
 * Charles Gifford (astronomer)
 * Charles Glover Barkla
 * Charles Greeley Abbot
 * Charles Green (astronomer)
 * Charles H. Holbrow
 * Charles H. Townes
 * Charles Hailey
 * Charles Henry Parkhurst
 * Charles Hugh Smiley
 * Charles Igwe Arizechukwu
 * Charles J. Donlan
 * Charles J. Precourt
 * Charles Jacquinot
 * Charles Jasper Joly
 * Charles Jean-Pierre Lallemand
 * Charles K. Johnson
 * Charles Kay Ogden
 * Charles Kohlhase
 * Charles L. Bennett
 * Charles L. Veach
 * Charles Lane Poor
 * Charles Lethbridge Kingsford
 * Charles Malapert
 * Charles Medhurst
 * Charles Messier
 * Charles N. Brown
 * Charles O. Hobaugh
 * Charles P. de Saint-Aignan
 * Charles Piazzi Smyth
 * Charles Platt (author)
 * Charles Pollard Olivier
 * Charles Pritchard
 * Charles Pym (Conservative politician)
 * Charles R. Alcock
 * Charles R. Bentley
 * Charles Rabot
 * Charles Richards (NASA engineer)
 * Charles S. Cockell
 * Charles S. Venable
 * Charles Schneeman
 * Charles Schnetzler
 * Charles Schuchert Award
 * Charles Sherman (artist)
 * Charles Simonyi
 * Charles Skinner (geologist)
 * Charles Stokes (collector)
 * Charles Stuart Bowyer
 * Charles T. Kowal
 * Charles Todd (pioneer)
 * Charles Vélain
 * Charles W. Juels
 * Charles W. Misner
 * Charles Wheatstone
 * Charles Whyte
 * Charles Wilkes
 * Charles William Adams (surveyor)
 * Charles William Barkley
 * Charles Wylie (astronomer)
 * Charles Yerkes
 * Charles de Lint
 * Charlevoix crater
 * Charley Aylett
 * Charley Lippincott
 * Charlie Atom
 * Charlie Had One But He Didn't Like It, So He Gave It To Us
 * Charlie Rose
 * Charlie Spivak
 * Charlie and the Great Glass Elevator
 * Charlier (Martian crater)
 * Charlier (lunar crater)
 * Charlotte (TV series)
 * Charlottetown (soil series)
 * Charon (moon)
 * Charpai
 * Chart Rulership
 * Chart datum
 * Chas Chandler
 * Chaser (video game)
 * Chasing the Moon (2019 film)
 * Chasles' theorem (gravitation)
 * Chasm City
 * Chasma
 * Chasma Boreale
 * Chasqui I
 * Chassigny (meteorite)
 * Chatla
 * Chatter mark
 * Chaturdashi
 * Chaturthi
 * Chaucer (crater)
 * Chauvenet (crater)
 * Chaxiraxi
 * CheMin
 * Chebyshev (crater)
 * Check It Out! with Dr. Steve Brule
 * Check dam
 * Cheerleaders Beach Party
 * Chef & Brewer
 * Cheick Modibo Diarra
 * Chekhov (crater)
 * Chelativorans composti
 * Chelmos Observatory
 * Chelsea Handler
 * Chelsea Potter
 * Chelyabinsk meteor
 * Chelyabinsk meteorite
 * ChemXSeer
 * Chemical cycling
 * Chemical imaging
 * Chemical oxygen demand
 * Chemical oxygen generator
 * Chemical purity
 * Chemical safety assessment
 * Chemical shift
 * Chemical transport model
 * Chemical vapor deposition
 * Chemical waste
 * Chemically inert
 * Chemically peculiar star
 * Chemiluminescence
 * Chemistry and Camera complex
 * Chemistry of wetland dredging
 * Chemosphere (journal)
 * Chemosynthesis
 * Chen Dong (astronaut)
 * Chen Jin Lang
 * Chen Quan
 * Cheomseongdae
 * Cheonsang Yeolchabunyajido
 * Cher Ng
 * Cherenkov Array at Themis
 * Cherenkov Telescope Array
 * Chergach
 * Chernobog
 * Chernobyl groundwater contamination
 * Chernozem
 * Chernyshev (crater)
 * Chern–Simons form
 * Cherokee spiritual beliefs
 * Cherry Springs State Park
 * Cherry bomb
 * Cheryl Morgan
 * Chesapeake Bay Interpretive Buoy System
 * Chesapeake Bay impact crater
 * Chesed
 * Chesley Bonestell
 * Chester Burleigh Watts
 * Chester Lyman
 * Chesterton (crater)
 * Chesty Morgan (band)
 * Chevallier (crater)
 * Chevron (land form)
 * Chevy Chase
 * Chewbacca
 * Chez Ami Supper Club
 * Chez Ntemba
 * Chi Andromedae
 * Chi Aquarii
 * Chi Aquilae
 * Chi Aurigae
 * Chi Boötis
 * Chi Cancri
 * Chi Capricorni
 * Chi Carinae
 * Chi Cassiopeiae
 * Chi Centauri
 * Chi Ceti
 * Chi Cygni
 * Chi Draconis
 * Chi Eridani
 * Chi Geminorum
 * Chi Herculis
 * Chi Hydrae
 * Chi Leonis
 * Chi Lupi
 * Chi Ophiuchi
 * Chi Orionis
 * Chi Pegasi
 * Chi Persei
 * Chi Piscium
 * Chi Puppis
 * Chi Sagittarii
 * Chi Scorpii
 * Chi Serpentis
 * Chi Tauri
 * Chi Ursae Majoris
 * Chi Virginis
 * Chi Virginis b
 * Chi and Me
 * Chi-Won Yoon
 * Chi1 Hydrae
 * Chi1 Orionis
 * Chi1 Sagittarii
 * Chi2 Hydrae
 * Chi2 Orionis
 * Chi3 Sagittarii
 * Chiaki Mukai
 * Chiang K'ui (crater)
 * Chiang Mai Night Bazaar
 * Chiara Mingarelli
 * Chibiusa
 * Chicago Air Shower Array
 * Chicago City Limits
 * Chicago Limited (NYC train)
 * Chicago Night Express
 * Chicago Pile-1
 * Chicago Pile-3
 * Chicago Pile-5
 * Chicago Theatre
 * Chichen Itza
 * Chickasaw meridian
 * Chico Community Observatory
 * Chicomecōātl
 * Chicxulub crater
 * Chicxulub impactor
 * Chief (train)
 * Chief of Space Operations
 * Chief of the Astronaut Office
 * Chiemgau impact hypothesis
 * Chikyū
 * Chilakamarthi Prabhakar Chakravarthy Sharma
 * Chilam Balam
 * Chilbolton Observatory
 * Chilca Launch Range
 * Child Museum (Cairo)
 * Childhood's End
 * Childhood's End (Pink Floyd song)
 * Childhood's End (miniseries)
 * Children Shouldn't Play with Dead Things
 * Children of Dune
 * Children of God (novel)
 * Children of Time (Star Trek: Deep Space Nine)
 * Children of Time (novel)
 * Children of a Dead Earth
 * Children of the Gods
 * Children of the Lens (novel)
 * Children of the Night (1991 film)
 * Children of the Whales
 * Children's Environmental Exposure Research Study
 * Childrens Hospital
 * Chilonatalus
 * Chimborazo
 * Chimera (spacecraft)
 * China Academy of Launch Vehicle Technology
 * China Academy of Space Technology
 * China Aerodynamics Research and Development Center
 * China Aerospace Science and Industry Corporation
 * China Aerospace Science and Technology Corporation
 * China Carbon Forum
 * China Chang Feng
 * China Dark Matter Experiment
 * China Fusion Engineering Test Reactor
 * China Geological Survey
 * China Manned Space Engineering Office
 * China Miéville
 * China National Space Administration
 * China Pollution Map Database
 * China exclusion policy of NASA
 * China's spaceplane program
 * China, IL
 * ChinaSat 10
 * ChinaSat 12
 * ChinaSat 9
 * ChinaSat 9A
 * Chinasat
 * Chinatown, Vancouver
 * China–Brazil Earth Resources Satellite program
 * Chincoteague (crater)
 * Chinese Deep Space Network
 * Chinese Docking Mechanism
 * Chinese Future Giant Telescope
 * Chinese Giant Solar Telescope
 * Chinese Lunar Exploration Program
 * Chinese New Year's Eve
 * Chinese Society of Astronautics
 * Chinese astrology
 * Chinese astronomy
 * Chinese constellations
 * Chinese creation myths
 * Chinese fireworks
 * Chinese large modular space station
 * Chinese names in space
 * Chinese reusable experimental spacecraft
 * Chinese space program
 * Chinese spirit possession
 * Chinese star maps
 * Chinese star names
 * Chinese women in space
 * Chinese zodiac
 * Ching-Te (crater)
 * Chinga meteorite
 * Chinguetti meteorite
 * Chinigchinix
 * Chip E.
 * Chirality (chemistry)
 * Chiron (hypothetical moon)
 * Chiron-type comet
 * Chiroptonyssus
 * Chirp mass
 * Chitinozoan
 * Chiyli crater
 * Chladni (crater)
 * Chloracidobacterium
 * Chloracne
 * Chloral betaine
 * Chloral hydrate
 * Chloralodol
 * Chloride-bearing deposits on Mars
 * Chlorine gas poisoning
 * Chlorobutanol
 * Chloroflexus aggregans
 * Chlorophenol red
 * Chlorotrifluorosilane
 * Chloryl fluoride
 * Chocolate bomb
 * Choctaw Rocket
 * Choctaw meridian
 * Choctaw mythology
 * Chofu Aerospace Center
 * Choghadiya
 * Choir wall of Chartres Cathedral
 * Choke Canyon
 * Cholinergic crisis
 * Chollian
 * Chondrite
 * Chondritic uniform reservoir
 * Chondrule
 * Chongqing Science and Technology Museum
 * Chonide orogeny
 * Chooz (experiment)
 * Chopin (crater)
 * Chopper Chicks in Zombietown
 * Choquequirao
 * Chord (astronomy)
 * Chorography
 * Chorology
 * Chriet Titulaer
 * Chris Achilleos
 * Chris Baker (artist)
 * Chris Carter (screenwriter)
 * Chris Chapman (seismologist)
 * Chris Cowie
 * Chris Cox (DJ)
 * Chris Elliott
 * Chris Fortier
 * Chris Foss
 * Chris Freeman (scientist)
 * Chris Hadfield
 * Chris Hardwick
 * Chris Hirata
 * Chris Impey
 * Chris Kemp
 * Chris Lake
 * Chris Leck
 * Chris Lintott
 * Chris Malinchak
 * Chris Moore (illustrator)
 * Chris Noth
 * Chris Paciello
 * Chris Pancratz
 * Chris Rapley
 * Chris Roberts (video game developer)
 * Chris Rush
 * Chris Spencer (actor)
 * Chris Tinney
 * Chris Turney
 * Chris Willrich
 * Christ Community Church
 * Christa McAuliffe
 * Christa McAuliffe Space Education Center
 * Christen Sørensen Longomontanus
 * Christer Fuglesang
 * Christfried Kirch
 * Christiaan Huygens
 * Christiaan Huygens Medal
 * Christian Astrology
 * Christian August Friedrich Peters
 * Christian Calson
 * Christian Doppler
 * Christian Guilleminault
 * Christian Gärtner
 * Christian Heinrich Friedrich Peters
 * Christian Horrebow
 * Christian Ludwig Gerling
 * Christian Ludwig Ideler
 * Christian Mayer (astronomer)
 * Christian Pollas
 * Christian T. Elvey
 * Christian Topography
 * Christian Wurstisen
 * Christian of Prachatice
 * Christian views on environmentalism
 * Christiane Bonnelle
 * Christina Hulbe
 * Christina Koch
 * Christina Richey
 * Christina Riesselman
 * Christine Darden
 * Christine Jones Forman
 * Christine Kirch
 * Christine Lane
 * Christine Siddoway
 * Christine Wilson (scientist)
 * Christmas Icetastrophe
 * Christmas on Mars
 * Christmas on the International Space Station
 * Christoffel symbols
 * Christoffer Schander
 * Christofilos effect
 * Christoforo Borri
 * Christoph Arnold
 * Christoph Grienberger
 * Christoph Rothmann
 * Christoph Scheiner
 * Christoph Sutter
 * Christopher Aikman
 * Christopher Anne Suczek
 * Christopher Blair
 * Christopher C. Kraft Jr.
 * Christopher Cassidy
 * Christopher Chyba
 * Christopher Clavius
 * Christopher Conselice
 * Christopher E. Gerty
 * Christopher Ferguson
 * Christopher Glein
 * Christopher Hansteen
 * Christopher Kochanek
 * Christopher Lawrence (DJ)
 * Christopher Lee
 * Christopher McKay
 * Christopher McKee
 * Christopher Nolan
 * Christopher Paolini
 * Christopher Scolese
 * Christopher Shy
 * Christopher Wanjek
 * Christopher Whall
 * Christopher Wren
 * Chrome (video game)
 * Chrome and Hot Leather
 * Chromism
 * Chromosphere
 * Chromo–Weibel instability
 * Chronic toxicity
 * Chronobiology
 * Chronobiotic
 * Chronocinematograph
 * Chronology of Pakistan's rocket tests
 * Chronology of discoveries of water on Mars
 * Chronology of the universe
 * Chronology protection conjecture
 * Chronon
 * Chronosequence
 * Chronostratigraphy
 * Chronotherapy (sleep phase)
 * Chronotherapy (treatment scheduling)
 * Chronotype
 * Chronozone
 * Chroococcidiopsis
 * Chrysalis (Star Trek: Deep Space Nine)
 * Chryse Alien
 * Chryse Planitia
 * Chryseobacterium frigidisoli
 * Chryseobacterium haifense
 * Chryseobacterium oranimense
 * Chryseobacterium solincola
 * Chrysler SERV
 * Chrysoine resorcinol
 * Chryssa Kouveliotou
 * Chrétien (crater)
 * Chthonian planet
 * Chu Silk Manuscript
 * Chu Ta (crater)
 * Chuck E. Cheese in the Galaxy 5000
 * Chuckie (DJ)
 * Chuhuiv Observational Station
 * Chukcha crater
 * Churchill Rocket Research Range
 * Chuseok
 * Chushiro Hayashi
 * Chute (gravity)
 * Château de Meudon
 * Ché OVNI
 * Chézy formula
 * Chía (goddess)
 * Chōzubachi
 * Chōzuya
 * Chŏng Ch'ŏl (crater)
 * Ciaphas Cain
 * Cibola Burn
 * Ciccaba
 * Cichus (crater)
 * Cid (soil)
 * Cider house
 * Cidoxepin
 * Ciel Satellite Group
 * Ciel-2
 * CieloBuio
 * Cilix (crater)
 * Cima Ekar Observing Station
 * Cimarron meridian
 * Cimon (robot)
 * Cinazepam
 * Cincinnati Limited
 * Cincinnati Observatory
 * Cincinnati Street Gas Lamps
 * Cinco (crater)
 * Cinder (novel)
 * Cine Rex
 * Cine TAM
 * CineStar IMAX Lahore
 * CineVista Theatres
 * Cinefamily
 * Cinema 16
 * Cinema Insomnia
 * Cinema Rex fire
 * Cinema Vox (Casablanca)
 * Cinema da Boca do Lixo
 * Cinema etiquette
 * Cinemas in Portland, Oregon
 * Cinemateca Uruguaya
 * Cinematheque
 * Cinerama Dome
 * Cinereous owl
 * Cinesphere
 * Cinex
 * Cinnabar boobook
 * Cinnamon basil
 * Cinnamon screech owl
 * Cinolazepam
 * Cinzia Verde
 * Circadian clock
 * Circadian rhythm
 * Circadian rhythm sleep disorder
 * Circasemidian rhythm
 * Circaseptan
 * Circinus
 * Circinus Galaxy
 * Circinus X-1
 * Circinus in Chinese astronomy
 * Circle (TV series)
 * Circle of equal altitude
 * Circle of latitude
 * Circle-Vision 360°
 * Circular dichroism
 * Circular orbit
 * Circular polarization
 * CircumArctic Rangifer Monitoring and Assessment Network
 * Circumbinary planet
 * Circumlunar trajectory
 * Circumnavigation world record progression
 * Circumplanetary disk
 * Circumpolar constellation
 * Circumpolar distribution
 * Circumpolar star
 * Circumstellar disc
 * Circumstellar dust
 * Circumstellar envelope
 * Circumstellar habitable zone
 * Circus Tavern, Manchester
 * Cirque
 * Cirque du Bout du Monde
 * Cirque glacier
 * Cirque stairway
 * Cirrus (rocket)
 * Cirrus Minor (song)
 * Cirrus cloud thinning
 * Cis-Neptunian object
 * Cisco TelePresence
 * Cislunar Explorers
 * Cissonius
 * Cistugo
 * Citcom
 * Cities of the Underworld
 * Citizen (app)
 * Citizens Against UFO Secrecy
 * Citizens Convention for Climate
 * Citizens for Public Justice
 * Citizens' Advisory Council on National Space Policy
 * Cittie of Yorke
 * City (journal)
 * City Limits (TV series)
 * City Night Line
 * City at World's End
 * City of Arts and Sciences
 * City of Erie v. Pap's A. M.
 * City of Illusions
 * City of Los Angeles (train)
 * City of Miami (train)
 * City of New Orleans (train)
 * City of Perth Skyworks
 * City of Portland (train)
 * City of San Francisco (train)
 * City of Sorcery
 * City of St. Louis (train)
 * City of the Chasch
 * City on the Moon
 * CityNightLine
 * CitySurf Globe
 * Cité de l'espace
 * Cité des Sciences et de l'Industrie
 * Ciuacoatl Mons
 * Civic Planetarium of Lecco
 * Civil time
 * Civilian Saucer Intelligence
 * Civilian Space eXploration Team
 * Civilization II
 * Civilization II: Test of Time
 * Civilization III
 * Civilization IV
 * Civilization IV: Beyond the Sword
 * Civilization Revolution
 * Civilization Revolution 2
 * Civilization: Beyond Earth
 * Civilization: Beyond Earth – Rising Tide
 * Ciénega
 * Clabon Allen
 * Claerwen Fault
 * Claes-Ingvar Lagerkvist
 * Claimed moons of Earth
 * Clairaut (crater)
 * Clairaut's theorem
 * Claire Armstrong
 * Claire Ellen Max
 * Claire Horwell
 * Claire Parkinson
 * Clangers
 * Clans of the Alphane Moon
 * Claptrap
 * Clara (film)
 * Clare Burrage
 * Clare Francis
 * Clare Parnell
 * Clarence Chant
 * Clarence N. Hickman
 * Clarence Syvertson
 * Clarence T. Jones Observatory
 * Clarion (company)
 * Claritas Fossae
 * Claritas Rupes
 * Clark (Martian crater)
 * Clark (lunar crater)
 * Clark Chapman
 * Clark Planetarium
 * Clarke Medal
 * Clarke number
 * Class of 1984
 * Classic Star Wars
 * Classical Cepheid variable
 * Classical compass winds
 * Classical diffusion
 * Classical element
 * Classical elements in popular culture
 * Classical planet
 * Classification of electromagnetic fields
 * Classification of non-silicate minerals
 * Classification of silicate minerals
 * Classification of sleep disorders
 * Clastic wedge
 * Clathrate hydrate
 * Claude Jaupart
 * Claude Lorius
 * Claude Nicollier
 * Claude R. Canizares
 * Claudia (crater)
 * Claudia Alexander
 * Claudia Cazacu
 * Claudia Letizia
 * Claudia Maraston
 * Claudia de Rham
 * Claudie Haigneré
 * Claudine Rinner
 * Claudio Casacci
 * Claudio Maccone
 * Claudio Stampi
 * Clausius (crater)
 * Clavibacter michiganensis
 * Clavius (crater)
 * Clavius Base
 * Clawful
 * Claxton meteorite
 * Clay
 * Clay (short story)
 * Clay cutan
 * Clay mineral
 * Clay-with-Flints
 * Claymation Comedy of Horrors
 * Claypan
 * Clayton Anderson
 * Clayton Lake State Park
 * Clean Air Society of Australia and New Zealand
 * CleanSeaNet
 * Cleaning event
 * Clear Sky Chart
 * ClearSpace-1
 * Clearcut (film)
 * Clearing the neighbourhood
 * Clearwater Lakes
 * Clebsch representation
 * Cleinias of Tarentum
 * Clementine (spacecraft)
 * Cleo Loi
 * Cleomedes (crater)
 * Cleon Lacefield
 * Cleopatra (crater)
 * Cleopatra Jones
 * Cleopatra Jones and the Casino of Gold
 * Cleostratus (crater)
 * Clerke (crater)
 * Clerkenwell cinema fire
 * Cleveland Abbe
 * Cleveland Museum of Natural History
 * Cleveland Night Express
 * Click (2006 film)
 * Clickworkers
 * Cliff
 * Cliff-former
 * Cliff-top dune
 * Cliffed coast
 * Clifford Cunningham
 * Clifford E. Charlesworth
 * Clifford Martin Will
 * Clifford Stoll
 * Clifford W. Holmes Award
 * Clifton Williams
 * Clifton–Pohl torus
 * Climacteric year
 * Climate
 * Climate Change Performance Index
 * Climate Change TV
 * Climate Dynamics
 * Climate Emergency in the United Kingdom
 * Climate Forecast Applications Network
 * Climate Policy (journal)
 * Climate Research (journal)
 * Climate Solutions Road Tour
 * Climate and Development
 * Climate change mitigation
 * Climate engineering
 * Climate ethics
 * Climate gap
 * Climate inertia
 * Climate justice
 * Climate model
 * Climate of Pluto
 * Climate of Titan
 * Climate of Uranus
 * Climate of ancient Rome
 * Climate of the Arctic
 * Climate of the Past
 * Climate restoration
 * Climate system
 * Climate variability and change
 * Climate-Alliance Germany
 * Climateprediction.net
 * Climatic Change (journal)
 * Climatic Research Unit
 * Climatic geomorphology
 * Climatology
 * Climax community
 * Climax species
 * Clime
 * Cline (hydrology)
 * Clinical sleep educator
 * Clinophilia
 * Clinton A. J. Duffy
 * Clinton B. Ford
 * Clinton-Sherman Industrial Airpark
 * Clip (film)
 * Clipper Schooner
 * Clive Phillipps-Wolley
 * Clive Ruggles
 * Cloak of Deception
 * Clocental
 * Clock drift
 * Clockwork universe
 * Clohessy–Wiltshire equations
 * Clomethiazole
 * Clone Wars (Star Wars)
 * Clone Wars Adventures
 * Clonycavan Man
 * Clorazepate
 * Close encounter
 * Close to Critical
 * Close-out (aerospace)
 * Closed ecological system
 * Closed timelike curve
 * Clostridium algoriphilum
 * Closure (atmospheric science)
 * Closure phase
 * Cloud Aerosol Transport System
 * Cloud albedo
 * Cloud drop effective radius
 * Cloud fraction
 * Cloud's Rider
 * Cloud-forest screech owl
 * CloudSat
 * Cloudcroft Observatory
 * Clouds Across the Moon
 * Clouds and the Earth's Radiant Energy System
 * Clover (detector)
 * Clover (telescope)
 * Cloverleaf quasar
 * Clowes–Campusano LQG
 * Club Cumming
 * Club Drive
 * Club Filter Melbourne
 * Club Foot (song)
 * Club Glow
 * Club Kids
 * Club RaYé
 * Club Saint-Germain
 * Club Space
 * Club Wild
 * Club Zanzibar
 * Club drug
 * Club of Rome
 * Clubbing (subculture)
 * Clubs Are Trump
 * Clumping factor
 * Cluster (spacecraft)
 * Cluster II (spacecraft)
 * Cluster Lensing and Supernova survey with Hubble
 * Cluster One
 * Clutter (radar)
 * Clutter folding
 * Clyde Foster
 * Clyde Tombaugh
 * Clärenore Stinnes
 * Clémentine (satellite)
 * Co-location (satellite)
 * Co-orbital configuration
 * Co-sleeping
 * CoDominium
 * CoGeNT
 * CoKu Tau/4
 * CoRoT
 * CoRoT-1
 * CoRoT-10b
 * CoRoT-11b
 * CoRoT-12b
 * CoRoT-13b
 * CoRoT-14b
 * CoRoT-15b
 * CoRoT-16b
 * CoRoT-17b
 * CoRoT-18b
 * CoRoT-19b
 * CoRoT-1b
 * CoRoT-2
 * CoRoT-20b
 * CoRoT-20c
 * CoRoT-21b
 * CoRoT-22b
 * CoRoT-23b
 * CoRoT-2b
 * CoRoT-3
 * CoRoT-3b
 * CoRoT-4
 * CoRoT-4b
 * CoRoT-5
 * CoRoT-5b
 * CoRoT-6
 * CoRoT-6b
 * CoRoT-7
 * CoRoT-7b
 * CoRoT-7c
 * CoRoT-7d
 * CoRoT-8b
 * CoRoT-9b
 * Coachmakers Arms, Hammersmith
 * Coahuila meteorite
 * Coal Hole, Strand
 * Coal slurry
 * Coalition for Deep Space Exploration
 * Coalsack Nebula
 * Coast
 * Coast Starlight
 * Coastal Batholith of Peru
 * Coastal Batholith of central Chile
 * Coastal Cliff of northern Chile
 * Coastal development hazards
 * Coastal erosion
 * Coastal flooding
 * Coastal geography
 * Coastal management
 * Coastal meadow
 * Coastal morphodynamics
 * Coastal reservoir
 * Coastal sediment supply
 * Coastal sediment transport
 * Coastal zone color scanner
 * Coastline (sculpture)
 * Coastline paradox
 * Coat of arms and flag of Transylvania
 * Coat of arms of Aarhus
 * Coat of arms of Adygea
 * Coat of arms of Alba Iulia
 * Coat of arms of Algiers
 * Coat of arms of Antigua and Barbuda
 * Coat of arms of Argentina
 * Coat of arms of Australia
 * Coat of arms of Bolivia
 * Coat of arms of Bonaire
 * Coat of arms of Bosnia and Herzegovina
 * Coat of arms of Brazil
 * Coat of arms of Brisbane
 * Coat of arms of British Columbia
 * Coat of arms of Buenos Aires Province
 * Coat of arms of Calgary
 * Coat of arms of Cameroon
 * Coat of arms of Chad
 * Coat of arms of Chile
 * Coat of arms of Copenhagen
 * Coat of arms of Costa Rica
 * Coat of arms of Crimea
 * Coat of arms of Croatia
 * Coat of arms of Cuba
 * Coat of arms of Dagestan
 * Coat of arms of Darwin
 * Coat of arms of Deva, Romania
 * Coat of arms of East Timor
 * Coat of arms of Ecuador
 * Coat of arms of Edmonton
 * Coat of arms of Focșani
 * Coat of arms of French Polynesia
 * Coat of arms of Ghana
 * Coat of arms of Guadeloupe
 * Coat of arms of Haarlem
 * Coat of arms of Hamburg
 * Coat of arms of Hobart
 * Coat of arms of Ingushetia
 * Coat of arms of Ivory Coast
 * Coat of arms of Kiribati
 * Coat of arms of Klaipėda
 * Coat of arms of La Guajira Department
 * Coat of arms of Lancaster University
 * Coat of arms of Latvia
 * Coat of arms of Leeds
 * Coat of arms of Liberia
 * Coat of arms of Libya
 * Coat of arms of Maastricht
 * Coat of arms of Madrid
 * Coat of arms of Magdalena Department
 * Coat of arms of Malacca
 * Coat of arms of Malawi
 * Coat of arms of Mali
 * Coat of arms of Mauritius
 * Coat of arms of Moldova
 * Coat of arms of Morocco
 * Coat of arms of Namibia
 * Coat of arms of Nauru
 * Coat of arms of Netherlands New Guinea
 * Coat of arms of New South Wales
 * Coat of arms of New York
 * Coat of arms of New Zealand
 * Coat of arms of Niger
 * Coat of arms of Norfolk Island
 * Coat of arms of North Dakota
 * Coat of arms of Northern Ireland
 * Coat of arms of Nunavut
 * Coat of arms of Panama
 * Coat of arms of Paraguay
 * Coat of arms of Perm
 * Coat of arms of Poltava Oblast
 * Coat of arms of Pope Francis
 * Coat of arms of Poznań
 * Coat of arms of Risør
 * Coat of arms of Romania
 * Coat of arms of Samoa
 * Coat of arms of Sarawak
 * Coat of arms of Senegal
 * Coat of arms of Sevastopol
 * Coat of arms of Singapore
 * Coat of arms of Sint Maarten
 * Coat of arms of Slovenia
 * Coat of arms of Solomon Islands
 * Coat of arms of Somalia
 * Coat of arms of South Georgia and the South Sandwich Islands
 * Coat of arms of Stellaland
 * Coat of arms of Suriname
 * Coat of arms of Sweden
 * Coat of arms of Sydney
 * Coat of arms of São Tomé and Príncipe
 * Coat of arms of Texas
 * Coat of arms of Thuringia
 * Coat of arms of Timișoara
 * Coat of arms of Tonga
 * Coat of arms of Transnistria
 * Coat of arms of Tunisia
 * Coat of arms of Uganda
 * Coat of arms of Ulcinj
 * Coat of arms of Uruguay
 * Coat of arms of Vardø
 * Coat of arms of Victoria (Australia)
 * Coat of arms of West Yorkshire
 * Coat of arms of Western Sahara
 * Coat of arms of Winnipeg
 * Coat of arms of Zagreb
 * Coat of arms of Zimbabwe
 * Coat of arms of the Azores
 * Coat of arms of the BBC
 * Coat of arms of the Bahamas
 * Coat of arms of the British Indian Ocean Territory
 * Coat of arms of the Cayman Islands
 * Coat of arms of the Central African Republic
 * Coat of arms of the Collectivity of Saint Martin
 * Coat of arms of the Community of Madrid
 * Coat of arms of the Cook Islands
 * Coat of arms of the Drapers Company
 * Coat of arms of the Federation of Bosnia and Herzegovina
 * Coat of arms of the Federation of Rhodesia and Nyasaland
 * Coat of arms of the Kurdistan Region
 * Coat of arms of the London Borough of Haringey
 * Coat of arms of the London Borough of Hillingdon
 * Coat of arms of the Netherlands Antilles
 * Coat of arms of the Ottoman Empire
 * Coat of arms of the Philippines
 * Coat of arms of the Republic of Bashkortostan
 * Coat of arms of the Republic of Karelia
 * Coat of arms of the Royal Borough of Greenwich
 * Coat of arms of the Székelys
 * Coat of arms of the Tuva Republic
 * Coat of arms of the Washington family
 * Coatlicue (star)
 * Coats Observatory
 * Cobb–Eickelberg Seamount chain
 * Coblentz (Martian crater)
 * Coblentz (lunar crater)
 * Coblentz Society
 * Cobra (manga)
 * Coburn (band)
 * Cochise (crater)
 * Cocidius
 * Cockcroft (crater)
 * Cockcroft Institute
 * Cockercombe tuff
 * Cocoon (club)
 * Cocoricò (nightclub)
 * Code of the Lifemaker
 * Coded aperture
 * Codex Borbonicus
 * Codex Borgia
 * Codex Fejérváry-Mayer
 * Codex Mexicanus
 * Codex Ríos
 * Codex Telleriano-Remensis
 * Codex: Imperial Guard
 * Coesite
 * Coeurl
 * Coffee River Cave
 * Coffin Joe
 * Coffy
 * Cognitive behavioral therapy for insomnia
 * Cognitive geography
 * Cognitive neuroscience of dreams
 * Cognized environment
 * Cohenite
 * Coherence (film)
 * Coherence scanning interferometry
 * Coherence theory (optics)
 * Coherent Raman scattering microscopy
 * Coherent anti-Stokes Raman spectroscopy
 * Coherent diffraction imaging
 * Coherent electromagnetic radio tomography
 * Coherent spectroscopy
 * Cohocksink Creek
 * Cohoquinoque Creek
 * Coihaique Group
 * Coilgun
 * Cointe Observatory
 * Col
 * Colaba Observatory
 * Colangüil Batholith
 * Colatitude
 * Colcannon
 * Cold Atom Laboratory
 * Cold Big Bang
 * Cold Blank
 * Cold Front (Star Trek: Enterprise)
 * Cold Fusion (novel)
 * Cold Hands, Warm Heart
 * Cold Warriors
 * Cold as Ice (novel)
 * Cold camera photography
 * Cold cathode
 * Cold dark matter
 * Cold gas thruster
 * Cold quasar
 * Cold seep
 * Cold trap
 * Cold trap (astronomy)
 * Cold vapour atomic fluorescence spectroscopy
 * Cold-water geyser
 * Colectiv nightclub fire
 * Coleman–Mandula theorem
 * Coleridge (crater)
 * Coleta de Dados Colles
 * Colette Heald
 * Colicin
 * Coliform index
 * Colima pygmy owl
 * Colin Curtis (DJ)
 * Colin Faver
 * Colin Franklin (engineer)
 * Colin Hayter Crick
 * Colin Morgan
 * Colin Pillinger
 * Colin Pittendrigh
 * Colin Ronan
 * Colin Stanley Gum
 * Colin Thubron
 * Colin Trevorrow
 * Colin Wilson
 * Coliseum Theatre (Washington Heights)
 * Collaborative Computational Project Q
 * Collage (geology)
 * Collapsar
 * CollectSPACE
 * Colleen Cavanaugh
 * Colleen Farrington
 * Colleen Hartman
 * College circuit
 * Collider (film)
 * Colliding beam fusion
 * Colliding-wind binary
 * Collimated beam
 * Collin Roesler
 * Collinder 135
 * Collinder 140
 * Collinder catalogue
 * Collins (crater)
 * Collins Observatory
 * Collis (planetary nomenclature)
 * Collision Earth
 * Collision avoidance (spacecraft)
 * Collision-induced absorption and emission
 * Collisional excitation
 * Collisional family
 * Collocation (remote sensing)
 * Colloid thruster
 * Collurania-Teramo Observatory
 * Colluvium
 * Colocalization Benchmark Source
 * Coloe Fossae
 * Colombian Geological Survey
 * Colombian Space Commission
 * Colombo (crater)
 * Colombo University Observatory
 * Colonial (PRR train)
 * Colonial American Astronomy
 * Colonial Time Service Observatory
 * Colonist (The X-Files)
 * Colonization (series)
 * Colonization of Europa
 * Colonization of Mars
 * Colonization of Titan
 * Colonization of Venus
 * Colonization of the Moon
 * Colonization of the asteroids
 * Colonization of the inner Solar System
 * Colonization of the outer Solar System
 * Colonization of trans-Neptunian objects
 * Colonization resistance
 * Colonization: Aftershocks
 * Colonization: Down to Earth
 * Colonization: Second Contact
 * Colony (Grant novel)
 * Colony (TV series)
 * Colony (short story)
 * Colony Wars
 * Colony Wars: Red Sun
 * Colony Wars: Vengeance
 * Colony in Space
 * Color Me Blood Red
 * Color confinement
 * Color in Chinese culture
 * Color index
 * Color index (geology)
 * Color of water
 * Color superconductivity
 * Colorado Center for Astrodynamics Research
 * Colorado Student Space Weather Experiment
 * Colored dissolved organic matter
 * Colored-particle-in-cell
 * Colorimeter (chemistry)
 * Colors of the day in Thailand
 * Color–color diagram
 * Color–flavor locking
 * Colossus and the Crab
 * Colossus of Nero
 * Colossus of Rhodes
 * Columba (constellation)
 * Columba association
 * Columba in Chinese astronomy
 * Columbia Accident Investigation Board
 * Columbia Hills (Mars)
 * Columbia Mountains
 * Columbia Non-neutral Torus
 * Columbia Plateau
 * Columbia: The Tragic Loss
 * Columbian (MILW train)
 * Columbus (ISS module)
 * Columbus (crater)
 * Columbus Control Centre
 * Columbus Man-Tended Free Flyer
 * Columbus – External Payload Facility
 * Columnar jointing
 * Colure
 * Colwellia
 * Colônia crater
 * Coma (cometary)
 * Coma Berenices
 * Coma Berenices (dwarf galaxy)
 * Coma Berenices in Chinese astronomy
 * Coma Berenicids
 * Coma Cluster
 * Coma Filament
 * Coma I
 * Coma Star Cluster
 * Coma Supercluster
 * Coma cocktail
 * Comas Sola (crater)
 * Combat Mecha Xabungle
 * Combat Rock (novel)
 * Combat Shock
 * Combinatorial mirror symmetry
 * Combine (Half-Life)
 * Combined Array for Research in Millimeter-wave Astronomy
 * Combined sewer
 * Combustion Integrated Rack
 * Combustion tap-off cycle
 * Come Back to Me (Ayreon song)
 * Come Sail Away
 * Comendite
 * Comet
 * Comet (book)
 * Comet (experiment)
 * Comet (film)
 * Comet (pyrotechnics)
 * Comet Arend–Roland
 * Comet Bennett
 * Comet Borrelly
 * Comet Chasers
 * Comet Crash
 * Comet Donati
 * Comet Encke
 * Comet Galaxy
 * Comet HLLV
 * Comet Hale–Bopp
 * Comet Holmes
 * Comet Hopper
 * Comet Howard–Koomen–Michels
 * Comet Humason
 * Comet Hyakutake
 * Comet IRAS–Araki–Alcock
 * Comet ISON
 * Comet Ikeya–Seki
 * Comet Interceptor
 * Comet Kohoutek
 * Comet Lulin
 * Comet Machholz
 * Comet Man
 * Comet McNaught–Russell
 * Comet Morehouse
 * Comet NEOWISE
 * Comet Nucleus Dust and Organics Return
 * Comet Pereyra
 * Comet Pojmański
 * Comet Rendezvous Asteroid Flyby
 * Comet Rendezvous, Sample Acquisition, Investigation, and Return
 * Comet Shoemaker–Levy 9
 * Comet Skjellerup–Maristany
 * Comet Skorichenko–George
 * Comet Stonehouse
 * Comet Swift–Tuttle
 * Comet West
 * Comet White–Ortiz–Bolelli
 * Comet Yi–SWAN
 * Comet Zhu–Balam
 * Comet de Vico
 * Comet dust
 * Comet in Moominland
 * Comet in Moominland (film)
 * Comet nucleus
 * Comet of 1472
 * Comet of 1729
 * Comet seeker
 * Comet tail
 * Cometary knot
 * Comets in fiction
 * Comfortably Numb
 * Comical History of the States and Empires of the Moon
 * Comin' Home (Hum song)
 * Coming Back to Life
 * Comisión Nacional de Actividades Espaciales
 * Comley limestone
 * Command & Conquer: Yuri's Revenge
 * Command missile
 * Command module Columbia
 * Commander Keen in Goodbye, Galaxy
 * Commander Keen in Invasion of the Vorticons
 * Commander Keen in Keen Dreams
 * Commander Shepard
 * Commander USA's Groovie Movies
 * Commemorations of Benjamin Banneker
 * Commensurability (astronomy)
 * Commentariolus
 * Commercial Crew Program
 * Commercial Lunar Mission Support Services
 * Commercial Lunar Payload Services
 * Commercial Orbital Transportation Services
 * Commercial Resupply Services
 * Commercial Space Launch Act of 1984
 * Commercial Space Launch Competitiveness Act of 2015
 * Commercial Spaceflight Federation
 * Commercial Standard Digital Bus
 * Commercial Tavern
 * Commercial astronaut
 * Commercial use of space
 * Commission for Dark Skies
 * Commission for the Management and Application of Geoscience Information
 * Commission on Maps and the Internet
 * Committee on Earth Observation Satellites
 * Committee on Space Research
 * Common Berthing Mechanism
 * Common Core Booster
 * Common Law Cabin
 * Common Law Wife (film)
 * Common Missile
 * Common Time
 * Common envelope
 * Common heritage of mankind
 * Common modeling infrastructure
 * Common squirrel monkey
 * Common surface features of Mars
 * Common traffic advisory frequency
 * Common year starting on Friday
 * Common year starting on Monday
 * Common year starting on Saturday
 * Common year starting on Sunday
 * Common year starting on Thursday
 * Common year starting on Tuesday
 * Common year starting on Wednesday
 * Common-path interferometer
 * Commonwealth Bay
 * Commonwealth Saga
 * Commonwealth Star
 * Communicating vessels
 * Communication with extraterrestrial intelligence
 * Communication-Centric Intelligence Satellite
 * Communications Satellite Act of 1962
 * Communications Technology Satellite
 * Communications of the Lunar and Planetary Laboratory
 * Communications satellite
 * Communicative planning
 * Communion (book)
 * Community (ecology)
 * Community Climate System Model
 * Community Cyberinfrastructure for Advanced Microbial Ecology Research and Analysis
 * Community Earth System Model
 * Community Radiative Transfer Model
 * Community Surface Dynamics Modeling System
 * Community fingerprinting
 * Community studies
 * Commuter Husbands
 * Comoving and proper distances
 * Comoé National Park Research Station
 * CompTox Chemicals Dashboard
 * Compact Reconnaissance Imaging Spectrometer for Mars
 * Compact Toroidal Hybrid
 * Compact dimension
 * Compact fluorescent lamp
 * Compact intracloud discharge
 * Compact star
 * Compact toroid
 * Compactification (physics)
 * Compaction (geology)
 * Compaction simulation
 * Comparative Toxicogenomics Database
 * Comparative Tracking Index
 * Comparative planetary science
 * Comparison of Asian national space programs
 * Comparison of ICBMs
 * Comparison of Star Trek and Star Wars
 * Comparison of communication satellite operators
 * Comparison of crewed space vehicles
 * Comparison of embedded computer systems on board the Mars rovers
 * Comparison of free off-line satellite navigation software
 * Comparison of orbital launch systems
 * Comparison of orbital launcher families
 * Comparison of orbital rocket engines
 * Comparison of photogrammetry software
 * Comparison of remote sensing satellites
 * Comparison of satellite buses
 * Comparison of satellite navigation software
 * Comparison of solid-fuelled orbital launch systems
 * Comparison of space station cargo vehicles
 * Compass (NASA)
 * Compass rose
 * Compass-1
 * Compass-G1
 * Compass-IGSO1
 * Compassionate conservation
 * Compatibility (geochemistry)
 * Competition between Airbus and Boeing
 * Complex (geology)
 * Complex crater
 * Complex response
 * Complexometric indicator
 * Composante Spatiale Optique
 * Composite Binary Offset Carrier
 * Composite chart
 * Composite gravity
 * Composition of Mars
 * Compost
 * Compressed air dryer
 * Compressed fluid
 * Compressed hydrogen
 * Compression (geology)
 * Compton (crater)
 * Compton Gamma Ray Observatory
 * Compton edge
 * Compton scattering
 * Compton telescope
 * Compton–Belkovich Thorium Anomaly
 * Compton–Getting effect
 * Computation of radiowave attenuation in the atmosphere
 * Computational Infrastructure for Geodynamics
 * Computational astrophysics
 * Computed tomography imaging spectrometer
 * Computer Space
 * Comrie (crater)
 * Comstock (crater)
 * Conaco
 * Conamara Chaos
 * Conan (dog)
 * Conan (talk show)
 * Conan O'Brien
 * Conan O'Brien Can't Stop
 * Conan O'Brien Needs a Friend
 * Conan blimp
 * Concentric crater fill
 * Concentric spheres
 * Concert Mayol
 * Concession stand
 * Concordant coastline
 * Concordia Station
 * Concurrent (Easter)
 * Concurrent Design Facility
 * CondoSat
 * Condon (crater)
 * Condor (Argentine missile)
 * Condorcet (crater)
 * Cone (crater)
 * Cone Nebula
 * Cone of depression
 * ConeXpress
 * Coneybury Henge
 * Confederation of Indian Amateur Astronomers
 * Conference of Latin Americanist Geographers
 * Confessio Amantis
 * Confidence and Paranoia
 * Confined space
 * Confluence
 * Conformal Killing vector field
 * Conformal anomaly
 * Conformal antenna
 * Conformal cyclic cosmology
 * Conformal gravity
 * Conformal map projection
 * Conformal supergravity
 * Conformastatic spacetimes
 * Confusional arousals
 * Congo red
 * Congreve (crater)
 * Congruence (general relativity)
 * Conical hill
 * Conifold
 * Coniology
 * Coniraya (crater)
 * Conjunction (astronomy)
 * Connaissance des Temps
 * Connecticut Yankee (train)
 * Connecting Slough
 * Connolly Basin crater
 * Connor Palace
 * Conny Aerts
 * Conny van Rietschoten
 * Conon (crater)
 * Conquering Worlds
 * Conquest of Space
 * Conrad Dasypodius
 * Conrad Haas
 * Conrad discontinuity
 * Conroy Virtus
 * Consell Observatory
 * Conservation and restoration of insect specimens
 * Conservation movement
 * Conservation psychology
 * Conservatory Water
 * Consider Phlebas
 * Constance Adams
 * Constant routine protocol
 * Constantijn Huygens Jr.
 * Constantin Le Paige
 * Constantinople Observatory of Taqi ad-Din
 * Constellation
 * Constellation Observing System for Meteorology, Ionosphere, and Climate
 * Constellation family
 * Constellation program
 * Constellation-X Observatory
 * Constructed wetland
 * Construction of a complex null tetrad
 * Consultative Committee for Space Data Systems
 * Consumer fireworks
 * Contact (1997 American film)
 * Contact (novel)
 * Contact (video game)
 * Contact Conference
 * Contact binary
 * Contact binary (small Solar System body)
 * Contact protection
 * Contactee
 * Contamination
 * Contamination (film)
 * Contents of the Voyager Golden Record
 * Context Is for Kings
 * Continent of stability
 * Continent-ocean boundary
 * Continental Biogeographic Region
 * Continental crust
 * Continental drift
 * Continental margin
 * Continental rise
 * Continental shelf
 * Continuous positive airway pressure
 * Contour advection
 * Contour line
 * Contour plowing
 * Contour trenching
 * Contracted Bianchi identities
 * Contribution to ARIEL Spectroscopy of Exoplanets
 * Contributions to Mineralogy and Petrology
 * Control moment gyroscope
 * Controlled Experiment
 * Controlled atmosphere
 * Controlled ecological life-support system
 * Controlled source electro-magnetic
 * Controlled traffic farming
 * Controller–pilot data link communications
 * Controversy over the discovery of Haumea
 * Convair C-131 Samaritan
 * Convection
 * Convection zone
 * Convective overshoot
 * Convective overturn
 * Convention Relating to the Distribution of Programme-Carrying Signals Transmitted by Satellite
 * Convention on Transit Trade of Land-locked States
 * Conventional International Origin
 * Conventional pollutant
 * Convergence zone
 * Conversion electron Mössbauer spectroscopy
 * Conversion of Paul the Apostle
 * Conviction (Star Wars novel)
 * Cook (crater)
 * Cool Breeze (film)
 * Cool and the Crazy
 * Cool tropics paradox
 * Cooley High
 * Coolidge Corner Theatre
 * Cooling flow
 * Cooling pond
 * Cooma Mail
 * Coonskin (film)
 * Cooper (crater)
 * Cooperative Institute for Climate Science
 * Cooperative Institute for Meteorological Satellite Studies
 * Cooperative Institute for Research in Environmental Sciences
 * Cooperia (plant)
 * Coordinate time
 * Coordinated Universal Time
 * Copaline
 * Cope's gray treefrog
 * Copeland Septet
 * Copenhagen Suborbitals
 * Copernican Revolution
 * Copernican heliocentrism
 * Copernican period
 * Copernican principle
 * Copernicium
 * Copernicus (Martian crater)
 * Copernicus (lunar crater)
 * Copernicus Atmosphere Monitoring Service
 * Copernicus Climate Change Service
 * Copernicus Foundation for Polish Astronomy
 * Copernicus Programme
 * Copernicus Science Centre
 * Cophasing
 * Copland (crater)
 * Copland Pass
 * Copley (crater)
 * Copper Breaks State Park
 * Copper in heat exchangers
 * Copperhead (Image Comics)
 * Coppélia
 * Coprates Chasma
 * Coprates quadrangle
 * Coprothermobacter platensis
 * Coprothermobacter proteolyticus
 * Coptic calendar
 * Copyscope
 * Coqui (NASA)
 * Cor Caroli
 * Cora G. Burwell
 * Coral Reef Conservation Program
 * Coral reef
 * Corby (crater)
 * Cordelia (moon)
 * Cordell–Lorenz Observatory
 * Cordillera Blanca Batholith
 * Core sample
 * Coreless planet
 * Coreshine
 * Core–mantle boundary
 * Core–mantle differentiation
 * Cori (lunar crater)
 * Coricancha
 * Corina Brussaard
 * Corinne Manogue
 * Coriolis (crater)
 * Coriolis (satellite)
 * Coriolis field
 * Coriolis frequency
 * Cormac Ó Ceallaigh
 * Corn Ranch
 * Corn on the Cop
 * Cornbread, Earl and Me
 * Cornelia C. Cameron
 * Cornelia Lüdecke
 * Cornelio Malvasia
 * Cornelis Dirk Andriesse
 * Cornelis Easton
 * Cornelis Johannes van Houten
 * Cornelis de Jager
 * Cornelis de Jode
 * Cornelius Gemma
 * Cornelius Lanczos
 * Cornell Mayer
 * Cornell University Satellite
 * Corona (planetary geology)
 * Corona (satellite)
 * Corona Australis
 * Corona Australis in Chinese astronomy
 * Corona Borealis
 * Corona Borealis Supercluster
 * Corona Borealis in Chinese astronomy
 * Corona Zombies
 * Corona discharge
 * Corona ring
 * Coronae Montes
 * Coronal cloud
 * Coronal hole
 * Coronal loop
 * Coronal mass ejection
 * Coronal radiative losses
 * Coronal rain
 * Coronal seismology
 * Coronet Cluster
 * Corossol crater
 * Corotation circle
 * Corporal Clegg
 * Corps of Topographs (Russian Empire)
 * Corpse uncleanness
 * Corpulent Stump
 * Corpuscular theory of light
 * Corrado Lamberti
 * Corralitos Observatory
 * Corrective Optics Space Telescope Axial Replacement
 * Correlation function (astronomy)
 * Corrosion in space
 * Corsair (comics)
 * Cort Aslakssøn
 * Cortisol awakening response
 * Coruscant Nights
 * Corvalol
 * Corvus (constellation)
 * Corvus in Chinese astronomy
 * Cory Doctorow
 * Cos-B
 * Cosener's House
 * Cosimo Bambi
 * Cosmic Anisotropy Polarization Mapper
 * Cosmic Anisotropy Telescope
 * Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
 * Cosmic Background Explorer
 * Cosmic Background Imager
 * Cosmic Birth
 * Cosmic Calendar
 * Cosmic Call
 * Cosmic Conflict
 * Cosmic Dancer
 * Cosmic Dawn Center
 * Cosmic Evolution (book)
 * Cosmic Evolution Survey
 * Cosmic Explorer (gravitational wave observatory)
 * Cosmic Girl (aircraft)
 * Cosmic Girl (song)
 * Cosmic Horseshoe
 * Cosmic Hunt
 * Cosmic Infrared Background ExpeRiment
 * Cosmic Jackpot
 * Cosmic Origins Spectrograph
 * Cosmic Patrol
 * Cosmic Radiation Satellite
 * Cosmic Ray Energetics and Mass Experiment
 * Cosmic Ray Subsystem
 * Cosmic Research
 * Cosmic Vision
 * Cosmic Voyage (1936 film)
 * Cosmic Wars
 * Cosmic Zoom
 * Cosmic age problem
 * Cosmic ancestry
 * Cosmic background radiation
 * Cosmic censorship hypothesis
 * Cosmic crystallography
 * Cosmic distance ladder
 * Cosmic dust
 * Cosmic infrared background
 * Cosmic latte
 * Cosmic microwave background
 * Cosmic neutrino background
 * Cosmic noise
 * Cosmic ocean
 * Cosmic pluralism
 * Cosmic ray
 * Cosmic ray spallation
 * Cosmic ray visual phenomena
 * Cosmic string
 * Cosmic time
 * Cosmic variance
 * Cosmic wind
 * Cosmic-Ray Extremely Distributed Observatory
 * Cosmic-ray observatory
 * CosmicOS
 * CosmoCaixa Barcelona
 * Cosmoball
 * Cosmobiology
 * Cosmochemistry
 * Cosmodome
 * Cosmogenic nuclide
 * Cosmogony
 * Cosmographia (Bernardus Silvestris)
 * Cosmographiae Introductio
 * Cosmography
 * Cosmolabe
 * Cosmological constant
 * Cosmological constant problem
 * Cosmological decade
 * Cosmological horizon
 * Cosmological interpretation of quantum mechanics
 * Cosmological lithium problem
 * Cosmological natural selection
 * Cosmological perturbation theory
 * Cosmological principle
 * Cosmology
 * Cosmology (book)
 * Cosmology Large Angular Scale Surveyor
 * Cosmonautica
 * Cosmonautics Day
 * Cosmonauts Alley
 * Cosmonova
 * Cosmopolis XXI
 * Cosmopolitan distribution
 * Cosmos
 * Cosmos (Sagan book)
 * Cosmos 1
 * Cosmos Redshift 7
 * Cosmos and Psyche
 * Cosmos: A Personal Voyage
 * Cosmos: A Spacetime Odyssey
 * Cosmos: Possible Worlds
 * Cosmos: War of the Planets
 * Cosmosphere
 * Costa Rican pygmy owl
 * Costume Contest
 * Costume Quest
 * Costume Quest 2
 * Cot side
 * Cotton Candy Nebula
 * Cotton Comes to Harlem
 * Cotton effect
 * Couch surfing
 * Couder (crater)
 * Coudé Auxiliary Telescope
 * Couloir
 * Coulomb (crater)
 * Coulomb collision
 * Council for the Central Laboratory of the Research Councils
 * Council of Laodicea
 * Count Alois von Beckh Widmanstätten
 * Count Floyd
 * Count Gore de Vol
 * Count Scary
 * Countdown
 * Countdown (1968 film)
 * Counter-Earth
 * Counter-Earth (comics)
 * Counter-mapping
 * Counterpoise (ground system)
 * Counterstrike (drum and bass group)
 * Counterweight
 * Counting sheep
 * Country Song (Pink Floyd song)
 * Coup of 18 Brumaire
 * Couperin (crater)
 * Coupled Model Intercomparison Project
 * Coupling, Energetics and Dynamics of Atmospheric Regions
 * Courage the Cowardly Dog
 * Courier 1B
 * Courier Forschungsinstitut Senckenberg
 * Course deviation indicator
 * Courtney (crater)
 * Couture crater
 * Covariant derivative
 * Cove
 * Covenant (Halo)
 * Cover Girl Models
 * Cover crop
 * Cowboy Bebop
 * Cowboy Bebop (1998 video game)
 * Cowboy Bebop: The Movie
 * Cowboy Bebop: Tsuioku no Serenade
 * Cowboy bedroll
 * Cowboys & Aliens
 * Cowon
 * Cox and Underwood
 * Coxcatlan Cave
 * Coyolxāuhqui
 * Crab (unit)
 * Crab Nebula
 * Crab Pulsar
 * Crab-eating macaque
 * Crackle breccia
 * Crackle tube
 * Cracovian
 * Cradle (bed)
 * Crag and tail
 * Craig Chester (astronomer)
 * Craig Edward DeForest
 * Craig Ferguson
 * Craig Hogan
 * Craig Kilborn
 * Craig Newmark
 * Craig Richards (DJ)
 * Craig telescope
 * Cranbourne meteorite
 * Cranbrook Educational Community
 * Cranbury Park
 * Crane Observatory
 * Cranmer Park
 * Crash – Cop's Daughter
 * Crater (constellation)
 * Crater 101
 * Crater 2 Dwarf
 * Crater Critters
 * Crater chain
 * Crater counting
 * Crater depth
 * Crater illusion
 * Crater in Chinese astronomy
 * Crater of eternal darkness
 * Cratonic sequence
 * Crawford Observatory
 * Crawford crater
 * Crawfordsville monster
 * Crawler-transporter
 * Crawlerway
 * Crayford Manor House Astronomical Society
 * Crayford focuser
 * Crazy Horse (cabaret)
 * Crazy Party Night (Pumpkin no Gyakushū)
 * Crazy Planets
 * Crazy Thunder Road
 * Cream (nightclub)
 * Creatio ex nihilo
 * Creation Club
 * Creation Engine
 * Creation myth
 * Creation of NASA
 * Creation of life from clay
 * Creationism
 * Creative Energy Homes
 * Creator deity
 * Creature (1985 film)
 * Creature Double Feature
 * Creature Feature (1973 TV series)
 * Creature Features
 * Creature Features (1969 TV series)
 * Creature Shock
 * Creek mythology
 * Creighton University Observatory
 * Crematia Mortem
 * Cremona (crater)
 * Crenarchaeota
 * Crepuscular animal
 * Crescent
 * Crescent (train)
 * Crescent Nebula
 * Cresol Red
 * Cressida (moon)
 * Crest (hydrology)
 * Crest of the Stars
 * Crested owl
 * Cretaceous–Paleogene boundary
 * Cretaceous–Paleogene extinction event
 * Crevasse
 * Crew Dragon C201
 * Crew Dragon Demo-1
 * Crew Dragon Demo-2
 * Crew Dragon Endeavour
 * Crew Dragon In-Flight Abort Test
 * Crew Dragon Pad Abort Test
 * Crew Dragon Resilience
 * Crew Exploration Vehicle
 * Crew Medical Support Office
 * Crew Module Atmospheric Re-entry Experiment
 * Crew Return Vehicle
 * Crew equipment interface test
 * Crewe (crater)
 * Crewed Mars rover
 * Cribbage
 * Crider (soil)
 * Criegee intermediate
 * Crile (crater)
 * Crimean Astrophysical Observatory
 * Crimes of the Hot
 * Criminally Insane (film)
 * Criminally Insane 2
 * Criminals Gone Wild
 * Crimson Dragon
 * Crimson Dynamo
 * Crimson Sea
 * Crisco Disco
 * Crisis on Infinite Earths
 * Crisis on Infinite Earths (Arrowverse)
 * Crispin Freeman
 * Cristiana Dumitrache
 * Cristina Takacs-Vesbach
 * Critical cartography
 * Critical dimension
 * Critical ionization velocity
 * Critical point (thermodynamics)
 * Critical system
 * Critical-list minor planet
 * Criticism of the Space Shuttle program
 * Critters: A New Binge
 * Crivitz (crater)
 * Crocco (crater)
 * Crom Cruach
 * Cromer Shoal Chalk Beds
 * Crommelin (Martian crater)
 * Crommelin (lunar crater)
 * Cronius the Pythagorean
 * Cronus
 * Crooked Billet, Wimbledon
 * Crookers
 * Crookes (crater)
 * Crookes radiometer
 * Crookes tube
 * Crop Science Society of America
 * Crop coefficient
 * Crop rotation
 * Crop tolerance to seawater
 * Cross Bearer
 * Cross Keys, Covent Garden
 * Cross Keys, Dagenham
 * Cross sea
 * Cross section (physics)
 * Cross-boundary subsidy
 * Cross-plot
 * Cross-resistance
 * Crossatron
 * Crossed Dragone
 * Crossing the Red Sea
 * Crossley telescope
 * Crossover (Star Trek: Deep Space Nine)
 * Crossworlds
 * Crotylbarbital
 * Crowdfunded satellites
 * Crowdmapping
 * Crown & Thistle, Gravesend
 * Crown Hill Formation
 * Crown Wetlands
 * Crown and Anchor, Euston
 * Crown and Thistle Inn, Monmouth
 * Crown flash
 * Crozier (crater)
 * Crucible (Star Wars novel)
 * Cruel Intentions
 * Cruel Passion
 * Cruinlagh
 * Cruis'n Exotica
 * Cruise ship pollution in Europe
 * Cruise ship poolside theater
 * Cruls (crater)
 * Crumbling Land
 * Crusade (TV series)
 * Crusade (short story)
 * Crust (geology)
 * Crux
 * Crux in Chinese astronomy
 * Crying Suns
 * CryoEDM
 * CryoSat
 * CryoSat-1
 * CryoSat-2
 * Cryobacterium psychrophilum
 * Cryochemistry
 * Cryoconite
 * Cryogenian
 * Cryogenic Dark Matter Search
 * Cryogenic Low-Energy Astrophysics with Neon
 * Cryogenic Rare Event Search with Superconducting Thermometers
 * Cryoplanation
 * Cryopump
 * Cryoseism
 * Cryosphere
 * Cryosuction
 * Cryoturbation
 * Cryovolcano
 * Cryptic (geology)
 * Cryptoexplosion
 * Crypton (particle)
 * Cryptospore
 * Crysis (video game)
 * Crysis 3
 * Crystal (comics)
 * Crystal Singer
 * Crystal violet
 * Crüger (crater)
 * Ctesibius (crater)
 * Cthulhu
 * Cthulhu Macula
 * CubETH
 * Cuba meteorite
 * Cuban pygmy owl
 * CubeRover
 * CubeSail
 * CubeSail (UltraSail)
 * CubeSat
 * CubeSat UV Experiment
 * CubeSat for Solar Particles
 * Cubesat Space Protocol
 * Cuckold Formation
 * Cuckoo Stone
 * Cuckoo's Egg (book)
 * Cuesta
 * Culemborg fireworks disaster
 * Culham Centre for Fusion Energy
 * Culham Inlet
 * Culmination
 * Cultural Geographies
 * Cultural astronomy
 * Cultural depictions of Stonehenge
 * Cultural eutrophication
 * Cultural tracking
 * Culture series
 * Cumbrian Coast Group
 * Cumulene
 * Cunitz (crater)
 * Cunningham (crater)
 * Cuno Hoffmeister
 * Cupid (moon)
 * Cupola (ISS module)
 * Cupola (geology)
 * Cupriavidus metallidurans
 * Cured (Red Dwarf)
 * Curia Calabra
 * Curie (Martian crater)
 * Curie (lunar crater)
 * Curiosity (rover)
 * Curious George Gets a Medal
 * Current (stream)
 * Current sheet
 * Current solar income
 * Currentology
 * Curse (video game)
 * Cursus Barrows
 * Curt Michel
 * Curtis (crater)
 * Curtis Brown
 * Curtis Peebles
 * Curtis Santiago
 * Curtius (crater)
 * Curtobacterium
 * Curtobacterium flaccumfaciens
 * Curtright field
 * Curvaton
 * Curvature collineation
 * Curve of growth
 * Curved space
 * Cusanus (crater)
 * Cusp (astrology)
 * Cuspate foreland
 * Cuspy halo problem
 * Custer Observatory
 * Custos Messium
 * Cut La Roc
 * Cut bank
 * Cutans
 * Cutt Off
 * Cutty Sark (pub)
 * Cuvier (crater)
 * Cwm Llwyd Fault
 * Cwm Pennant Fault
 * Cyane Fossae
 * Cyanide
 * Cyanide fishing
 * Cyanidin
 * Cyanobacteria
 * Cyanometer
 * Cyberdemon
 * Cyberman
 * Cybermorph
 * Cycle Psycho
 * Cycler
 * Cycles of Time
 * Cyclic alternating pattern
 * Cyclic model
 * Cyclobacterium halophilum
 * Cyclobacterium qasimii
 * Cyclobacterium xiamenense
 * Cyclobarbital
 * Cyclone (Marvel Comics)
 * Cyclone Global Navigation Satellite System
 * Cyclonic Niño
 * Cyclopean stairs
 * Cyclopentobarbital
 * Cyclopropane
 * Cyclopropene
 * Cyclopropyl cyanide
 * Cyclops laser
 * Cyclostratigraphy
 * Cyclotron radiation
 * Cyfoesi Myrddin a Gwenddydd ei Chwaer
 * Cygnus (constellation)
 * Cygnus (spacecraft)
 * Cygnus A
 * Cygnus CRS OA-4
 * Cygnus CRS OA-5
 * Cygnus CRS OA-6
 * Cygnus CRS OA-7
 * Cygnus CRS OA-8E
 * Cygnus CRS OA-9E
 * Cygnus CRS Orb-1
 * Cygnus CRS Orb-2
 * Cygnus CRS Orb-3
 * Cygnus Loop
 * Cygnus NG-10
 * Cygnus NG-11
 * Cygnus NG-12
 * Cygnus NG-13
 * Cygnus NG-14
 * Cygnus NG-15
 * Cygnus NG-16
 * Cygnus OB2
 * Cygnus OB2-12
 * Cygnus OB2-8A
 * Cygnus OB7
 * Cygnus Orb-D1
 * Cygnus X (star complex)
 * Cygnus X-1
 * Cygnus X-3
 * Cygnus in Chinese astronomy
 * Cyllene (moon)
 * Cylon (Battlestar Galactica)
 * Cymbaline
 * Cymbeline (film)
 * Cymdeithas Edward Llwyd
 * Cynopterinae
 * Cynthia E. Rosenzweig
 * Cynthia Jameson
 * Cypher (gamer)
 * Cypress Hills Interprovincial Park
 * Cypress dome
 * Cyprián Karásek Lvovický
 * Cyprus Space Exploration Organisation
 * Cyprus scops owl
 * Cyrano (crater)
 * Cyril Hazard
 * Cyril Jackson (astronomer)
 * Cyril M. Kornbluth
 * Cyril Ponnamperuma
 * Cyrille Pierre Théodore Laplace
 * Cyrillus (crater)
 * Cysatus (crater)
 * Cyteen
 * Cytherean
 * Cytotoxicity
 * Czech Astronomical Olympiad
 * Czech Hydrometeorological Institute
 * Czech Republic
 * Czech Space Office
 * Czech names in space
 * Céline Bœhm
 * Cézanne (crater)
 * Côte d'Azur Observatory
 * Cāmara yoga
 * Cửu Long Delta Rice Research Institute
 * D Cancri
 * D Carinae
 * D Centauri
 * D Velorum
 * D'Alembert (crater)
 * D'Arrest (crater)
 * D'Arsonval (crater)
 * D'Orbigny meteorite
 * D-MARS
 * D-Mark
 * D-Rok
 * D-brane
 * D-term
 * D-type asteroid
 * D. Brainerd Holmes
 * D. Harold McNamara
 * DA-Group
 * DAMA/LIBRA
 * DAMA/NaI
 * DAMP Project
 * DAPPLE Project
 * DART (satellite)
 * DART radiative transfer model
 * DAVE (CP-7)
 * DAVINCI
 * DB AutoZug
 * DB-ALM
 * DC10 (nightclub)
 * DCMU
 * DD Microscopii
 * DDO 169
 * DDO 190
 * DDO 44
 * DEAP
 * DEEP-IN
 * DEEP2 Redshift Survey
 * DEN 0255−4700
 * DEN 1048−3956
 * DENIS J081730.0−615520
 * DENIS J082303.1−491201
 * DENIS-P J020529.0−115925
 * DENIS-P J082303.1−491201 b
 * DENIS-P J1058.7−1548
 * DENIS-P J1228.2−1547
 * DEPTHX
 * DESTINY+
 * DF-21
 * DF-224
 * DF-26
 * DF-31
 * DF-4
 * DF-41
 * DF-5
 * DFM Engineering
 * DFS Kopernikus
 * DFS Kopernikus-3
 * DG Canum Venaticorum
 * DG Tauri B
 * DGP model
 * DH Cephei
 * DH Tauri b
 * DH-1 (rocket)
 * DI Chamaeleontis
 * DI Herculis
 * DI Lacertae
 * DICE model
 * DIDO-2
 * DISPERSION21
 * DIVA software
 * DJ AM
 * DJ Antoine
 * DJ Baby Anne
 * DJ Bonics
 * DJ Boston
 * DJ Chus
 * DJ Cocoa Chanelle
 * DJ Dan
 * DJ Dean
 * DJ Dextrous
 * DJ Disciple
 * DJ EBK
 * DJ EZ
 * DJ Falcon
 * DJ Froggy
 * DJ Heavygrinder
 * DJ Hidden
 * DJ Hyper
 * DJ Irene
 * DJ JP
 * DJ Jazzy Joyce
 * DJ Keoki
 * DJ Lynnwood
 * DJ Paulette
 * DJ Puffy
 * DJ Puzzle
 * DJ Reid Speed
 * DJ Rekha
 * DJ Ricardo!
 * DJ Riddler
 * DJ Rolando
 * DJ Ron
 * DJ SFR
 * DJ SS
 * DJ Scene
 * DJ Skee
 * DJ Skribble
 * DJ Spinbad
 * DJ Sun
 * DJ Three
 * DJ Tonka
 * DJ Umek
 * DJ Vibe
 * DJ Yonny
 * DJ Ötzi
 * DK Lacertae
 * DL Crucis
 * DLA0817g
 * DLR-Archenhold Near Earth Objects Precovery Survey
 * DLR-Tubsat
 * DM Geminorum
 * DM Lyrae
 * DN Geminorum
 * DN Orionis
 * DN160822 03
 * DNA (Red Dwarf)
 * DNA Lounge
 * DO-160
 * DO-178B
 * DO-178C
 * DO-212
 * DO-219
 * DO-254
 * DODGE
 * DOME MicroDataCenter
 * DOME project
 * DORIS (satellite system)
 * DOS-2
 * DP Leonis
 * DP Leonis b
 * DPANN
 * DPHM-RS
 * DQ Herculis
 * DR 21
 * DR 6 nebula
 * DRAGONSat
 * DRAKON
 * DRDO Technology Demonstration Vessel
 * DRL (video game)
 * DS Andromedae
 * DS Crucis
 * DS Tucanae
 * DS/CFT correspondence
 * DS2000
 * DSE-Alpha
 * DSN Corporation
 * DSN-2
 * DSSAM Model
 * DSSAT
 * DSV Shinkai 2000
 * DSV Shinkai 6500
 * DT Virginis
 * DTED
 * DTU Space
 * DTUsat
 * DU Crucis
 * DU Lyncis
 * DU spectrophotometer
 * DUMAND Project
 * DUT1
 * DV Aquarii
 * DVS1
 * DWANGO
 * DX Andromedae
 * DX Cancri
 * DY Centauri
 * DY Persei
 * DY Persei variable
 * Da Liu Ren
 * Da Vinci (Martian crater)
 * Da Vinci (lunar crater)
 * Da Vinci Project
 * DaWood
 * Dabie-Sulu orogeny
 * Dacite
 * Daddy, Darling
 * Daddy-O
 * Daedalia Planum
 * Daedalus (crater)
 * Daffy Duck: The Marvin Missions
 * Daft Punk
 * Dafydd Williams
 * Dagmar Nordstrom
 * Dagobah
 * Dagr
 * Daguerre (crater)
 * Dainya yoga
 * Daisuke Enomoto
 * Daksha
 * Dakshinayana
 * Dale (crater)
 * Dale (landform)
 * Dale Arden
 * Dale Cruikshank
 * Dale D. Myers
 * Dale Frail
 * Dale Gardner
 * Dalek
 * Dalgaranga crater
 * Dali (crater)
 * Dali (goddess)
 * Dali Chasma
 * Dalilah (crater)
 * Dallas Abbott
 * Dallas DuBois
 * Dallasite
 * Dallol (hydrothermal system)
 * Dallol, Ethiopia
 * Dalton (crater)
 * Dalton Minimum
 * Daly (lunar crater)
 * Dambo
 * Damer (crater)
 * Damien Broderick
 * Damis
 * Damnatus
 * Damo (philosopher)
 * Damocloid
 * Damodara
 * Damoiseau (crater)
 * Damon Dash
 * Damon Knight
 * Damon Simonelli
 * Damon and Pythias
 * Damped Lyman-alpha system
 * Dan Alderson
 * Dan Aykroyd
 * Dan Cooper (comics)
 * Dan Dare
 * Dan H. Yaalon
 * Dan Hooper
 * Dan Milisavljevic
 * Dan Steffan
 * Dan Werthimer
 * Dana Bergstrom
 * Dana Mall
 * Dana Medal
 * Dana Weigel
 * Dana van Dreven
 * Dance bar
 * Dance of the Vampires (musical)
 * Dances with Smurfs
 * Dandelion Crater
 * Dandelion Energy
 * Dandridge MacFarlan Cole
 * Danger Run
 * Dangerously Close
 * Daniel (rocket)
 * Daniel 1
 * Daniel 2
 * Daniel 4
 * Daniel 7
 * Daniel 8
 * Daniel Apai
 * Daniel Batcheldor
 * Daniel Brandenstein
 * Daniel C. Burbank
 * Daniel Dos Santos
 * Daniel Dumbacher
 * Daniel E. Reichart
 * Daniel Eisenstein
 * Daniel Fry
 * Daniel Huber
 * Daniel Jackson (Stargate)
 * Daniel Jaffe
 * Daniel Jubb
 * Daniel K. Inouye Solar Telescope
 * Daniel Kirkwood
 * Daniel M. Kimmel
 * Daniel M. Popper
 * Daniel M. Tani
 * Daniel McKinsey
 * Daniel Murphy (bishop)
 * Daniel N. Baker
 * Daniel Parsons
 * Daniel Pomarède
 * Daniel Rouan
 * Daniel S. Schanck Observatory
 * Daniel Santbech
 * Daniel Sarokon
 * Daniel Scholl Observatory
 * Daniel Simon
 * Daniel St. Pierre
 * Daniel T. Barry
 * Daniel W. Bursch
 * Daniel du Toit
 * Daniel's
 * Daniela Billi
 * Daniela Calzetti
 * Daniell (crater)
 * Danielle Egnew
 * Danielson (crater)
 * Danilova (crater)
 * Danish Astronautical Society
 * Danish Astronomical Society
 * Danish Journal of Geography
 * Danish Organisation for Renewable Energy
 * Danish Space Research Institute
 * Danjon (crater)
 * Danjon scale
 * Dannie Heineman Prize for Astrophysics
 * Danny Cannon
 * Danny Carey
 * Danny Dunn and the Anti-Gravity Paint
 * Danny Flynn (artist)
 * Danny Frolich
 * Danny Goes to Mars
 * Danny Howells
 * Danny Tenaglia
 * Danny Thomas
 * Danse macabre (Saint-Saëns)
 * Dante (crater)
 * Dante 01
 * Dante Lauretta
 * Dantu (crater)
 * Danube Gorge (Weltenburg)
 * Danube Planum
 * Danube fan
 * Danz CM
 * Dao Vallis
 * Daphnis (moon)
 * Dar al Gani
 * Dar al-Muwaqqit
 * Dara Norman
 * Dara O'Rourke
 * Daran Norris
 * Darbhanga Planetarium
 * Darcy (unit)
 * Darcy's law
 * Daren Dochterman
 * Daresbury Laboratory
 * Daria Guidetti
 * Darian calendar
 * Daridorexant
 * Daridra yoga
 * Darin Epsilon
 * Darius (series)
 * Darius (video game)
 * Darius Cozmic Collection
 * Darius Force
 * Darius Gaiden
 * Darius II (video game)
 * Darius Twin
 * Dariusburst
 * Dark (TV series)
 * Dark Age (Brown novel)
 * Dark Ages Radio Explorer
 * Dark City (1998 film)
 * Dark Cloud
 * Dark Colony
 * Dark Doodad Nebula
 * Dark Emperor & Other Poems of the Night
 * Dark Empire
 * Dark Energy Spectroscopic Instrument
 * Dark Energy Survey
 * Dark Eyes (song)
 * Dark Harvest (2004 film)
 * Dark Horizon
 * Dark Horse (astronomy)
 * Dark Lord: The Rise of Darth Vader
 * Dark Matter (TV series)
 * Dark Matter (comics)
 * Dark Matter Particle Explorer
 * Dark Matter Time Projection Chamber
 * Dark Phoenix (film)
 * Dark Planet (film)
 * Dark Seed II
 * Dark Side (video game)
 * Dark Side of the Moon (2002 film)
 * Dark Skies
 * Dark Skies (film)
 * Dark Sky Observatory
 * Dark Star (film)
 * Dark They Were, and Golden-Eyed
 * Dark Times: The Path to Nowhere
 * Dark Universe Observatory
 * Dark Was the Night, Cold Was the Ground
 * Dark cabaret
 * Dark earth
 * Dark energy
 * Dark flow
 * Dark fluid
 * Dark galaxy
 * Dark globular cluster
 * Dark matter
 * Dark matter halo
 * Dark moon
 * Dark nebula
 * Dark photon
 * Dark radiation
 * Dark septate endophyte
 * Dark slope streak
 * Dark star (Newtonian mechanics)
 * Dark star (dark matter)
 * Dark therapy
 * Dark-energy star
 * Dark-frame subtraction
 * Dark-sky movement
 * Dark-sky preserve
 * DarkOrbit
 * DarkSide
 * DarkSpace
 * DarkStar One
 * Darken's equations
 * Darkening Sky
 * Darker (video game)
 * Darklight Conflict
 * Darkling (Star Trek: Voyager)
 * Darklore Manor
 * Darko Suvin
 * Darkover
 * Darkover Landfall
 * Darkover series
 * Darkspore
 * Darkstar: The Interactive Movie
 * Darktown Strutters
 * Darlah
 * Darlene Lim
 * Darling Cabaret
 * Darling Harbour
 * Darling's Observatory
 * Darney (crater)
 * Darrell K. Sweet
 * Darrell Schweitzer
 * Darren Emerson
 * Darren Tate
 * Darrieus–Landau instability
 * Darryl Knickrehm
 * Dart (rocketry)
 * Darth Vader
 * Darts
 * Darude
 * Darusentan
 * Darwin (Martian crater)
 * Darwin (lunar crater)
 * Darwin (spacecraft)
 * Darwin glass
 * Darwin–Radau equation
 * Daryabar Fossa
 * Daryal radar
 * Daryl F. Mallett
 * Daryl Haggard
 * Darzamat (crater)
 * Darío (crater)
 * Das (crater)
 * Dasadhyayi
 * Dash Express
 * Dasha (astrology)
 * Dashami
 * Dashboard of Sustainability
 * Data Processing and Analysis Consortium
 * Data assimilation
 * Data2map
 * DataScene
 * Date Bait
 * Datum of 2022
 * Datura discolor
 * Datura innoxia
 * Daubrée (crater)
 * Daubréelite
 * Dauphin (rocket)
 * Dave Audé
 * Dave Beer
 * Dave D'Mello
 * Dave Dorman
 * Dave Green (astrophysicist)
 * Dave Lavery
 * Dave Lee (DJ)
 * Dave Lister
 * Dave Pelz
 * Dave Truesdale
 * Dave Van Ronk
 * Dave VanDam
 * David & Carr
 * David (crater)
 * David A. Cherry
 * David A. Hardy
 * David A. Hubbard, Jr
 * David A. King (engineer)
 * David Alter
 * David Axon
 * David Ayer
 * David Bischoff
 * David Bohm
 * David Bowie
 * David Breed Beard
 * David Brown (entrepreneur)
 * David Burroughs Mattingly
 * David C. Hilmers
 * David C. Jewitt
 * David Carson (director)
 * David Catling
 * David Charbonneau
 * David Ciardi
 * David Clarke (journalist)
 * David Cole (record producer)
 * David Cole Observatory
 * David Crawford (astronomer)
 * David Criswell
 * David Cronenberg
 * David D. Balam
 * David D. Friedman
 * David D. Levine
 * David Davies (rugby league, born 1902)
 * David Drewry
 * David Dunlap Observatory
 * David Dunlap Observatory Catalogue
 * David Dunne (DJ)
 * David E. Skaggs Research Center
 * David E. Sugden
 * David Edgar Cartwright
 * David Elbaz
 * David F. Dinges
 * David Fabricius
 * David Field (astrophysicist)
 * David Florida Laboratory
 * David Flower
 * David Fowler (mathematician)
 * David Frawley
 * David Friesenhausen
 * David G. Hartwell
 * David G. Iadevaia
 * David G. Turner
 * David Gans
 * David Gerdes
 * David Gill (astronomer)
 * David Gregory (mathematician)
 * David Grinspoon
 * David Grutman
 * David Guetta
 * David H. Levy
 * David H. Lyth
 * David H. Staelin
 * David Healy (astronomer)
 * David Helfand
 * David Hilbert
 * David Holmes (musician)
 * David Hughes (astronomer)
 * David Icke
 * David J. Asher
 * David J. Lane (astronomer)
 * David J. Schlegel
 * David J. Stevenson
 * David J. Tholen
 * David Kennedy (astronomer)
 * David Kyle
 * David L. Heiserman
 * David L. Rabinowitz
 * David Langford
 * David Layzer
 * David Leestma
 * David Letterman
 * David Louis Band
 * David Lovelock
 * David M. Brown
 * David M. Jacobs
 * David M. Jones
 * David M. Walker (astronaut)
 * David Mackay (pilot)
 * David Malin
 * David Mancuso
 * David McClelland (physicist)
 * David McDaniel
 * David Meade (author)
 * David Merritt
 * David Morales
 * David Morrison (astrophysicist)
 * David Origanus
 * David P. Anderson
 * David Padilla (DJ)
 * David Palumbo
 * David Peck Todd
 * David Penn (DJ)
 * David Pringle
 * David Rank
 * David Reitze
 * David Rittenhouse
 * David Rothery
 * David S. Garnett
 * David S. McKay
 * David Saint-Jacques
 * David Schramm (astrophysicist)
 * David Scott
 * David Sobral
 * David Southwood
 * David Spade
 * David Spergel
 * David Stanley Evans
 * David Starr, Space Ranger
 * David Steel (Royal Navy officer)
 * David Stewart Jenkinson
 * David Stoddart (geographer)
 * David Strangway
 * David Sudarsky
 * David Suzuki Foundation
 * David Tegfan Davies
 * David Todd Wilkinson
 * David Twohy
 * David Vendetta
 * David Wands
 * David Waxman
 * David Wilkinson (theologian)
 * David Williams (astrochemist)
 * David Williams (card game player)
 * David Wolf (astronaut)
 * David Wu
 * David ben Yom Tov
 * Davidson Seamount
 * Davies (crater)
 * Davinia Taylor
 * Davisson (crater)
 * Davy (crater)
 * Dawes (Martian crater)
 * Dawes (lunar crater)
 * Dawn
 * Dawn (McLaughlin novel)
 * Dawn (spacecraft)
 * Dawn Sumner
 * Dawn deities
 * Dawn of the Dead (1978 film)
 * Dawn of the Dead (2004 film)
 * Dawn simulation
 * Dawson (crater)
 * Daxter (video game)
 * Day
 * Day Eleven: Love
 * Day length fluctuations
 * Day of the Dead (1985 film)
 * Day of the Dead (2008 film)
 * Day of the Dead 2: Contagium
 * Day of the Dead: Bloodline
 * Day of the Dumpster
 * Day-Glo Color Corp.
 * DayCent
 * Daya Bay Reactor Neutrino Experiment
 * Daybed
 * Daylighting (streams)
 * Days Are Forgotten
 * Daytime
 * Daz Saund
 * Dazhbog Patera
 * Dazu Lotus Manor
 * Dažbog
 * De Forest (crater)
 * De Gasparis (crater)
 * De Gerlache (crater)
 * De Graft (crater)
 * De Havilland Propellers
 * De Heptarchia Mystica
 * De La Rue (crater)
 * De Lalande (crater)
 * De Laval nozzle
 * De Moraes (crater)
 * De Morgan (crater)
 * De Natura Fossilium
 * De Phenomenis in Orbe Lunae
 * De Roy (crater)
 * De Sitter (crater)
 * De Sitter effect
 * De Sitter invariant special relativity
 * De Sitter space
 * De Sitter universe
 * De Sitter–Schwarzschild metric
 * De Vaucouleurs's law
 * De Vico (crater)
 * De Vries (crater)
 * De revolutionibus orbium coelestium
 * De sphaera mundi
 * De systemate orbis cometici, deque admirandis coeli characteribus
 * DeFRaG
 * DeHackEd
 * DeLisle Stewart
 * DeLorme
 * Deacon (rocket)
 * Dead Beat (The Dresden Files)
 * Dead Boy Detectives
 * Dead Inside (song)
 * Dead Man's Party (song)
 * Dead Moon (video game)
 * Dead Moon Circus
 * Dead Sea
 * Dead Space (mobile game)
 * Dead Space (video game)
 * Dead Space 2
 * Dead Space 3
 * Dead Space Ignition
 * Dead Space: Extraction
 * Dead Star/In Your World
 * Dead or Alive 4
 * Dead zone (ecology)
 * Dead-ice
 * Deadlock: Planetary Conquest
 * Deadly Dreams
 * Deadly Earnest
 * Deadly Weapons
 * Dean Benjamin McLaughlin
 * Dean Grennell
 * Dean Johnson (entertainer)
 * Dean Martin
 * Dean Regas
 * Dean drive
 * Dear Dave
 * Dear God No!
 * Dear Pen Pal
 * DearMoon project
 * Death (DC Comics)
 * Death Busters
 * Death Dimension
 * Death Drug
 * Death Faces
 * Death Force
 * Death Game
 * Death Guild
 * Death Hawk
 * Death Journey
 * Death Makes a Holiday
 * Death Nurse
 * Death Nurse 2
 * Death Racers
 * Death Scenes
 * Death Screams
 * Death Ship (The Twilight Zone)
 * Death Star
 * Death Star (business)
 * Death Troopers
 * Death Valley
 * Death Valley National Park
 * Death Warmed Up
 * Death by Black Hole
 * Death by GPS
 * Death from the Skies!
 * Death horoscopes in Tibetan Buddhism
 * Death of Max Spiers
 * Death on Demand
 * Death's Domain
 * Death: At Death's Door
 * Death: The High Cost of Living
 * Death: The Time of Your Life
 * Deathstalker (series)
 * Debaryomyces
 * Debaryomyces hansenii
 * Debatable Space
 * Debate between Winter and Summer
 * Debate between sheep and grain
 * Debbie Hughes
 * Debes (crater)
 * Debility (astrology)
 * Deborah Kelley
 * Deborah Steinberg
 * Deborah Swackhamer
 * Debra Elmegreen
 * Debra Fischer
 * Debrecen Heliophysical Observatory
 * Debris disk
 * Debris flow
 * Debus (crater)
 * Debussy (crater)
 * Debussy quadrangle
 * Debye
 * Debye (crater)
 * Debye function
 * Debye length
 * Debye sheath
 * Debye–Falkenhagen effect
 * Debye–Hückel equation
 * Debye–Hückel theory
 * Debye–Waller factor
 * Decadal Planning Team
 * Decadary Cult
 * Decade Volcanoes
 * Decagram (geometry)
 * Decan
 * Decan (astrology)
 * Decaturville crater
 * Deceit (1989 film)
 * Deceleration parameter
 * December (Roman month)
 * December solstice
 * Decentralized wastewater system
 * Deception Point
 * Dechen (crater)
 * Deci-hertz Interferometer Gravitational wave Observatory
 * Decimal time
 * Decker (TV series)
 * Declan Perkins
 * Declaration recognising the Right to a Flag of States having no Sea-coast
 * Declination
 * Deconfinement
 * Decorah crater
 * Decoupling (cosmology)
 * Decree of Canopus
 * Dee O'Hara
 * Deep Bay crater
 * Deep Black (1986 book)
 * Deep Dish (duo)
 * Deep Ecliptic Survey
 * Deep Impact (film)
 * Deep Impact (spacecraft)
 * Deep Lens Survey
 * Deep Navigation
 * Deep Near Infrared Survey of the Southern Sky
 * Deep Rock Galactic
 * Deep Sea Conservation Coalition
 * Deep Sea Research
 * Deep Space 1
 * Deep Space 2
 * Deep Space Atomic Clock
 * Deep Space Climate Observatory
 * Deep Space Habitat
 * Deep Space Homer
 * Deep Space Industries
 * Deep Space Nine (fictional space station)
 * Deep Space Optical Communications
 * Deep Space Systems
 * Deep Space Transport
 * Deep Space: Operation Copernicus
 * Deep Underground Neutrino Experiment
 * Deep carbon cycle
 * Deep chlorophyll maximum
 * Deep crustal hot zone
 * Deep ecology
 * Deep geological repository
 * Deep scattering layer
 * Deep sea community
 * Deep sea mining
 * Deep sleep therapy
 * Deep space bands
 * Deep space exploration
 * Deep time
 * Deep water cycle
 * Deep-Sea Hydrothermal Vent Euryarchaeota 2
 * Deep-Sky Planner
 * Deep-level transient spectroscopy
 * Deep-ocean Assessment and Reporting of Tsunamis
 * Deep-sea exploration
 * Deep-sky object
 * DeepMap
 * Deeper, Deeper, Deeper Still
 * Def by Temptation
 * Defender (1981 video game)
 * Defenders of the Earth
 * Defenestration
 * Defense Advanced GPS Receiver
 * Defense Grid 2
 * Defense Grid: The Awakening
 * Defense Meteorological Satellite Program
 * Defense Satellite Communications System
 * Defense Support Program
 * Deferent and epicycle
 * Defiance (TV series)
 * Deficit irrigation
 * Definition of planet
 * Defoliant
 * Deformation bands
 * Deformed Hermitian Yang–Mills equation
 * Defying Gravity (TV series)
 * Degas (crater)
 * Degenerate Higher-Order Scalar-Tensor theories
 * Degenerate matter
 * Deglaciation
 * Degradation (geology)
 * Degree Angular Scale Interferometer
 * Degree Confluence Project
 * Degree of ionization
 * Degree of polarization
 * Degrowth
 * Deidre Hunter
 * Deimos (moon)
 * Deimos Imaging
 * Deimos and Phobos Interior Explorer
 * Deimos and The Resurrection of Mars
 * Deimos-1
 * Deimos-2
 * Deinococcus
 * Deinococcus apachensis
 * Deinococcus ficus
 * Deinococcus frigens
 * Deinococcus geothermalis
 * Deinococcus marmoris
 * Deinococcus murrayi
 * Deinococcus radiodurans
 * Deinococcus saxicola
 * Deinococcus–Thermus
 * Dejnev (Martian crater)
 * Dekatron
 * Deke Slayton
 * Delacroix (crater)
 * Delambre (crater)
 * Delaunay (crater)
 * Delaunay tessellation field estimator
 * Delaware Mineralogical Society
 * Delayed sleep phase disorder
 * Delco Carousel
 * Delfi-C3
 * Delfi-n3Xt
 * Deliberate crash landings on extraterrestrial bodies
 * Delinquent Daughters
 * Delisle (crater)
 * Dell Horoscope
 * Della Duck
 * Dellen
 * Dellinger (crater)
 * Delmotte (crater)
 * Delocated
 * Delorazepam
 * Delphine Lannuzel
 * Delphinus
 * Delphinus in Chinese astronomy
 * Delporte (crater)
 * Delta (rocket family)
 * Delta 0100
 * Delta 1000
 * Delta 2000
 * Delta A
 * Delta Andromedae
 * Delta Antliae
 * Delta Apodis
 * Delta Aquarii
 * Delta Aquilae
 * Delta Arae
 * Delta Arietis
 * Delta Aurigae
 * Delta Aurigids
 * Delta B
 * Delta Boötis
 * Delta C
 * Delta Caeli
 * Delta Cancri
 * Delta Cancrids
 * Delta Canis Majoris
 * Delta Canis Minoris
 * Delta Capricorni
 * Delta Cassiopeiae
 * Delta Centauri
 * Delta Cephei
 * Delta Ceti
 * Delta Chamaeleontis
 * Delta Circini
 * Delta Columbae
 * Delta Coronae Australis
 * Delta Coronae Borealis
 * Delta Corvi
 * Delta Crateris
 * Delta Cryogenic Second Stage
 * Delta Cygni
 * Delta D
 * Delta Delphini
 * Delta Doradus
 * Delta Draconis
 * Delta Dreamflight
 * Delta E
 * Delta Equulei
 * Delta Eridani
 * Delta Fornacis
 * Delta G
 * Delta Geminorum
 * Delta Gruis
 * Delta Herculis
 * Delta Horologii
 * Delta Hydrae
 * Delta Hydri
 * Delta II
 * Delta III
 * Delta IV
 * Delta Indi
 * Delta J
 * Delta L
 * Delta Leonis
 * Delta Leporis
 * Delta Librae
 * Delta Lupi
 * Delta Lyrae
 * Delta Lyrae cluster
 * Delta M
 * Delta Mensae
 * Delta Microscopii
 * Delta Monocerotis
 * Delta Muscae
 * Delta N
 * Delta Normae
 * Delta Octantis
 * Delta Ophiuchi
 * Delta Pavonis
 * Delta Persei
 * Delta Phoenicis
 * Delta Pictoris
 * Delta Piscis Austrini
 * Delta Piscium
 * Delta Pyxidis
 * Delta Reticuli
 * Delta Sagittae
 * Delta Sagittarii
 * Delta Scorpii
 * Delta Sculptoris
 * Delta Scuti
 * Delta Scuti variable
 * Delta Serpentis
 * Delta Sextantis
 * Delta Squadron (video game)
 * Delta Tauri
 * Delta Telescopii
 * Delta Trianguli
 * Delta Trianguli Australis
 * Delta Tucanae
 * Delta Ursae Majoris
 * Delta Ursae Minoris
 * Delta Velorum
 * Delta Virginis
 * Delta Volantis
 * Delta-DOR
 * Delta-K
 * Delta-P
 * Delta-v
 * Delta-v budget
 * Delta1 Canis Minoris
 * Delta1 Chamaeleontis
 * Delta1 Gruis
 * Delta1 Lyrae
 * Delta1 Tauri
 * Delta1 Telescopii
 * Delta2 Canis Minoris
 * Delta2 Chamaeleontis
 * Delta2 Gruis
 * Delta2 Lyrae
 * Delta2 Tauri
 * Delta2 Telescopii
 * Delta3 Canis Minoris
 * Delta3 Tauri
 * Deluc (crater)
 * Dembowski (crater)
 * Dementia 13
 * Demequinaceae
 * Demeter (satellite)
 * Demetrios Christodoulou
 * DemoSat
 * Democrates
 * Democratic principle
 * Democritus (crater)
 * Demographics of the world
 * Demography
 * Demon Seed (video game)
 * Demonax (crater)
 * Demonic possession
 * Demons & Angels
 * Demons (Star Trek: Enterprise)
 * Demonstration and Science Experiments
 * Demonwarp
 * Den sommeren jeg fylte 15
 * Denbigh Arms
 * Dendera zodiac
 * Dendrochronologia
 * Deneb
 * Deneb Karentz
 * Deneb el Okab
 * Deneb in fiction
 * Denebola
 * Denel Dynamics Bateleur
 * Deng Qingming
 * Denis Albert Bardou
 * Denis Burgarella
 * Denis Kenzo
 * Denis Matveev
 * Denis Villeneuve
 * Denise Okuda
 * Denison Olmsted
 * Denitrification
 * Denitrifying bacteria
 * Denma
 * Denmark Arms
 * Denning (Martian crater)
 * Denning (lunar crater)
 * Dennis Brutus
 * Dennis Chamberland
 * Dennis Ferrer
 * Dennis Fong
 * Dennis K. Chesney
 * Dennis Lyons
 * Dennis M. Bushnell
 * Dennis Mammana
 * Dennis Rawlins
 * Dennis Tito
 * Dennis W. Sciama
 * Dennis di Cicco
 * Denny Tsettos
 * Dense Pack
 * Dense plasma focus
 * Density contrast
 * Density wave theory
 * Denso Ten
 * Denudation
 * Denudation chronology
 * Denver Museum of Nature and Science
 * Denver Zephyr
 * Deorbit of Mir
 * Department of Defense Manned Space Flight Support Office
 * Department of Geodesy GUT
 * Department of Physics and Astronomy, University of Manchester
 * Department of Space
 * Depocenter
 * Depolarization ratio
 * Depolarizer (optics)
 * Deponia (video game)
 * Deponia Doomsday
 * Deported Women of the SS Special Section
 * Depositional environment
 * Depression (geology)
 * Depth conversion
 * Depth in a well
 * Depth sounding
 * Depth–slope product
 * Depyrogenation
 * Der Alte Schwede
 * Der Fan
 * Der Naturforscher
 * Der Vampyr
 * Der Vampyr (Lindpaintner)
 * Derain (crater)
 * Derain quadrangle
 * Derek Frank Lawden
 * Derek Jackson
 * Derek Keir
 * Derek Long
 * Derek Riggs
 * Derek Vonberg
 * Derek Walker-Smith, Baron Broxbourne
 * Derivations of the Lorentz transformations
 * Derivative house
 * Deriving the Schwarzschild solution
 * Derk-Jan Dijk
 * Dermabacteraceae
 * Dermott's law
 * Derrick May (musician)
 * Derrick Pitts
 * Dersios sinkhole
 * Derzhavin (crater)
 * Desargues (crater)
 * Desbutal
 * Descartes (crater)
 * Descartes Highlands
 * Descendant (astrology)
 * Descent (1995 video game)
 * Descent (Star Trek: The Next Generation)
 * Descent (upcoming video game)
 * Descent 3
 * Descent propulsion system
 * Descent: FreeSpace – The Great War
 * Deschloroetizolam
 * Desdemona (moon)
 * Deseilligny (crater)
 * Desert
 * Desert Beaver Observatory
 * Desert Eagle Observatory
 * Desert Fireball Network
 * Desert Research Institute
 * Desert Research and Technology Studies
 * Desert Wind
 * Desert pavement
 * Desert planet
 * Desert varnish
 * Desertification
 * Deserts and xeric shrublands
 * Design Bureau for Special Machine-Building
 * Desire (2017 film)
 * Desire (ship)
 * Deskee
 * Deslandres (crater)
 * Deslandres table
 * Desolation Road
 * Despicable Me (film)
 * Despina (moon)
 * Despréz (crater)
 * Destination Earth
 * Destination Mars
 * Destination Moon (film)
 * Destination: Imagination
 * Destination: Void
 * Destiny (ISS module)
 * Destiny (video game)
 * Destiny 2
 * Destiny 2 post-release content
 * Destiny in Space
 * Destiny post-release content
 * Destiny: A Chronicle of Deaths Foretold
 * Destiny: The Taken King
 * Destroy All Humans! 2
 * Destroy All Monsters
 * Desulfocella halophila
 * Desulfoconvexum algidum
 * Desulfofaba gelida
 * Desulfofrigus fragile
 * Desulfofrigus oceanense
 * Desulfohalobium
 * Desulfovibrio arcticus
 * Desulfovibrio ferrireducens
 * Desulfovirgula
 * Desulfurobacterium thermolithotrophum
 * Desulfurococcaceae
 * Desulfurococcales
 * Desulfurococcus
 * Desus Nice
 * Detached object
 * Detecting Earth from distant star-based systems
 * Detention basin
 * Determination of the day of the week
 * Detlef Quadfasel
 * Detriment (astrology)
 * Detrital zircon geochronology
 * Detritivore
 * Detroit 9000
 * Detroit Opera House
 * Detunatele
 * Deuterium
 * Deuterium arc lamp
 * Deuterium fusion
 * Deuteronilus Mensae
 * Deutsch (crater)
 * Deutsche Arbeitsgemeinschaft zum Schutz der Eulen
 * Deutsches Geodätisches Forschungsinstitut
 * Devasthal Observatory
 * Development and Educational Communication Unit
 * Development of Doom
 * Development of The Elder Scrolls IV: Oblivion
 * Development of the Commercial Crew Program
 * Developmental toxicity
 * Devil Girl from Mars
 * Devil Hunter (film)
 * Devil among the tailors
 * Devil's Angels
 * Devil's Night
 * Devil's Night (American Horror Story)
 * Devil's Sinkhole State Natural Area
 * Devon Bat Group
 * Devonshire Arms, Fitzroy
 * Dew point
 * Dewar (crater)
 * Dewbow
 * Dewi Ratih
 * Dexamyl
 * Dexter electron transfer
 * Dextre
 * Dextrorotation and levorotation
 * Dezful (missile)
 * Dhala crater
 * Dhana yoga
 * Dhanishta
 * Dhanu (month)
 * Dharma Karmadhipati yoga
 * Dhatri
 * Dhisana
 * Dhruva Space
 * DiRAC
 * Dia (moon)
 * Diabasbrottet Quarry
 * Diachronism
 * Diacria quadrangle
 * Diagenesis
 * Dialing scales
 * Dialogo de Cecco di Ronchitti da Bruzene in perpuosito de la stella Nuova
 * Dialogue Concerning the Two Chief World Systems
 * Dialogues in Human Geography
 * Diamant
 * Diamantina Fracture Zone
 * Diamantina River ring feature
 * Diamicton
 * Diamond
 * Diamond (dog)
 * Diamond Cross
 * Diamond Light Source
 * Diamond flaw
 * Diana (Felderhoff)
 * Diana (mythology)
 * Diana Nemorensis
 * Diana Pavlac Glyer
 * Diana Prince
 * Diana Valencia
 * Diana the Huntress Fountain
 * Diane L. Evans
 * Diane McKnight
 * Dianic Wicca
 * Diapir
 * Diary of a Camper
 * Diary of a Nudist
 * Diary of the Dead
 * Diaspora (video game)
 * Diathermancy
 * Diatomaceous earth
 * Diatomic carbon
 * Diazotroph
 * Dibyendu Nandi
 * Dichloralphenazone
 * Dichroism
 * Dichroscope
 * Dick Assman
 * Dick Bond (astrophysicist)
 * Dick Dyszel
 * Dick Scobee
 * Dick Smith (software)
 * Dicke effect
 * Dickens (crater)
 * Dickinson (crater)
 * Dictionary of Occult, Hermetic and Alchemical Sigils
 * Dicuil
 * Did You Ever See a Dream Walking?
 * Diddy (DJ)
 * Diderot (crater)
 * Didier Queloz
 * Die Arche
 * Die Astronautin
 * Die Glocke (hoax)
 * Die Katakombe
 * Die Schneider Krankheit
 * Diedrich Wattenberg
 * Diego Rodríguez (mathematician)
 * Diego de Pantoja
 * Dielectric breakdown model
 * Dielectric spectroscopy
 * Dienst der Hydrografie
 * Dies (deity)
 * Dieter Grau
 * Diether Krebs
 * Dietzia psychralcaliphila
 * Difebarbamate
 * Diffeomorphism constraint
 * Differential Doppler effect
 * Differential GPS
 * Differential dynamic microscopy
 * Differential interference contrast microscopy
 * Differential optical absorption spectroscopy
 * Differential rotation
 * Differential stress
 * Diffraction
 * Diffraction efficiency
 * Diffraction formalism
 * Diffraction grating
 * Diffraction in time
 * Diffraction spike
 * Diffraction-limited system
 * Diffractive beam splitter
 * Diffuse Infrared Background Experiment
 * Diffuse extragalactic background radiation
 * Diffuse interstellar bands
 * Diffuse reflectance infrared Fourier transform spectroscopy
 * Diffuse reflectance spectroscopy
 * Diffuse series
 * Diffuse sky radiation
 * Diffuse supernova neutrino background
 * Diffusing-wave spectroscopy
 * Diffusion Inhibitor
 * Diffusion chronometry
 * Diffusion damping
 * Diffusion-limited escape
 * Difluorosilane
 * Dig Allen Space Explorer
 * Dig Down
 * Digicel IMAX
 * Digiscoping
 * Digistar
 * Digistar Users Group
 * Digital Access to a Sky Century @ Harvard
 * Digital Universe Atlas
 * Digital anchor
 * Digital elevation model
 * Digital line graph
 * Digital outcrop model
 * Digital raster graphic
 * Digital soil mapping
 * Digital sundial
 * DigitalGlobe
 * Digitalism (band)
 * Digitized Sky Survey
 * Dikran Tahta
 * Dilaton
 * Dilhan Eryurt
 * Dillon & Dickins
 * Dillon's Reprise Room
 * Dilly (crater)
 * Dilmun (Titan)
 * Dilution of precision (navigation)
 * Diluvium
 * Dimension Jump (Red Dwarf episode)
 * Dimension X (Teenage Mutant Ninja Turtles)
 * Dimension X (video game)
 * Dimensional reduction
 * Dimethyl sulfide
 * Dimitar Sasselov
 * Dimitri Hegemann
 * Dimitri Mihalas
 * Dimmitt (meteorite)
 * Dimorphos
 * Dinaric Alps
 * Diner
 * Dingle Dell meteorite
 * Dingo Bar
 * Dino (singer)
 * Dinocyst
 * Dinorwic (crater)
 * Dinosaucers
 * Dinosaur (film)
 * Dinosaur Planet (novel)
 * Dinosaur renaissance
 * Dinosporin
 * Dinsmore Alter
 * Diné Bahaneʼ
 * Diocotron instability
 * Diodorus of Aspendus
 * Diogenite
 * Diogo Abreu (geographer)
 * Dione (moon)
 * Dionisia
 * Dionysis Simopoulos
 * Dionysius (crater)
 * Diophantus (crater)
 * Dioptra
 * Dioptrics
 * Dioxin Reassessment Report
 * Dip slope
 * Diphascon
 * Diphenhydramine
 * Diplomat (train)
 * Diplomatic Immunity (novel)
 * Dipole anisotropy
 * Dipole model of the Earth's magnetic field
 * Dipper (Chinese constellation)
 * Dirac large numbers hypothesis
 * Dirac string
 * Direct DNA damage
 * Direct Fusion Drive
 * Direct ascent
 * Direct collapse black hole
 * Direct exchange geothermal heat pump
 * Direct insolation
 * Directed Energy System for Targeting of Asteroids and ExplorRation
 * Directed panspermia
 * Direction finding
 * Directional Infrared Counter Measures
 * Directional Recoil Identification from Tracks
 * Directional boring
 * Director General of the European Space Agency
 * Dirichlet (crater)
 * Dirichlet's ellipsoidal problem
 * Dirk Brouwer
 * Dirk Frimout
 * Dirk Klinkenberg
 * Dirk Reuyl
 * Dirk Schulze-Makuch
 * Dirk Terrell
 * Dirt! The Movie
 * Dirty Cop No Donut
 * Dirty Water Club
 * Dirtyphonics
 * Disaster Monitoring Constellation
 * Disc galaxy
 * Disc permeameter
 * Discharge (hydrology)
 * Disco Bloodbath
 * Disco Fever
 * Disco Godfather
 * Disco ball
 * Discordant coastline
 * Discotic liquid crystal
 * Discourse on Comets
 * Discourse on the Tides
 * Discoverer 1
 * Discoverer 10
 * Discoverer 11
 * Discoverer 12
 * Discoverer 14
 * Discoverer 16
 * Discoverer 17
 * Discoverer 18
 * Discoverer 19
 * Discoverer 2
 * Discoverer 20
 * Discoverer 21
 * Discoverer 22
 * Discoverer 23
 * Discoverer 24
 * Discoverer 25
 * Discoverer 26
 * Discoverer 27
 * Discoverer 28
 * Discoverer 29
 * Discoverer 3
 * Discoverer 30
 * Discoverer 31
 * Discoverer 32
 * Discoverer 33
 * Discoverer 34
 * Discoverer 35
 * Discoverer 36
 * Discoverer 37
 * Discoverer 4
 * Discoverer 5
 * Discoverer 6
 * Discoverer 7
 * Discoverer 8
 * Discoverer 9
 * Discoveries of exoplanets
 * Discovery Investigations
 * Discovery Museum and Planetarium
 * Discovery One
 * Discovery Rupes
 * Discovery Seamounts
 * Discovery and exploration of the Solar System
 * Discovery image
 * Discovery of Neptune
 * Discovery of cosmic microwave background radiation
 * Discredited hypotheses for the Cambrian explosion
 * Discrete debris accumulation
 * Discrete ordinates method
 * Discrete spectrum
 * Discworld (video game)
 * Discworld (world)
 * Discworld Diary
 * Discworld II: Missing Presumed...!?
 * Discworld MUD
 * Discworld Noir
 * Disease causative agent
 * Disease suppressive soils
 * Diseases from Space
 * Disinfection by-product
 * Disjunct distribution
 * Disk Detective
 * Disk-over-water method
 * Disney (crater)
 * Disney Dreams!
 * Disney Gifts of Christmas
 * Disney Illuminations
 * Disney Infinity 3.0
 * Disney Village
 * Disney in the Stars
 * Disney utilidor system
 * Disney's Celebrate America
 * Disney's Halloween Treat
 * Disney's Lilo & Stitch (Game Boy Advance video game)
 * Disney's LuminAria
 * Disney's Nightmare in the Sky
 * Disney's Stitch: Experiment 626
 * Disneyland Forever
 * Disneyland Monorail System
 * Disneyland Railroad
 * Disocactus anguliger
 * Disocactus crenatus
 * Dispersion (geology)
 * Disrupted planet
 * Dissimilatory metal-reducing microorganisms
 * Dissociative recombination
 * Dissolved load
 * Dissolved organic carbon
 * Distance measures (cosmology)
 * Distances Between Ports
 * Distant (upcoming film)
 * Distant Worlds
 * Distant minor planet
 * Distant retrograde orbit
 * Distorted Schwarzschild metric
 * Distortion
 * Distribution of lightning
 * District 9
 * Disturbance storm time index
 * Disulfur monoxide
 * Dita Von Teese
 * Diurnal cycle
 * Diurnal motion
 * Diurnal sign
 * Diurnality
 * Divalia Fossa
 * Dive bar (drinking establishment)
 * Divertor
 * Divided Loyalties (novel)
 * Dividing engine
 * Divination by Astrological and Meteorological Phenomena
 * Divine Adoratrice of Amun
 * Diviner
 * Division for Planetary Sciences
 * Division on Dynamical Astronomy
 * Diwali
 * Diwata-1
 * Diwata-2
 * Dixie Flagler
 * Dixie Flyer (train)
 * Diyar Planitia
 * Dizzya
 * Django Unchained
 * Djordje Stanojević
 * Djorgovski 1
 * Dmitri Kondratyev
 * Dmitri the Astronaut
 * Dmitrij F. Lupishko
 * Dmitriy G. Stankevich
 * Dmitriy Petelin
 * Dmitry Chestnov
 * Dmitry Dmitrievich Maksutov
 * Dmitry Okhotsimsky
 * Dmitry V. Bisikalo
 * Dmitry Zaikin
 * Dmitryivanovite
 * Dnepropetrovsk Sputnik
 * Dnestr radar
 * Dnipropetrovsk Oblast
 * Do Androids Dream of Electric Sheep?
 * Do They Know It's Hallowe'en?
 * Do You Realize??
 * Dobrovol'skiy (crater)
 * Dobson ozone spectrophotometer
 * Dobsonian telescope
 * Dock Creek
 * Dock Road Edwardian Pumping Station
 * Docking Compartment
 * Docking and berthing of spacecraft
 * Doctor (Loïc Nottet song)
 * Doctor Blood's Coffin
 * Doctor Destiny
 * Doctor Doctor (UFO song)
 * Doctor Dolittle in the Moon
 * Doctor Light (Kimiyo Hoshi)
 * Doctor Madblood
 * Doctor Omega
 * Doctor Who
 * Doctor Who – The Ultimate Adventure
 * Document 12-571-3570
 * Dodecagram
 * Dodecatemoria
 * Doerfel (crater)
 * Dog (zodiac)
 * Dog and Duck, Soho
 * Dog days
 * Dogs (Pink Floyd song)
 * Dogsbody (novel)
 * Dogyuun
 * Dohkwibuhch
 * Doina (Eminescu)
 * Dolce e selvaggio
 * Dolemite
 * Doll Asylum
 * Dollfus (crater)
 * Dollond (crater)
 * Dolomitization
 * Dolphin Nature Conservation Society
 * Dolphin lamp standard
 * Domain wall (string theory)
 * Domains of Darkover
 * Dombarovsky Air Base
 * Dome A
 * Dome C
 * Domed city
 * Domenico Guglielmini
 * Domenico Maria Novara da Ferrara
 * Domenico Troili
 * Domeyko Fault
 * Domicile (astrology)
 * Dominant Species (video game)
 * Domination (video game)
 * Dominic A. Antonelli
 * Dominic Burns
 * Dominic L. Pudwill Gorie
 * Dominical letter
 * Dominici (crater)
 * Dominion Astrophysical Observatory
 * Dominion Observatory
 * Dominion Observatory, Wellington
 * Dominion Radio Astrophysical Observatory
 * Dominoes
 * Domovoy (crater)
 * Don Camilo
 * Don Davis (artist)
 * Don Diablo
 * Don Dixon (artist)
 * Don Dohler
 * Don Eyles
 * Don Flickinger
 * Don Glaciation
 * Don Harrington Discovery Center
 * Don Ivan Punchatz
 * Don L. Lind
 * Don Maitz
 * Don Melnick
 * Don Pendleton
 * Don Puddy
 * Don Sakers
 * Don Stephens
 * Don VandenBerg
 * Don Wilhelms
 * Don Winget
 * Don't Blame the Stork
 * Don't Deliver Us from Evil
 * Don't Escape: 4 Days to Survive
 * Don't Fear the Roofer
 * Don't Go in the House
 * Don't Go in the Woods (1981 film)
 * Don't Have a Cow (That's So Raven)
 * Don't Leave Me Now (Pink Floyd song)
 * Don't Look Up (upcoming film)
 * Don't Open till Christmas
 * Don-2N radar
 * Donal T. Manahan
 * Donald A. Thomas
 * Donald A. Wollheim
 * Donald B. Campbell
 * Donald Blackwell
 * Donald C. Backer
 * Donald C. Parker
 * Donald E. Brownlee
 * Donald E. Ford
 * Donald E. Williams
 * Donald Edward Osterbrock
 * Donald Figer
 * Donald G. Keller
 * Donald Glaude
 * Donald H. Peterson
 * Donald Holmquest
 * Donald Howard Menzel
 * Donald J. Atwood Jr.
 * Donald J. Kessler
 * Donald Keyhoe
 * Donald Kurtz
 * Donald L. Mallick
 * Donald Liebenberg
 * Donald Lynden-Bell
 * Donald MacRae (astronomer)
 * Donald Machholz
 * Donald Mackay (scientist)
 * Donald Pettit
 * Donald R. Davis
 * Donald R. F. Harleman
 * Donald R. McMonagle
 * Donald Sadler
 * Donald's Halloween Scare
 * Donaldson–Thomas theory
 * Donat Fault
 * Donat Wentzel
 * Donatella Ricci
 * Donati (crater)
 * Donatiello I
 * Donato Giancola
 * Donelaitis (crater)
 * Donella Meadows
 * Dong Fang Hong 2
 * Dong Fang Hong I
 * Dong Neng-2
 * Dongdamen Night Market
 * Dongfanghong program
 * Donghuamen Night Market
 * Donn F. Eisele
 * Donna (crater)
 * Donna Shirley
 * Donne (crater)
 * Donner (crater)
 * Donnie Darko
 * Donnie Darko: The Director's Cut
 * DontStayIn
 * Doom (1993 video game)
 * Doom (2016 video game)
 * Doom (film)
 * Doom (franchise)
 * Doom 3
 * Doom 3: BFG Edition
 * Doom 3: Resurrection of Evil
 * Doom 64
 * Doom Eternal
 * Doom II
 * Doom II RPG
 * Doom Mons
 * Doom RPG
 * Doom Resurrection
 * Doom engine
 * Doom modding
 * Doom: Annihilation
 * Doom: The Boardgame
 * Doomguy
 * Doomlord
 * Doomsday (Doctor Who)
 * Doomsday Book (film)
 * Doomsday Machine (film)
 * Doomsday Rock
 * Doomsday rule
 * Doppel-Sport Panoramic Camera
 * Doppelgänger (1969 film)
 * Doppelmayer (crater)
 * Doppler (crater)
 * Doppler Shift Compensation
 * Doppler broadening
 * Doppler cooling
 * Doppler effect
 * Doppler imaging
 * Doppler parameter
 * Doppler radio direction finding
 * Doppler spectroscopy
 * Doppler tracking
 * Doppler velocity sensor
 * Dopplergraph
 * Dopplerite
 * Dora (case study)
 * Dora the Explorer: Journey to the Purple Planet
 * Dorado
 * Dorado Group
 * Dorado in Chinese astronomy
 * Doraemon: Nobita Drifts in the Universe
 * Doraemon: Nobita and the Animal Planet
 * Doraemon: Nobita and the Galaxy Super-express
 * Doraemon: Nobita's Chronicle of the Moon Exploration
 * Doraemon: Nobita's Little Star Wars
 * Doraemon: The Record of Nobita's Spaceblazer
 * Doraemon: The Records of Nobita, Spaceblazer
 * Dorbod Banner
 * Dorian Gray (club)
 * Doris Abele
 * Doris Daou
 * Doris Vickers
 * Dorota Skowron
 * Dorothea Klumpke
 * Dorothy (Charonian crater)
 * Dorothy (Venusian crater)
 * Dorothy Blackwell McNeil
 * Dorothy Dandridge
 * Dorothy Hill Medal
 * Dorothy J. Heydt
 * Dorothy Mengering
 * Dorothy Metcalf-Lindenburger
 * Dorrit Hoffleit
 * Dorsa Aldrovandi
 * Dorsa Andrusov
 * Dorsa Argand
 * Dorsa Argentea Formation
 * Dorsa Barlow
 * Dorsa Burnet
 * Dorsa Cato
 * Dorsa Dana
 * Dorsa Ewing
 * Dorsa Geikie
 * Dorsa Harker
 * Dorsa Lister
 * Dorsa Mawson
 * Dorsa Rubey
 * Dorsa Smirnov
 * Dorsa Sorby
 * Dorsa Stille
 * Dorsa Tetyaev
 * Dorsa Whiston
 * Dorsum Arduino
 * Dorsum Azara
 * Dorsum Bucher
 * Dorsum Buckland
 * Dorsum Cayeux
 * Dorsum Cloos
 * Dorsum Cushman
 * Dorsum Gast
 * Dorsum Grabau
 * Dorsum Guettard
 * Dorsum Heim
 * Dorsum Higazy
 * Dorsum Nicol
 * Dorsum Niggli
 * Dorsum Oppel
 * Dorsum Owen
 * Dorsum Scilla
 * Dorsum Termier
 * Dorsum Thera
 * Dorsum Von Cotta
 * Dorsum Zirkel
 * Dorthe Dahl-Jensen
 * Dory Rips
 * Doryphoribius
 * Dose (biochemistry)
 * Dose–response relationship
 * Dostoevskij (crater)
 * Double (lunar crater)
 * Double Agent 73
 * Double Asteroid Redirection Test
 * Double Chooz
 * Double Cluster
 * Double Exposure (1982 film)
 * Double Fourier sphere method
 * Double Helix Nebula
 * Double Star
 * Double Star (satellite)
 * Double bass array
 * Double copy theory
 * Double diversion
 * Double layer (plasma physics)
 * Double mass analysis
 * Double periodic variable
 * Double planet
 * Double star
 * Double summit
 * Double sunset
 * Double, Double, Toil and Trouble
 * Doublet state
 * Doubletime (gene)
 * Doubly ionized oxygen
 * Doubly special relativity
 * Doug Hurley
 * Doug Liman
 * Doug Rich
 * Doug Shane
 * Doug Weston
 * Douglas Gough
 * Douglas H. Wheelock
 * Douglas Hill
 * Douglas Mawson
 * Douglas N. C. Lin
 * Douglas SASSTO
 * Douglas Trumbull
 * Douglas Vakoch
 * Douglass (Martian crater)
 * Douglass (lunar crater)
 * Doumu
 * Doushantuo type preservation
 * Dove (crater)
 * Dove-2
 * Dove-OSCAR 17
 * Dover Demon
 * Dowland (crater)
 * Down by the Hipster
 * Down to a Sunless Sea (Lin Carter novel)
 * Downbelow Station
 * Downcutting
 * Downer (soil)
 * Downhill creep
 * Downrange
 * Downscaling
 * Downtime (Doctor Who)
 * Downwelling
 * Doxefazepam
 * Doxepin
 * Doxylamine
 * Doyle Owl
 * Doyle's Cafe
 * Dr Dee
 * Dr Mu
 * Dr. Black, Mr. Hyde
 * Dr. Creep
 * Dr. Denton
 * Dr. Gangrene
 * Dr. Lamb
 * Dr. Minx
 * Dr. Neil Trivett Global Atmosphere Watch Observatory
 * Dr. Seuss's Sleep Book
 * Dr. Shiver
 * Dr. Shock
 * Dr. Who and the Daleks
 * Draco (constellation)
 * Draco Dwarf
 * Draco Supercluster
 * Draco in Chinese astronomy
 * Draconids
 * Dracs
 * Dracula (Czech musical)
 * Dracula - Swing of Death
 * Dracula 3000
 * Dracula Sucks
 * Dracula vs. Frankenstein
 * Dracula – Entre l'amour et la mort
 * Dracula, the Musical
 * Dracula: A Chamber Musical
 * Dracula: the Musical
 * Dradenau
 * Draft Universe
 * Drag and Atmospheric Neutral Density Explorer
 * Dragon (Dragonriders of Pern)
 * Dragon (remote sensing)
 * Dragon (rocket)
 * Dragon (zodiac)
 * Dragon 2 DragonFly
 * Dragon Ball Z: Bardock – The Father of Goku
 * Dragon C106
 * Dragon C108
 * Dragon Harper
 * Dragon Spacecraft Qualification Unit
 * Dragon Storm (astronomy)
 * Dragon and Slave
 * Dragon's Egg
 * Dragon's Fire
 * Dragon's Kin
 * Dragon's Time
 * Dragon's egg
 * Dragondrums
 * Dragonetti: The Ruthless Contract Killer
 * Dragonfish Nebula
 * Dragonflight
 * Dragonfly (Durbin novel)
 * Dragonfly (spacecraft)
 * Dragonfly 44
 * Dragonfly Telephoto Array
 * Dragonfly: NASA and the Crisis Aboard Mir
 * Dragongirl
 * Dragonheart (novel)
 * Dragonquest
 * Dragonsblood
 * Dragonsdawn
 * Dragonseye
 * Dragonsinger
 * Dragonsong
 * Dragstrip Girl
 * Dragstrip Girl (1994 film)
 * Dragula (song)
 * Dragão do Mar Center of Art and Culture
 * Drainage basin
 * Drainage density
 * Drainage divide
 * Drainage equation
 * Drainage research
 * Drainage system (geomorphology)
 * Drake Planetarium and Science Center
 * Drake equation
 * Drake's Drum
 * Drakengard 3
 * Drakon (novel)
 * Drakonjina špilja
 * Draper (crater)
 * Draper Laboratory
 * Draw sheet
 * Drawdown (hydrology)
 * Drawing down the Moon (ritual)
 * Dray Prescot series
 * Drayton Arms, Earls Court
 * Dreadful Sanctuary
 * Dreadnought (video game)
 * Dream
 * Dream (1944 song)
 * Dream (2008 film)
 * Dream (Dizzee Rascal song)
 * Dream (Suzy and Baekhyun song)
 * Dream (character)
 * Dream Analysis
 * Dream Bank
 * Dream Brother
 * Dream Cave
 * Dream Chaser
 * Dream Corp LLC
 * Dream Cycle
 * Dream Demon
 * Dream Director
 * Dream Hunter Rem
 * Dream Lover
 * Dream Merchant
 * Dream On (Aerosmith song)
 * Dream On (Nazareth song)
 * Dream Police (song)
 * Dream Pool Essays
 * Dream Weaver
 * Dream a Little Dream of Me
 * Dream art
 * Dream diary
 * Dream dictionary
 * Dream guide
 * Dream incubation
 * Dream interpretation
 * Dream sequence
 * Dream sharing
 * Dream speech
 * Dream telepathy
 * Dream vision
 * Dream world (plot device)
 * Dream yoga
 * Dream, Dream
 * DreamUp
 * Dreamcatcher
 * Dreamcatcher (novel)
 * Dreamer (Europe song)
 * Dreamer (Ozzy Osbourne song)
 * Dreamer (Supertramp song)
 * Dreamer Deceiver
 * Dreamin' (Cliff Richard song)
 * Dreamin' (Vanessa Williams song)
 * Dreaming (Australian Aboriginal art)
 * Dreaming (I Dream song)
 * Dreaming of You (Selena song)
 * Dreaming with a Broken Heart
 * Dreamkiller
 * Dreams (1990 film)
 * Dreams (Beck song)
 * Dreams (Diana DeGarmo song)
 * Dreams (Fleetwood Mac song)
 * Dreams (Gabrielle song)
 * Dreams (High and Mighty Color song)
 * Dreams (The Cranberries song)
 * Dreams (The Game song)
 * Dreams (Van Halen song)
 * Dreams (Will Come Alive)
 * Dreams Come True (song)
 * Dreams of Empire
 * Dreams of a Life
 * Dreams to Reality
 * Dreamside
 * Dreamwork
 * Drebach Observatory
 * Drebbel (crater)
 * Dredge-up
 * Dreem (device)
 * Dreem Teem
 * Dreicer field
 * Dreikanter
 * Drekkana
 * Dresden & Johnston
 * Dresden Codex
 * Dresden White Diamond
 * Dreyer (crater)
 * Drift ice
 * Drift waves
 * Drigganita
 * Driller's depth
 * Drilosphere
 * Driscoll (crater)
 * Drive Angry
 * Drive-In Massacre
 * Drive-in theater
 * Drizzle (image processing)
 * Dromore (crater)
 * Dronino meteorite
 * Drop structure
 * Drop tube
 * Dropa stones
 * Dropout (astronomy)
 * Dropping In Microgravity Environment
 * Dropsonde
 * Dropstone
 * Drosophila circadian rhythm
 * Drought
 * Drought Research Initiative
 * Drought refuge
 * Drude (crater)
 * Drug metabolism
 * Druid's Head, Kingston upon Thames
 * Drum (1976 film)
 * Drumian
 * Drumlin
 * Drummer (soil)
 * Druze
 * Dry dam
 * Dry quicksand
 * Dry thunderstorm
 * Dry well
 * Dryden (crater)
 * Drygalski (crater)
 * Drying height
 * Dryland salinity
 * Du Fu (crater)
 * Du Martheray (crater)
 * Dual Air Density Explorer
 * Dual Spires
 * Dual Universe
 * Dual graviton
 * Dual mode propulsion rocket
 * Dual photon
 * Dual resonance model
 * Dual segmented Langmuir probe
 * Dual-Stage 4-Grid
 * Dual-polarization interferometry
 * Duane G. Carey
 * Duane Graveline
 * DubaiSat-1
 * DubaiSat-2
 * Dubakella
 * Duban (crater)
 * Dubyago (crater)
 * Duccio (crater)
 * Duck Dodgers (TV series)
 * Duck Dodgers Starring Daffy Duck
 * Duck Dodgers and the Return of the 24½th Century
 * Duck Dodgers in the 24½th Century
 * Duck Pimples
 * Duck curve
 * DuckTales (video game)
 * DuckTales: Remastered
 * Duckie (group)
 * Duct Soup
 * Ductility (Earth science)
 * Dude, Where's My Car?
 * Dufay (crater)
 * Dufek Intrusion
 * Dugan (crater)
 * Duke Island (lunar mountain)
 * Duke Nukem 3D
 * Duke Nukem II
 * Duke of Cumberland, Fulham
 * Duke of Kent, Ealing
 * Duke of Wellington, Belgravia
 * Duke of Wellington, Bethnal Green
 * Duke of York Inn, Elton
 * Duke of York, Bloomsbury
 * Duke of York, Ganwick Corner
 * Duke of York, Leysters
 * Dulcinea (The Expanse)
 * Dumbbell Galaxy
 * Dumbbell Nebula
 * Dumitru Dediu
 * Dunay radar
 * Dunc's Halloween
 * Duncan Jones
 * Duncan Sommerville
 * Duncan Steel
 * Duncan Waldron
 * Dune
 * Dune (1984 film)
 * Dune (2021 film)
 * Dune (crater)
 * Dune (novel)
 * Dune (video game)
 * Dune 2000
 * Dune II
 * Dune II (MUSH)
 * Dune Messiah
 * Dune prequel series
 * Dune: House Atreides
 * Dune: House Corrino
 * Dune: House Harkonnen
 * Dune: The Battle of Corrin
 * Dune: The Butlerian Jihad
 * Dune: The Machine Crusade
 * Dunedin Astronomical Society
 * Dungal of Bobbio
 * Dungeon of the Endless
 * Dunham Massey Hall sundial
 * Dunham expansion
 * Dunhuang Star Chart
 * Dunlap Institute for Astronomy & Astrophysics
 * Dunsink Observatory
 * Dunthorne (crater)
 * Dunyazad (crater)
 * Dunér (crater)
 * Duoplasmatron
 * Duplex soil
 * Dupuit–Forchheimer assumption
 * Durban Industry Climate Change Partnership Project
 * Durchmusterung
 * Durham Cathedral
 * Durham University Department of Physics
 * Duria Antiquior
 * Duricrust
 * Durio graveolens
 * Durio zibethinus
 * Duripan
 * Durisol
 * Durk Pearson
 * Durrington Walls
 * Dusk
 * Dust 514
 * Dust devil
 * Dust devil tracks
 * Dust explosion
 * Dust lane
 * Dust solution
 * DustPedia
 * Dusty plasma
 * Dutch Open Telescope
 * Dutch elm disease
 * Duvet cover
 * Duília de Mello
 * Dušan Kalmančok
 * Dvorak technique
 * Dvorák (crater)
 * Dwadasama
 * Dwadashi
 * Dwarf elliptical galaxy
 * Dwarf forest
 * Dwarf galaxy
 * Dwarf galaxy problem
 * Dwarf nova
 * Dwarf planet
 * Dwarf slit-faced bat
 * Dwarf spheroidal galaxy
 * Dwarf spiral galaxy
 * Dwarf star
 * Dwayne Hicks
 * Dwell time (GNSS)
 * Dwile flonking
 * Dwingeloo 1
 * Dwingeloo 2
 * Dwingeloo Radio Observatory
 * Dwitiya
 * Dyad (philosophy)
 * Dyadobacter arcticus
 * Dyadobacter crusticola
 * Dyadobacter psychrophilus
 * Dybbuk
 * Dye tracing
 * Dying Earth genre
 * Dying of the Light (1977 novel)
 * Dynameter
 * Dynamic Albedo of Neutrons
 * Dynamic Ionosphere CubeSat Experiment
 * Dynamic light scattering
 * Dynamic method
 * Dynamic recrystallization
 * Dynamic steady state
 * Dynamic topography
 * Dynamical dimensional reduction
 * Dynamical friction
 * Dynamical horizon
 * Dynamical lifetime
 * Dynamical parallax
 * Dynamical time scale
 * Dynamics Explorer
 * Dynamics of the celestial spheres
 * Dynamite Brothers
 * Dynamo theory
 * Dynetics
 * Dynetics HLS
 * Dynomak
 * Dynoro
 * Dyon
 * Dysnomia (deity)
 * Dysnomia (moon)
 * Dyson (crater)
 * Dyson sphere
 * Dyson spheres in popular culture
 * Dyson tree
 * Dyson's eternal intelligence
 * Dyson–Harrop satellite
 * Dyssomnia
 * Dziewulski (crater)
 * Déjà Vu (company)
 * Dépôt de la Guerre
 * Dünyayı Kurtaran Adam
 * Dürer (crater)
 * Düsseldorf-Bilk Observatory
 * E Carinae
 * E Centauri
 * E Nebula
 * E Velorum
 * E-40
 * E-40-07
 * E-ASTROGAM
 * E-CORCE
 * E-Group
 * E-USOC
 * E-Werk (Berlin)
 * E-belt asteroids
 * E-folding
 * E-st@r
 * E-st@r-II
 * E-type asteroid
 * E. Everett Evans
 * E. F. Bleiler
 * E. M. Antoniadi
 * E. Myles Standish
 * E. R. Ward Neale Medal
 * E. Ruth Hedeman
 * E. T. Whittaker
 * E.Deorbit
 * E.S.S. Mega
 * E.T. (song)
 * E.T. Adventure
 * E.T. the Extra-Terrestrial
 * E.V.O.: Search for Eden
 * E.X. Troopers
 * E0102
 * EASE/ACCESS
 * EAVP
 * EBLM J0555-57
 * EC 20058-5234
 * EC50
 * ECAPS
 * ECEF
 * ECHAM
 * ECI Prize
 * ECMWF re-analysis
 * ECOSTRESS
 * ECSS-E-TM-10-25A
 * EChO
 * EDELWEISS
 * EDGE of Existence programme
 * EE Pegasi
 * EEGECS
 * EELV Secondary Payload Adapter
 * EETA 79001
 * EF Eridani
 * EG Andromedae
 * EGS-zs8-1
 * EGSY8p7
 * EIRSAT-1
 * EISCAT
 * EK Trianguli Australis
 * EKS (satellite system)
 * EL Aquilae
 * ELA-1
 * ELA-2
 * ELA-3
 * ELEX
 * ELFIN
 * ELISA (satellite)
 * ELODIE spectrograph
 * EMBRACE (telescope)
 * EMISAT
 * EMMA (accelerator)
 * EN 13537
 * ENGIN-X
 * ENGO
 * EO Aurigae
 * EOS-01
 * EOSDIS
 * EPA list of extremely hazardous substances
 * EPIC 204278916
 * EPIC 204376071
 * EPIC 211945201 b
 * EPOXI
 * EQ Pegasi
 * EQ Virginis
 * EQUULEUS
 * EQUiSat
 * ER=EPR
 * ERA-40
 * ERM Telematics
 * EROS (satellite)
 * EROS A
 * EROS B
 * EROSITA
 * ESA CAVES
 * ESA Centre for Earth Observation
 * ESA Optical Ground Station
 * ESA Scientific Research on the International Space Station
 * ESA Television
 * ESO 137-001
 * ESO 146-5
 * ESO 198-13
 * ESO 235-58
 * ESO 269-57
 * ESO 280-SC06
 * ESO 3.6 m Telescope
 * ESO 306-17
 * ESO 325-G004
 * ESO 439-26
 * ESO 444-46
 * ESO 453-13
 * ESO 453-5
 * ESO 510-G13
 * ESO 540-030
 * ESO 603-G21
 * ESO Hotel
 * ESO Supernova Planetarium & Visitor Centre
 * ESO/ST-ECF Science Archive Facility
 * ESPRESSO
 * ESPRIT
 * ESRB re-rating of The Elder Scrolls IV: Oblivion
 * ESRO 2B
 * ESSA-1
 * ESSA-2
 * ESSA-3
 * ESSA-4
 * ESSA-5
 * ESSA-6
 * ESSA-7
 * ESSA-8
 * ESSA-9
 * ESTAR project
 * ESTCube-1
 * ESTCube-2
 * ESTRACK
 * ET Andromedae
 * ET Virginis
 * ETC Group (eco-justice)
 * ETE (tokamak)
 * ETRSS-1
 * ETS-VII
 * ETS-VIII
 * EU Andromedae
 * EUREF Permanent Network
 * EUROGEO-European Association of Geographers
 * EURONEAR
 * EUROfusion
 * EV Carinae
 * EV Lacertae
 * EVT-201
 * EW Aquarii
 * EX Hydrae
 * EXOSAT
 * EXPORT
 * EXPOSE
 * EXPRES
 * EZ Aquarii
 * EZ Canis Majoris
 * Eacus (god)
 * Eagle (Meridiani Planum crater)
 * Eagle Butte crater
 * Eagle Nebula
 * Eagle Station meteorite
 * Eagle Vision 1 (Commercial Satellite Imagery)
 * Eagleheart (TV series)
 * Earl C. Slipher
 * Earl Kemp
 * Earl Norem
 * Earl of Essex, Manor Park
 * Earle K. Bergey
 * Earle K. Plyler Prize for Molecular Spectroscopy
 * Earle L. Reynolds
 * Early Germanic calendars
 * Early Irish astrology
 * Early Life Stage test
 * Early Palaeozoic Icehouse
 * Early Ruker orogeny
 * Early life of Isaac Newton
 * Earnshaw's theorem
 * Earth
 * Earth & Beyond
 * Earth (Brin novel)
 * Earth (classical element)
 * Earth (wuxing)
 * Earth 2 (TV series)
 * Earth Afire
 * Earth Awakens
 * Earth Escape Explorer
 * Earth Girls Are Easy
 * Earth Impact Database
 * Earth Interactions
 * Earth Learning Idea
 * Earth Observation Center
 * Earth Observing System
 * Earth Observing-1
 * Earth Observing-3
 * Earth Prime
 * Earth Radiation Budget Satellite
 * Earth Science Education Unit
 * Earth Science Week
 * Earth Similarity Index
 * Earth Simulator
 * Earth Spacedock
 * Earth Story
 * Earth Surface Dynamics
 * Earth Surface Processes and Landforms
 * Earth System Dynamics
 * Earth System Governance Project
 * Earth System Modeling Framework
 * Earth System Research Laboratory
 * Earth System Science Partnership
 * Earth X
 * Earth analog
 * Earth and Planetary Science Letters
 * Earth ellipsoid
 * Earth embassy
 * Earth in culture
 * Earth in science fiction
 * Earth inductor compass
 * Earth mass
 * Earth mysteries
 * Earth observation
 * Earth observation satellite
 * Earth observation satellites transmission frequencies
 * Earth orbit rendezvous
 * Earth orientation parameters
 * Earth phase
 * Earth physical characteristics tables
 * Earth pigment
 * Earth radius
 * Earth religion
 * Earth science
 * Earth sciences graphics software
 * Earth structure
 * Earth symbol
 * Earth system governance
 * Earth system science
 * Earth systems engineering and management
 * Earth systems model of intermediate complexity
 * Earth tide
 * Earth to Echo
 * Earth trojan
 * Earth's circumference
 * Earth's critical zone
 * Earth's crust
 * Earth's crustal evolution
 * Earth's energy budget
 * Earth's inner core
 * Earth's internal heat budget
 * Earth's mantle
 * Earth's orbit
 * Earth's outer core
 * Earth's rotation
 * Earth's shadow
 * Earth, Moon, and Planets
 * Earth, Planets and Space
 * Earth-616
 * Earth-One
 * Earth-Science Reviews
 * Earth-Three
 * Earth-Two
 * Earth-centered inertial
 * Earth-grazing fireball
 * Earth-grazing meteoroid of 13 October 1990
 * Earth-maker myth
 * Earth: The Power of the Planet
 * EarthArXiv
 * EarthCARE
 * EarthNow
 * EarthSat
 * Earthcore
 * Earthflow
 * Earthjet
 * Earthlight
 * Earthlight (astronomy)
 * Earthlight (crater)
 * Earthlight (video game)
 * Earthling
 * Earthlock
 * Earthly Branches
 * Earthquake
 * Earthquake Research Institute, University of Tokyo
 * Earthrise
 * Earthrise (1990 video game)
 * Earthscope
 * Earthsea
 * Earthworm
 * Earth–Moon–Earth communication
 * Earth–ionosphere waveguide
 * East Asia Climate Partnership
 * East Brazilian pygmy owl
 * East Greenland Current
 * East Greenland Ice-Core Project
 * East Kentucky Science Center
 * East Wind (train)
 * East-Asian Planet Search Network
 * Eastbrook, Dagenham
 * Eastern Air Lines Flight 212
 * Eastern Analytical Symposium
 * Eastern Anatolia Observatory
 * Eastern Asia (WGSRPD)
 * Eastern Continental Divide
 * Eastern Ghats
 * Eastern Hemisphere
 * Eastern Highlands
 * Eastern Himalaya
 * Eastern bent-wing bat
 * Eastern forest–boreal transition
 * Easting and northing
 * Eastman (crater)
 * Easy Rider
 * Easy Wheels
 * Eat My Dust!
 * Ebb Cade
 * Eben Jenks Loomis
 * Ebenezer Cunningham
 * Eberhard August Wilhelm von Zimmermann
 * Eberhard Grün
 * Eberhard Köllner
 * Eberhard Rees
 * Eberhart Jensen
 * Eberswalde (crater)
 * Ebola
 * Ebola Syndrome
 * Ebolavirus
 * Ebony, Ivory & Jade
 * Ebullism
 * EcAMSat
 * Eccentric Jupiter
 * Eccentric anomaly
 * Eccentricity vector
 * Ecco the Dolphin (video game)
 * Echecrates of Phlius
 * Echegaray (crater)
 * Echelle grating
 * Echelon (1987 video game)
 * Echelon cracks
 * Echiniscus testudo
 * Echinopsis eyriesii
 * Echinopsis pachanoi
 * Echo Night: Beyond
 * EchoStar
 * EchoStar I
 * EchoStar II
 * EchoStar III
 * EchoStar IV
 * EchoStar Mobile
 * EchoStar V
 * EchoStar VI
 * EchoStar VII
 * EchoStar VIII
 * EchoStar X
 * EchoStar XI
 * EchoStar XIV
 * EchoStar XV
 * EchoStar XVI
 * EchoStar XVII
 * EchoStar XXI
 * Echoes (Pink Floyd song)
 * Echoes of Apollo
 * Echopraxia (novel)
 * Echostage
 * Echus Chasma
 * Echus Montes
 * Eckert (crater)
 * Eckfelder Maar
 * Eclipse
 * Eclipse (Pink Floyd song)
 * Eclipse Phase
 * Eclipse cycle
 * Eclipse of Thales
 * Eclipse season
 * Eclipses: Astronomically and Astrologically Considered and Explained
 * Ecliptic
 * Ecliptic Plane Input Catalog
 * Ecliptic coordinate system
 * Eco.mont
 * EcoHealth Alliance
 * EcoTarium
 * Ecohydrology
 * Ecological anthropology
 * Ecological classification
 * Ecological death
 * Ecological design
 * Ecological economics
 * Ecological engineering
 * Ecological facilitation
 * Ecological forecasting
 * Ecological indicator
 * Ecological light pollution
 * Ecological niche
 * Ecological regions of Quebec
 * Ecological release
 * Economic Geography (journal)
 * Economic Geology (journal)
 * Economic and Environmental Geology
 * Economics of extraterrestrial resource extraction
 * Ecopath
 * Ecophagy
 * Ecoprovince
 * Ecopsychology
 * Ecoregion
 * Ecosharing
 * Ecosystem
 * Ecosystem diversity
 * Ecosystem ecology
 * Ecosystem engineer
 * Ecosystem model
 * Ecosystem service
 * Ecosystem valuation
 * Ecosystem-based management
 * Ecotechnology
 * Ecotone
 * Ecotoxicity
 * Ecoweek
 * Ecphantus the Pythagorean
 * Ectomycorrhiza
 * Ecuadorian Civilian Space Agency
 * Ecumene
 * Ed & Red's Night Party
 * Ed Baird
 * Ed Emshwiller
 * Ed Kenney
 * Ed Krupp
 * Ed Lu
 * Ed Mirvish Theatre
 * Ed Nather
 * Ed Straker
 * Ed White (astronaut)
 * Ed Wood
 * Ed van den Heuvel
 * EdGCM
 * Edaphobacter aggregans
 * Edaphobacter modestus
 * Edaphology
 * Edarem
 * Edd Cartier
 * Eddie (crater)
 * Eddie Gordon
 * Eddie Jones (artist)
 * Eddie Nash
 * Eddington (crater)
 * Eddington (spacecraft)
 * Eddington Medal
 * Eddington experiment
 * Eddington luminosity
 * Eddington number
 * Eden (Lem novel)
 * Eden Lake
 * Eden Patera
 * Edgar Bright Wilson
 * Edgar Frisby
 * Edgar G. Ulmer
 * Edgar Langeveldt
 * Edgar Mitchell
 * Edgar Tillyer
 * Edgar W. Woolard
 * Edgar Wilson Award
 * Edgar Wright
 * Edgardo M. Latrubesse
 * Edge effects
 * Edge wave
 * Edge-localized mode
 * Edgeworth David
 * Edinburgh-Cape Blue Object Survey
 * Edison (crater)
 * Edison Demonstration of Smallsat Networks
 * Edison Pettit
 * Edison's Conquest of Mars
 * Edith Alice Müller
 * Edith Fanta
 * Edith Farkas
 * Edith Klemperer
 * Edmond Bonan
 * Edmond Halley
 * Edmond Herbert Grove-Hills
 * Edmund Bertschinger
 * Edmund Neville Nevill
 * Edmund Scientific Corporation
 * Edmund Weiss
 * Edmund Wragge
 * Edoardo Amaldi
 * Edoardo Amaldi ATV
 * Edscottite
 * EduSAT
 * Eduard Brückner
 * Eduard Heis
 * Eduard Mahler
 * Eduard Meine van Zinderen-Bakker
 * Eduard Richter
 * Eduard Schönfeld
 * Educational Launch of Nanosatellites
 * Educator Astronaut Project
 * Eduction (geology)
 * Edvard Hugo von Zeipel
 * Edward A. Halbach
 * Edward Adrian Wilson
 * Edward Anders
 * Edward Belbruno
 * Edward Bernard
 * Edward Bernds
 * Edward Brinton
 * Edward Bulwer-Lytton
 * Edward C. Stone
 * Edward C. T. Chao
 * Edward C. Welsh
 * Edward Charles Howard
 * Edward Charles Pickering
 * Edward Colborne Baber
 * Edward D. Swift
 * Edward Daniel Johnson
 * Edward E. Kramer
 * Edward Emerson Barnard
 * Edward F. Crawley
 * Edward Fitzherbert (British Army officer)
 * Edward Fomalont
 * Edward Frederick Robert Bage
 * Edward Gibson
 * Edward Guinan
 * Edward Israel
 * Edward J. Ruppelt
 * Edward J. Weiler
 * Edward James (historian)
 * Edward John White
 * Edward Joseph Lowe
 * Edward Kelley
 * Edward Kolb
 * Edward L. Beach Jr.
 * Edward L. Cahn
 * Edward L. Ferman
 * Edward L. G. Bowell
 * Edward L. Wright
 * Edward Leamington Nichols
 * Edward Linfoot
 * Edward M. Sion
 * Edward Makuka Nkoloso
 * Edward Mercer
 * Edward Mordrake (American Horror Story)
 * Edward Mounier Boxer
 * Edward Nairne
 * Edward Nelson (marine biologist)
 * Edward Pigot
 * Edward Richardson (priest)
 * Edward Riddle
 * Edward Robert Festing
 * Edward Robert Harrison
 * Edward Rosen
 * Edward S. Holden
 * Edward Sabine
 * Edward Scarlett
 * Edward Skinner King
 * Edward Spiegel
 * Edward Stewart Kennedy
 * Edward Troughton
 * Edwards Air Force Base
 * Edwin Bergin
 * Edwin Brant Frost
 * Edwin Charles Steinbrecher
 * Edwin Dunkin
 * Edwin Ernest Salpeter
 * Edwin Foster Coddington
 * Edwin Francis Carpenter
 * Edwin Holmes (astronomer)
 * Edwin Hubble
 * Edwin Lincoln Moseley
 * Edwin P. Martz
 * Edwin Raub
 * Edwin Silverman
 * Eedle and Meyers
 * Eelco Alta
 * Eerie, Indiana: The Other Dimension
 * Eez-eh
 * Effect of Sun angle on climate
 * Effect of spaceflight on the human body
 * Effective evolutionary time
 * Effective one-body formalism
 * Effective porosity
 * Effective radius
 * Effective temperature
 * Effects of Planet Nine on trans-Neptunian objects
 * Effects of climate change on oceans
 * Effects of overtime
 * Effects of sleep deprivation in space
 * Effects of sleep deprivation on cognitive performance
 * Effects range low and effects range median
 * Effelsberg 100-m Radio Telescope
 * Effluent
 * Effusion
 * Efi Foufoula-Georgiou
 * Egbert Adriaan Kreiken
 * Ege University Observatory
 * Egede (crater)
 * Egevadluq Ragee
 * Egg London
 * Egg Nebula
 * Eggatron
 * Egonu (crater)
 * Eguchi–Hanson space
 * Egypt Mons
 * EgyptSat 1
 * EgyptSat 2
 * EgyptSat-A
 * Egyptian Theatre
 * Egyptian Theatre (Coos Bay, Oregon)
 * Egyptian Theatre (DeKalb, Illinois)
 * Egyptian Theatre (Delta, Colorado)
 * Egyptian astronomy
 * Egyptian calendar
 * Egyptian chronology
 * Egyptian sun temple
 * Ehlers group
 * Ehrlich (crater)
 * Eichstadt (crater)
 * Eidouranion
 * Eigenvector slew
 * Eight Bells, Fulham
 * Eight Worlds
 * Eighth Cambridge Survey
 * Eiji Tsuburaya
 * Eijkman (crater)
 * Eilat stone
 * Eileen Collins
 * Eileen Gunn
 * Eimmart (crater)
 * Einar Tandberg-Hanssen
 * Einasto profile
 * Einhard
 * Einhänder
 * Einstein (crater)
 * Einstein Cross
 * Einstein Gravity in a Nutshell
 * Einstein Observatory
 * Einstein Telescope
 * Einstein Tower
 * Einstein aether theory
 * Einstein coefficients
 * Einstein field equations
 * Einstein protocol
 * Einstein radius
 * Einstein ring
 * Einstein vs. Stephen Hawking
 * Einstein's Bridge (novel)
 * Einstein's Dreams
 * Einstein's Unfinished Symphony
 * Einstein's thought experiments
 * Einstein's unsuccessful investigations
 * Einstein@Home
 * Einstein–Cartan theory
 * Einstein–Hilbert action
 * Einstein–Infeld–Hoffmann equations
 * Einstein–Rosen metric
 * Einstein–de Sitter universe
 * Einthoven (crater)
 * Eire Pub
 * Eirene (moon)
 * Eirik Newth
 * Eise Eisinga
 * Eise Eisinga Planetarium
 * Eisenhorn
 * Eisenhorn: Xenos
 * Eisenhower dollar
 * Eitoku (crater)
 * Ejecta
 * Ejecta blanket
 * Ejler Jakobsson
 * Ejnar Hertzsprung
 * Ejriksson (Martian crater)
 * Ekadashi
 * Eki (goddess)
 * Ekman layer
 * Ekman spiral
 * Ekman transport
 * Ekman velocity
 * Ekpyrotic universe
 * Ekran
 * Ekspress (satellite bus)
 * Ekspress A2
 * Ekspress A3
 * Ekspress AM22
 * Ekspress AM4
 * Ekspress AM4R
 * Ekspress AM5
 * Ekspress AM6
 * Ekspress AM7
 * Ekspress AM8
 * Ekspress AT1
 * Ekspress AT2
 * Ekspress MD1
 * Ekspress MD2
 * Ekspress-AMU1
 * El (crater)
 * El Arenosillo
 * El Boludo (meteorite)
 * El Capitan (Mars)
 * El Capitan (train)
 * El Capitan Theatre
 * El Castillo, Chichen Itza
 * El Gordo (galaxy cluster)
 * El Hierro
 * El Hierro Launch Centre
 * El Tiro (meteorite)
 * El Vino
 * El diputado
 * El sacerdote
 * El-P
 * Elagabalus (deity)
 * Elaine Ingham
 * Elaine Sadler
 * Elaine Stritch
 * Elaine Walker (composer)
 * Elara (moon)
 * Elastic Heart
 * Elbo Room
 * Elbogen (meteorite)
 * Elbow (lunar crater)
 * Elbow crater
 * Elder Thing
 * Elder race
 * Eldridge M. Moores
 * Eleanor F. Helin
 * Eleanor Honnywill
 * Eleanor Rieffel
 * Eleazar of Worms
 * Electional astrology
 * Electra (radio)
 * Electra (satellite)
 * Electra (star)
 * Electric arc
 * Electric arc furnace
 * Electric discharge
 * Electric discharge in gases
 * Electric sail
 * Electric spark
 * Electric-pump-fed engine
 * Electrical aerosol spectrometer
 * Electrical ballast
 * Electrical breakdown
 * Electrical discharge machining
 * Electrical disruptions caused by squirrels
 * Electrical system of the International Space Station
 * Electrical treeing
 * Electrically detected magnetic resonance
 * Electrically powered spacecraft propulsion
 * Electrically scanning microwave radiometer
 * Electris deposits
 * Electro-optical MASINT
 * Electrochromism
 * Electrodeless lamp
 * Electrodeless plasma excitation
 * Electrodeless plasma thruster
 * Electrodynamic tether
 * Electrogas welding
 * Electrogravitics
 * Electrojet
 * Electrokinetic remediation
 * Electromagnetic absorption by water
 * Electromagnetic electron wave
 * Electromagnetic propulsion
 * Electromechanical disintegration
 * Electron (rocket)
 * Electron Microscopy Center
 * Electron avalanche
 * Electron backscatter diffraction
 * Electron beam ion trap
 * Electron cyclotron resonance
 * Electron degeneracy pressure
 * Electron diffraction
 * Electron energy loss spectroscopy
 * Electron interferometer
 * Electron magnetic circular dichroism
 * Electron nuclear double resonance
 * Electron orbital imaging
 * Electron paramagnetic resonance
 * Electron phenomenological spectroscopy
 * Electron spectrometer
 * Electron spectroscopy
 * Electron spiral toroid
 * Electron wake
 * Electronic Cultural Atlas Initiative
 * Electronic centralised aircraft monitor
 * Electronic flight bag
 * Electronic flight instrument system
 * Electronic speckle pattern interferometry
 * Electrosexual
 * Electroslag welding
 * Electrostatic discharge
 * Electrostatic ion cyclotron wave
 * Electrostatic lens
 * Electrostatic levitation
 * Electrothermal instability
 * Electrotroph
 * Electrovacuum solution
 * Electroweak epoch
 * Electroweak star
 * Electrowerkz
 * Elegy (The Twilight Zone)
 * Elektro-L No.1
 * Elektro-L No.2
 * Elektron (satellite program)
 * Elektro–L
 * Element Girl
 * Elemental
 * Elementary School Musical (The Simpsons)
 * Elements (journal)
 * Elena Aprile
 * Elena Kazimirtchak-Polonskaïa
 * Elena Ramírez Parra
 * Elena V. Pitjeva
 * Eleonora Troja
 * Elephant trunk (astronomy)
 * Elephant's Trunk Nebula
 * Eles, Tunisia
 * Elevated photography
 * Elevation
 * Elevational diversity gradient
 * Elevator:2010
 * Eleventh planet
 * Elfie Hopkins
 * Elger (crater)
 * Elgin and Winter Garden Theatres
 * Elgin, Ladbroke Grove
 * Elginfield Observatory
 * Elia Millosevich
 * Elias 2-27
 * Elijah Mizrachi
 * Eline Tolstoy
 * Elinor Busby
 * Elinor Mavor
 * Elis Strömgren
 * Elisa Quintana
 * Elisabeth Hevelius
 * Elisabeth Isaksson
 * Elisabeth von Matt
 * Elisabetta Pierazzo
 * Elise Matthesen
 * Eliss
 * Elite (video game)
 * Elite Dangerous
 * Elivagar Flumina
 * Elizabeth Alexander (scientist)
 * Elizabeth Anne Hull
 * Elizabeth Beckley
 * Elizabeth Brown (astronomer)
 * Elizabeth Colbert Busch
 * Elizabeth Hand
 * Elizabeth J. Tasker
 * Elizabeth Johnson (pamphleteer)
 * Elizabeth Klarer
 * Elizabeth Roemer
 * Elizabeth Truswell
 * Elizabeth Turtle
 * Elizabeth Weir (Stargate)
 * Elizaveta Karamihailova
 * Ellen Asher
 * Ellen Datlow
 * Ellen Gould Zweibel
 * Ellen Greene
 * Ellen Harding Baker
 * Ellen Mosley-Thompson
 * Ellen Ochoa
 * Ellen S. Baker
 * Ellen Stofan
 * Ellen Thomas (scientist)
 * Ellerman (crater)
 * Ellerman bombs
 * Ellicott's Stone
 * Ellington (crater)
 * Elliot See
 * Ellipsometry
 * Elliptic flow
 * Elliptic orbit
 * Elliptical galaxy
 * Elliptical polarization
 * Ellis R. Lippincott Award
 * Ellis drainhole
 * Ellis wormhole
 * Ellison (crater)
 * Ellison Onizuka
 * Elmer (crater)
 * Elmer Balaban
 * Elmo Says Boo!
 * Elon Musk
 * Elon Musk's Tesla Roadster
 * Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future
 * Elongation (astronomy)
 * Elope, Inc.
 * Elqui-Limarí Batholith
 * Elsa G. Vilmundardóttir
 * Elsa van Dien
 * Elsevier Biobase
 * Elsie Cohen
 * Elsie Sunderland
 * Elstree Studios
 * Elstree Studios (Shenley Road)
 * Eltanin impact
 * Elton's quadrant
 * Eluvium
 * Elves (film)
 * Elvey (crater)
 * Elvira Presents Haunted Hits
 * Elvira Presents Monster Hits
 * Elvira's Halloween Special
 * Elvis Tsui
 * Elysium (volcanic province)
 * Elysium Fire
 * Elysium Fossae
 * Elysium Mons
 * Elysium Space
 * Elysium quadrangle
 * Eman Ghoneim
 * Emanuel von der Pahlen
 * Emanuelle Around the World
 * Emanuelle and the Last Cannibals
 * Emanuelle and the White Slave Trade
 * Emanuelle in America
 * Emanuelle in Bangkok
 * Emballonuroidea
 * Embedded cluster
 * Embedded lens
 * Emblem of Algeria
 * Emblem of Angola
 * Emblem of Djibouti
 * Emblem of Ethiopia
 * Emblem of Guinea-Bissau
 * Emblem of Hong Kong
 * Emblem of Italy
 * Emblem of Kosovo
 * Emblem of Kyrgyzstan
 * Emblem of Macau
 * Emblem of Maldives
 * Emblem of Mozambique
 * Emblem of North Korea
 * Emblem of Sri Lanka
 * Emblem of Tibet
 * Emblem of Turkmenistan
 * Emblem of Uzbekistan
 * Emblem of Vietnam
 * Emblem of Yugoslavia
 * Emblem of the Abkhaz Autonomous Soviet Socialist Republic
 * Emblem of the Adjar Autonomous Soviet Socialist Republic
 * Emblem of the Armenian Soviet Socialist Republic
 * Emblem of the Azerbaijan Soviet Socialist Republic
 * Emblem of the Bashkir Autonomous Soviet Socialist Republic
 * Emblem of the Byelorussian Soviet Socialist Republic
 * Emblem of the Checheno-Ingush Autonomous Soviet Socialist Republic
 * Emblem of the Chuvash Autonomous Soviet Socialist Republic
 * Emblem of the Crimean Autonomous Soviet Socialist Republic
 * Emblem of the Dagestan Autonomous Soviet Socialist Republic
 * Emblem of the Estonian Soviet Socialist Republic
 * Emblem of the Georgian Soviet Socialist Republic
 * Emblem of the Kabardino-Balkarian Autonomous Soviet Socialist Republic
 * Emblem of the Kalmyk Autonomous Soviet Socialist Republic
 * Emblem of the Karelian Autonomous Soviet Socialist Republic
 * Emblem of the Karelo-Finnish Soviet Socialist Republic
 * Emblem of the Kazakh Soviet Socialist Republic
 * Emblem of the Kirghiz Soviet Socialist Republic
 * Emblem of the Komi Autonomous Soviet Socialist Republic
 * Emblem of the Latvian Soviet Socialist Republic
 * Emblem of the Lithuanian Soviet Socialist Republic
 * Emblem of the Mari Autonomous Soviet Socialist Republic
 * Emblem of the Moldavian Autonomous Soviet Socialist Republic
 * Emblem of the Moldavian Soviet Socialist Republic
 * Emblem of the Mordovian Autonomous Soviet Socialist Republic
 * Emblem of the Nakhchivan Autonomous Soviet Socialist Republic
 * Emblem of the North Ossetian Autonomous Soviet Socialist Republic
 * Emblem of the People's Republic of Bulgaria
 * Emblem of the Russian Soviet Federative Socialist Republic
 * Emblem of the Socialist Republic of Romania
 * Emblem of the Tajik Soviet Socialist Republic
 * Emblem of the Tatar Autonomous Soviet Socialist Republic
 * Emblem of the Transcaucasian Socialist Federative Soviet Republic
 * Emblem of the Turkestan Autonomous Soviet Socialist Republic
 * Emblem of the Turkmen Soviet Socialist Republic
 * Emblem of the Tuvan Autonomous Soviet Socialist Republic
 * Emblem of the Udmurt Autonomous Soviet Socialist Republic
 * Emblem of the Ukrainian Soviet Socialist Republic
 * Emblem of the Uzbek Soviet Socialist Republic
 * Emblem of the Volga German Autonomous Soviet Socialist Republic
 * Emblem of the Yakut Autonomous Soviet Socialist Republic
 * Emblems of the Soviet Republics
 * Embodied energy
 * Embodied imagination
 * Embrujada
 * Embryo (song)
 * Embryo space colonization
 * Embutramide
 * Emden (crater)
 * Emden–Chandrasekhar equation
 * Emek (movie theater)
 * Emerald Theatre
 * Emeraude (rocket)
 * Emergency Detection System
 * Emergent coastline
 * Emergent gravity
 * Emil Cohen
 * Emil Ernst
 * Emil Petaja
 * Emil Racoviță
 * Emil Truog
 * Emile Plantamour
 * Emilio Santos Corchero
 * Emilios T. Harlaftis
 * Emily (film)
 * Emily Lakdawalla
 * Emily Levesque
 * Eminent Ecologist Award
 * Eminescu (crater)
 * Eminescu quadrangle
 * Emios
 * Emirates Lunar Mission
 * Emirates Mars Mission
 * Emirates Soil Museum
 * Emissary (Star Trek: Deep Space Nine)
 * Emission intensity
 * Emission nebula
 * Emission spectrum
 * Emission-line star
 * Emissions budget
 * Emissions target
 * Emissivity
 * Emma Beckwith
 * Emma Bunce
 * Emma Chapman
 * Emma Dean (crater)
 * Emma Rush
 * Emmanuel Hugot
 * Emmanuel Mignot
 * Emmanuelle (film)
 * Emmett Leith
 * Emohawk: Polymorph II
 * Emory (crater)
 * Emperor: Battle for Dune
 * Empire (Kasabian song)
 * Empire Builder
 * Empire Star
 * Empire from the Ashes
 * Empire!
 * Empire, Leicester Square
 * Empires of Eve
 * Employee Transfer
 * Empress Theatre (Montreal)
 * Empress of Mars
 * Emptiness (Chinese constellation)
 * Empusa
 * Empyrean
 * En echelon veins
 * EnMAP
 * EnVision (spacecraft)
 * Enallylpropymal
 * Encampment (Chinese constellation)
 * Enceladus
 * Enceladus Explorer
 * Enceladus Icy Jet Analyzer
 * Enceladus Life Finder
 * Enceladus Life Signatures and Habitability
 * Enchanted loom
 * Enchantress from the Stars
 * Encino Man
 * Encke (crater)
 * Enclave (geology)
 * Encore Las Vegas
 * Encounter at Farpoint
 * Encounter in the Dawn
 * Encounter with Tiber
 * Encyclopedia Astronautica
 * Encyclopedia Galactica
 * Encyclopedia of the Brethren of Purity
 * Encyclopedic Dictionary of Astronomy
 * End of the World (1931 film)
 * Endeavour (crater)
 * Ender's Game (comics)
 * Ender's Game (film)
 * Ender's Game (novel series)
 * Endgame (Star Trek: Voyager)
 * Endless (comics)
 * Endless Bummer (film)
 * Endolith
 * Endor (Star Wars)
 * Endorheic basin
 * Endorheic lake
 * Endosymbiont
 * Endothermic gas
 * Endowment (Mormonism)
 * Endurance (crater)
 * Endurance: A Year in Space, a Lifetime of Discovery
 * Enduring Quests and Daring Visions
 * Endy Sleep
 * Endymion (crater)
 * Enectalí Figueroa-Feliciano
 * Enemy Mine (film)
 * Enemy Mine (novella)
 * Enemy Territory: Quake Wars
 * EnerWorks
 * Energetic Gamma Ray Experiment Telescope
 * Energetic neutral atom
 * Energia Lunar Expedition
 * Energia-100
 * Energy & Environmental Science
 * Energy Research Institute of the Russian Academy of Sciences
 * Energy Systems Language
 * Energy and Climate Intelligence Unit
 * Energy being
 * Energy condition
 * Energy economics
 * Energy flow (ecology)
 * Energy level
 * Energy policy
 * Energy-dispersive X-ray diffraction
 * Energy-dispersive X-ray spectroscopy
 * Engel'gardt (crater)
 * Engelbert Schücking
 * Engelier
 * EngenderHealth
 * Enggano scops owl
 * Engineering Geology (journal)
 * Engineering controls
 * Engraved Hourglass Nebula
 * Enhanced GPS
 * Enhanced avionics system
 * Enhanced flight vision system
 * Enhanced geothermal system
 * Enhanced vegetation index
 * Enheduanna (crater)
 * Enhydro agate
 * Enipeus Vallis
 * Enki
 * Enki Bilal
 * Enki Catena
 * Enlargement of the European Space Agency
 * Enlighten Thy Daughter
 * Enlightenment (Doctor Who)
 * Enlil
 * Enlil and Ninlil
 * Ennead
 * Enneagram (geometry)
 * Enoch Fitch Burr
 * Enormous Toroidal Plasma Device
 * Enos (chimpanzee)
 * Enriched Xenon Observatory
 * Enrico Costa (physicist)
 * Enrico Dalgas
 * Enrico Fermi
 * Enrico Palermo
 * Enrique Loedel Palumbo
 * Enrique of Malacca
 * Enschede fireworks disaster
 * Ensemble de Lancement Soyouz
 * Ensemble forecasting
 * Ensisheim meteorite
 * Ensor (crater)
 * Entangled (Red Dwarf)
 * Enter Sandman
 * Enterprise (Via Rail train)
 * Enterprise Rupes
 * Enthusiasm
 * Entisol
 * Entomopathogenic nematode
 * Entomotoxicology
 * Entrainment (chronobiology)
 * Entrainment (physical geography)
 * Entrapta
 * Entropia Universe
 * Entropic gravity
 * Entropy (astrophysics)
 * Entropy (video game)
 * Enuma Anu Enlil
 * Envelope (waves)
 * Envenomation
 * Envihab
 * Environment Agency Wales
 * Environment International
 * Environmental Assessment Institute
 * Environmental Chemistry (journal)
 * Environmental Communication (journal)
 * Environmental Development
 * Environmental Earth Sciences
 * Environmental Effects of Illicit Drug Production
 * Environmental Fluid Mechanics
 * Environmental Modeling Center
 * Environmental Modelling & Software
 * Environmental Pollution (journal)
 * Environmental Quality Incentives Program
 * Environmental Research
 * Environmental Research Institute of Michigan
 * Environmental Research Letters
 * Environmental Science & Technology
 * Environmental Science & Technology Letters
 * Environmental Science Services Administration
 * Environmental Science: Processes & Impacts
 * Environmental Sciences Europe
 * Environmental Toxicology and Chemistry
 * Environmental Vulnerability Index
 * Environmental analysis
 * Environmental anthropology
 * Environmental archaeology
 * Environmental biotechnology
 * Environmental chemistry
 * Environmental communication
 * Environmental consulting
 * Environmental data rescue
 * Environmental economics
 * Environmental education
 * Environmental effects of laundry wastewater
 * Environmental engineering
 * Environmental engineering science
 * Environmental ethics
 * Environmental geology
 * Environmental hazard
 * Environmental health
 * Environmental health ethics
 * Environmental hermeneutics
 * Environmental history
 * Environmental history of Latin America
 * Environmental impact of pharmaceuticals and personal care products
 * Environmental impact of silver nanoparticles
 * Environmental impact statement
 * Environmental informatics
 * Environmental law
 * Environmental modelling
 * Environmental personhood
 * Environmental policy
 * Environmental politics
 * Environmental psychology
 * Environmental resource management
 * Environmental science
 * Environmental sensitivity
 * Environmental social science
 * Environmental soil science
 * Environmental stewardship
 * Environmental surveying
 * Environmental vegetarianism
 * Environmental virtue ethics
 * Envisat
 * Enwonwu (crater)
 * Enzmann starship
 * Enūma Eliš
 * Eocyte hypothesis
 * Eohypsibiidae
 * Eon (magazine)
 * Eonothem
 * Eos
 * Eos Chasma
 * Eostrix
 * Epaminondas Stassinopoulos
 * Epcard
 * Epcot Forever
 * Epeirogenic movement
 * Ephemeride Lunaire Parisienne
 * Ephemeris
 * Ephemeris day
 * Ephemeris time
 * Ephialtes (illness)
 * Ephwurd
 * Epiales
 * Epic (video game)
 * Epic of evolution
 * Epicharmus of Kos
 * Epicurus
 * Epicyclic frequency
 * Epideme
 * Epidemic dropsy
 * Epidemiology
 * Epidemiology (Community)
 * Epidemiology data for low-linear energy transfer radiation
 * Epidendrum nocturnum
 * Epigenes (crater)
 * Epigenes of Byzantium
 * Epigeus (crater)
 * Epimenides
 * Epimenides (crater)
 * Epimetheus (moon)
 * Epip
 * Epiphreatic zone
 * Epiphyllum
 * Epiphyllum oxypetalum
 * Epiphyllum pumilum
 * Episodes (journal)
 * Epistles of Wisdom
 * Epitome Astronomiae Copernicanae
 * Eplivanserin
 * Epoch (astronomy)
 * Epoch (geology)
 * Epoch (video game)
 * Epomophorinae
 * Epping Forest Country Club
 * Epsilon (film)
 * Epsilon (rocket)
 * Epsilon Andromedae
 * Epsilon Antliae
 * Epsilon Apodis
 * Epsilon Aquarii
 * Epsilon Aquilae
 * Epsilon Arae
 * Epsilon Arietis
 * Epsilon Aurigae
 * Epsilon Boötis
 * Epsilon Cancri
 * Epsilon Canis Majoris
 * Epsilon Canis Minoris
 * Epsilon Capricorni
 * Epsilon Carinae
 * Epsilon Cassiopeiae
 * Epsilon Centauri
 * Epsilon Cephei
 * Epsilon Ceti
 * Epsilon Chamaeleontis
 * Epsilon Circini
 * Epsilon Columbae
 * Epsilon Coronae Australis
 * Epsilon Coronae Borealis
 * Epsilon Corvi
 * Epsilon Crateris
 * Epsilon Cygni
 * Epsilon Delphini
 * Epsilon Doradus
 * Epsilon Draconis
 * Epsilon Equulei
 * Epsilon Eridani
 * Epsilon Eridani b
 * Epsilon Eridani in fiction
 * Epsilon Fornacis
 * Epsilon Geminorum
 * Epsilon Gruis
 * Epsilon Herculis
 * Epsilon Hydrae
 * Epsilon Hydri
 * Epsilon Indi
 * Epsilon Leonis
 * Epsilon Leporis
 * Epsilon Librae
 * Epsilon Lupi
 * Epsilon Lyrae
 * Epsilon Mensae
 * Epsilon Microscopii
 * Epsilon Monocerotis
 * Epsilon Muscae
 * Epsilon Normae
 * Epsilon Octantis
 * Epsilon Ophiuchi
 * Epsilon Pavonis
 * Epsilon Pegasi
 * Epsilon Persei
 * Epsilon Phoenicis
 * Epsilon Piscis Austrini
 * Epsilon Piscium
 * Epsilon Pyxidis
 * Epsilon Reticuli
 * Epsilon Reticuli b
 * Epsilon Sagittae
 * Epsilon Sagittarii
 * Epsilon Scorpii
 * Epsilon Sculptoris
 * Epsilon Scuti
 * Epsilon Serpentis
 * Epsilon Sextantis
 * Epsilon Tauri
 * Epsilon Tauri b
 * Epsilon Team
 * Epsilon Telescopii
 * Epsilon Trianguli
 * Epsilon Trianguli Australis
 * Epsilon Tucanae
 * Epsilon Ursae Majoris
 * Epsilon Ursae Minoris
 * Epsilon Virginis
 * Epsilon Volantis
 * Epsilon1 Arae
 * Epsilon2 Arae
 * Eptesicini
 * Epworth Sleepiness Scale
 * Equal Rites
 * Equal house system (Hindu astrology)
 * Equal-Armed Cross
 * Equant
 * Equation of state (cosmology)
 * Equation of the center
 * Equation of time
 * Equations for a falling body
 * Equator
 * Equatorial Atlantic Magmatic Province
 * Equatorial Rossby wave
 * Equatorial Vortex Experiment
 * Equatorial ascendant
 * Equatorial bulge
 * Equatorial coordinate system
 * Equatorial electrojet
 * Equatorial layered deposits
 * Equatorial mount
 * Equatorial plasma bubble
 * Equatorial platform
 * Equatorial ridge
 * Equatorial ridge on Iapetus
 * Equatorial ring
 * Equatorial room
 * Equatorium
 * Equestria
 * Equiano (crater)
 * Equilibrium partitioning sediment benchmark
 * Equinox
 * Equinox (celestial coordinates)
 * Equivalence principle
 * Equivalence principle (geometric)
 * Equivalent width
 * Equuleus
 * Equuleus in Chinese astronomy
 * Era (geology)
 * Erasmus Oswald Schreckenfuchs
 * Erasmus Reinhold
 * Erathem
 * Eratosthenes (crater)
 * Eratosthenian
 * Erbil Observatory
 * Erciyes University Radio Observatory
 * Ercole Dembowski
 * Erden Eruç
 * Erdkunde
 * Erdstall
 * Erebor Mons
 * Erebus
 * Erebus (crater)
 * Erebus Montes
 * Eremobiotus
 * Eren Ozmen
 * Ergosphere
 * Erhard Etzlaub
 * Erhard Weigel
 * Eric (novel)
 * Eric Agol
 * Eric Bailey (politician)
 * Eric Becklin
 * Eric Bloom
 * Eric Boe
 * Eric C. Anderson
 * Eric Chaisson
 * Eric Flint
 * Eric G. Blackman
 * Eric Gairy
 * Eric Goode
 * Eric Hessels
 * Eric J. Christensen
 * Eric Lerner
 * Eric Miller (musician)
 * Eric Prydz
 * Eric Rignot
 * Eric S. Raymond
 * Eric Schulman
 * Eric Steig
 * Eric Walter Elst
 * Eric Wolff
 * Erich Jantsch
 * Erich Karkoschka
 * Erich Meyer
 * Erich Mühsam
 * Erich Obst
 * Erich Przybyllok
 * Erich Regener
 * Erich von Däniken
 * Erick Morillo
 * Erickatoure Aviance
 * Ericoid mycorrhiza
 * Ericsson R290
 * Eridania Lake
 * Eridania Planitia
 * Eridania quadrangle
 * Eridanos (geology)
 * Eridanus (constellation)
 * Eridanus Cluster
 * Eridanus Group
 * Eridanus II
 * Eridanus in Chinese astronomy
 * Erie Limited
 * Erik Holmberg (astronomer)
 * Erik Ian Asphaug
 * Erik M. Conway
 * Erik Prosperin
 * Erik Quistgaard
 * Erik Rhodes (actor, born 1906)
 * Erik Satie
 * Erik Selvig
 * Erik Sørensen
 * Erik Tengström
 * Erika Blumenfeld
 * Erika Böhm-Vitense
 * Erika Hamden
 * Erin Hotchkiss
 * Erin Pettit
 * Erinome
 * Eriochrome Black T
 * Eris (dwarf planet)
 * Eris (mythology)
 * Eris (simulation)
 * Erlanger (crater)
 * Erle Ellis
 * Ernan McMullin
 * Ernest H. Taves
 * Ernest Leonard Johnson
 * Ernest Scared Stupid
 * Ernest William Brown
 * Ernesto Capocci
 * Ernie Anderson
 * Ernst Abbe
 * Ernst Friedrich Knorre
 * Ernst Geissler
 * Ernst Hartwig
 * Ernst K. Zinner
 * Ernst Krenkel Observatory
 * Ernst Meissel
 * Ernst Messerschmid
 * Ernst Miescher
 * Ernst R. G. Eckert
 * Ernst Steinhoff
 * Ernst Stuhlinger
 * Ernst Zinner
 * Ernst angle
 * Ernst equation
 * Ernst von Rebeur-Paschwitz
 * Ernst Öpik
 * Ernst-Abbe-Sportfeld
 * Erodability
 * Erol Alkan
 * Erol Otus
 * Erosion
 * Erosion and tectonics
 * Erosion control
 * Erosion index
 * Erosion prediction
 * Erosion surface
 * Erotic Nights of the Living Dead
 * Erra-Pater
 * Erriapus
 * Erro (crater)
 * Erroll Chunder Sen
 * Error analysis for the Global Positioning System
 * Ersa (moon)
 * Erté (crater)
 * Erwin Finlay-Freundlich
 * Erwin Obermair
 * Erwin Schwab
 * Erwin Strauss
 * Erygmascope
 * Erythraean Sea
 * Erythrolitmin
 * Erznoznik v. City of Jacksonville
 * Es'hail 2
 * Es'hailSat
 * Escalante (Martian crater)
 * Escambia Amateur Astronomers Association
 * Escape Dynamics
 * Escape Velocity (video game)
 * Escape Velocity Nova
 * Escape Velocity Override
 * Escape from Arcturus
 * Escape from Cluster Prime
 * Escape from Galaxy 3
 * Escape from Mars
 * Escape from New York
 * Escape from Planet Earth
 * Escape from the Planet of the Robot Monsters
 * Escape in the Fog
 * Escape pod
 * Escape velocity
 * Eschenberg Observatory
 * Esclangon (crater)
 * Escort Girls
 * Esdat
 * Eskimo Nebula
 * Esko Valtaoja
 * Esmeralda Mallada
 * Esnault-Pelterie (crater)
 * Espacio Lejano Station
 * Espacio y Desarrollo
 * Esperance Stonehenge
 * Esperanto symbols
 * Espin (crater)
 * Espresso crema effect
 * Esquel (meteorite)
 * Esrange
 * Esri
 * Essaim (satellite)
 * Essam Heggy
 * Essential Biodiversity Variables
 * Essential dignity
 * Esso Research Centre
 * Establishment of a port
 * Estan Patera
 * Estavelle
 * Esteban Adame
 * Esteban Terradas i Illa
 * Estehlal Headquarters
 * Estella Atekwana
 * Estelle Asmodelle
 * Estevan Antonio Fuertes
 * Esther Friesner
 * Estuaries and Coasts
 * Estuarine, Coastal and Shelf Science
 * Estuary
 * Estudios Geológicos
 * Eswatini
 * Eszopiclone
 * Eta Andromedae
 * Eta Antliae
 * Eta Apodis
 * Eta Aquarii
 * Eta Aquariids
 * Eta Aquilae
 * Eta Arae
 * Eta Arietis
 * Eta Aurigae
 * Eta Boötis
 * Eta Cancri
 * Eta Canis Majoris
 * Eta Canis Minoris
 * Eta Capricorni
 * Eta Carinae
 * Eta Carinids
 * Eta Cassiopeiae
 * Eta Centauri
 * Eta Cephei
 * Eta Ceti
 * Eta Chamaeleontis
 * Eta Circini
 * Eta Columbae
 * Eta Coronae Australis
 * Eta Coronae Borealis
 * Eta Corvi
 * Eta Crateris
 * Eta Crucis
 * Eta Cygni
 * Eta Delphini
 * Eta Doradus
 * Eta Draconis
 * Eta Eridani
 * Eta Geminorum
 * Eta Gruis
 * Eta Herculis
 * Eta Horologii
 * Eta Hydrae
 * Eta Hydri
 * Eta Indi
 * Eta Leonis
 * Eta Leporis
 * Eta Lupi
 * Eta Lyrae
 * Eta Mensae
 * Eta Microscopii
 * Eta Muscae
 * Eta Normae
 * Eta Ophiuchi
 * Eta Orionis
 * Eta Pavonis
 * Eta Pegasi
 * Eta Persei
 * Eta Phoenicis
 * Eta Pictoris
 * Eta Piscis Austrini
 * Eta Piscium
 * Eta Pyxidis
 * Eta Reticuli
 * Eta Sagittae
 * Eta Sagittarii
 * Eta Scorpii
 * Eta Sculptoris
 * Eta Scuti
 * Eta Serpentis
 * Eta Telescopii
 * Eta Trianguli Australis
 * Eta Tucanae
 * Eta Ursae Majoris
 * Eta Ursae Minoris
 * Eta Virginis
 * Eta Volantis
 * Eta1 Coronae Australis
 * Eta1 Doradus
 * Eta1 Hydri
 * Eta1 Pictoris
 * Eta2 Coronae Australis
 * Eta2 Doradus
 * Eta2 Hydri
 * Eta2 Hydri b
 * Eta2 Pictoris
 * Etak
 * Etalon (satellite)
 * Eternal inflation
 * Eternals (film)
 * Eternity Road (song)
 * Eternity Weeps
 * Eterobarb
 * Ethallobarbital
 * Ethan Siegel
 * Ethan Vishniac
 * Ethan of Athos
 * Ethanimine
 * Ethel Bellamy
 * Ethenone
 * Ethical extensionism
 * Ethics of terraforming
 * Ethics of uncertain sentience
 * Ethinamate
 * Ethiopia
 * Ethiopia – United States Mapping Mission
 * Ethnogeology
 * Ethyl loflazepate
 * Ethylene glycol poisoning
 * Etizolam
 * Etodroxizine
 * Ettore Bortolotti
 * EuCROPIS
 * Euan MacKie
 * Euanthe (moon)
 * Euboea Montes
 * Eucla Basin
 * Euclid (spacecraft)
 * Euclidean quantum gravity
 * Euclides (crater)
 * Eucrite
 * Euctemon (crater)
 * Eudoxus (Martian crater)
 * Eudoxus (lunar crater)
 * Eugen Sänger
 * Eugene Aserinsky
 * Eugene H. Trinh
 * Eugene L. Tattini
 * Eugene Loh
 * Eugene Merle Shoemaker
 * Eugene Milone
 * Eugene Parker
 * Eugene Podkletnov
 * Eugene Rabe
 * Eugenie… The Story of Her Journey into Perversion
 * Eugenio de Bellard Pietri
 * Eugenius I of Toledo
 * Eugeniusz Rybka
 * Eugène Joseph Delporte
 * Eugène Lourié
 * Eugénie de Sade
 * Eukelade
 * Euler (crater)
 * Euler characteristic of an orbifold
 * Euler's three-body problem
 * Eumetcast
 * Eun-Suk Seo
 * Eunomia family
 * Eupheme (moon)
 * Euporie (moon)
 * Eurasian Astronomical Society
 * Eurasian Geography and Economics
 * Eureka, Nunavut
 * Eurekan orogeny
 * Euripus Mons
 * Euro Space Center
 * Euro-Mediterranean Center on Climate Change
 * Euro-Mir
 * Euro-VO
 * EuroNight
 * Eurobird
 * Eurockot Launch Services
 * Eurocode 7: Geotechnical design
 * Euroluna
 * Euromir
 * Europa (moon)
 * Europa (rocket)
 * Europa Clipper
 * Europa Imaging System
 * Europa Jupiter System Mission – Laplace
 * Europa Lander
 * Europa Orbiter
 * Europa Report
 * Europa Thermal Emission Imaging System
 * Europa Ultraviolet Spectrograph
 * European Association for Astronomy Education
 * European Association of Remote Sensing Laboratories
 * European Astrobiology Network Association
 * European Astronaut Centre
 * European Astronaut Corps
 * European Astronomical Society
 * European Atlas of the Seas
 * European Bat Night
 * European Centre for Medium-Range Weather Forecasts
 * European Centre for Space Applications and Telecommunications
 * European Climate Foundation
 * European Combined Geodetic Network
 * European Commissioner for Industry and Entrepreneurship
 * European Conference on Radar in Meteorology and Hydrology
 * European Cooperation for Space Standardization
 * European Data Relay System
 * European Digital Archive on Soil Maps of the World
 * European Drawer Rack
 * European Environment Agency
 * European Fireball Network
 * European GNSS Agency
 * European Geography Association
 * European Geosciences Union
 * European Geostationary Navigation Overlay Service
 * European Gravitational Observatory
 * European Journal of Remote Sensing
 * European Launcher Development Organisation
 * European Low Gravity Research Association
 * European Lunar Explorer
 * European Mars Analog Research Station
 * European Multidisciplinary Seafloor and water column Observatory
 * European Northern Observatory
 * European Organisation for Civil Aviation Equipment
 * European Organisation for the Exploitation of Meteorological Satellites
 * European Physical Journal D
 * European Physiology Modules
 * European Plain
 * European Pollen Database
 * European Programme for Life and Physical Sciences in Space
 * European Project on Ocean Acidification
 * European Pulsar Timing Array
 * European Remote-Sensing Satellite
 * European Retrievable Carrier
 * European Robotic Arm
 * European Rover Challenge
 * European Satellite Navigation Competition
 * European Satellite Navigation Industries
 * European Service Module
 * European Sleep Apnea Database
 * European Soil Bureau Network
 * European Soil Database
 * European Solar Physics Division
 * European Solar Telescope
 * European Southern Observatory
 * European Southern Observatory Catalog
 * European Space Agency
 * European Space Agency Science Programme
 * European Space Astronomy Centre
 * European Space Camp
 * European Space Information System
 * European Space Operations Centre
 * European Space Research Organisation
 * European Space Research and Technology Centre
 * European Space Security and Education Centre
 * European Space Weather portal
 * European Student Moon Orbiter
 * European Synchrotron Radiation Facility
 * European Technology Exposure Facility
 * European Transportation Carrier
 * European Underground Rare Event Calorimeter Array
 * European Union Agency for the Space Programme
 * European Union System for the Evaluation of Substances
 * European VLBI Network
 * European Venus Explorer
 * European contribution to the International Space Station
 * European eXPErimental Re-entry Testbed
 * European environmental research and innovation policy
 * European grid
 * European hazard symbols
 * European watershed
 * Europlanet
 * Europlanetarium Genk
 * Eurospace
 * Eurospy film
 * Eurostar (satellite bus)
 * Eurostar E3000
 * Euryarchaeota
 * Eurydome (moon)
 * Eurymedon (mythology)
 * Eurytus (Pythagorean)
 * Eustachio Manfredi
 * Eutelsat
 * Eutelsat 113 West A
 * Eutelsat 115 West B
 * Eutelsat 117 West A
 * Eutelsat 16B
 * Eutelsat 16C
 * Eutelsat 21B
 * Eutelsat 25B/Es'hail 1
 * Eutelsat 31A
 * Eutelsat 33B
 * Eutelsat 33C
 * Eutelsat 33E
 * Eutelsat 36A
 * Eutelsat 36B
 * Eutelsat 3D
 * Eutelsat 4A
 * Eutelsat 5 West A
 * Eutelsat 5 West B
 * Eutelsat 70B
 * Eutelsat 8 West C
 * Eutelsat I F-1
 * Eutelsat Konnect
 * Eutelsat W3A
 * Eutrophication
 * Eutropical subsea
 * Euxinia
 * Eva Ahnert-Rohlfs
 * Eva Grebel
 * Eva Longoria
 * Evan Lorne
 * Evans & Sutherland
 * Evans (crater)
 * Evans Starzinger
 * Evaporating gaseous globule
 * Evaporation
 * Evapotranspiration
 * Evdokimov (crater)
 * Eve Graham
 * Eve Online
 * Eve Sleep
 * Eve's Hangout
 * Eve: The Second Genesis
 * Eve: Valkyrie
 * Evection
 * Evelyn C. Leeper
 * Evelyn Miralles
 * Evening economy
 * Evening's Empires
 * Event 0
 * Event Horizon (film)
 * Event Horizon Telescope
 * Event chart
 * Event horizon
 * Event symmetry
 * Ever Upwards: ISRO in Images
 * Everett Kinstler
 * Everett's scops owl
 * Evershed (crater)
 * Evershed effect
 * Everspace
 * Every Christian Lion Hearted Man Will Show You
 * Every Picture Tells a Story (event)
 * Everything Happens to Me (1980 film)
 * Everything's Magic
 * Evgenidio Foundation
 * Evgeny Tarelkin
 * Evidence of water on Mars found by Mars Reconnaissance Orbiter
 * Evidence of water on Mars from Mars Odyssey
 * Evidence-based conservation
 * Evidence-based toxicology
 * Evil Laugh
 * Evil-Lyn
 * Evo Terra
 * Evochron Alliance
 * Evochron Legends
 * Evochron Renegades
 * Evolution (Baxter novel)
 * Evolution of Hawaiian volcanoes
 * Evolutionary Map of the Universe
 * Evolutionary fauna
 * Evolva
 * Evolve (video game)
 * Evolving the Alien
 * Evoxine
 * Evryscope
 * Ew!
 * Ewald's sphere
 * Ewan Pearson
 * Ewen Whitaker
 * Ewine van Dishoeck
 * Ewok
 * Ewoks: The Battle for Endor
 * ExPRESS Logistics Carrier
 * ExPace
 * Exact solutions in general relativity
 * Exaltation (astrology)
 * Excalibur Almaz
 * Excavations at Stonehenge
 * Exceptional Public Achievement Medal
 * Excession
 * Excessive daytime sleepiness
 * Excimer lamp
 * Excited and Scared
 * Exclusive economic zone
 * Excursion to the Moon
 * Executive Committee of the Space Research Council
 * Executor (rocket engine)
 * Exeligmos
 * Exeter Cathedral astronomical clock
 * Exfoliating granite
 * Exfoliation joint
 * Exhaust gas
 * Exhumation (geology)
 * Exhumed river channel
 * Exiguobacterium
 * Exile's Song
 * Exmoor
 * Exner equation
 * Exner function
 * ExoCube (CP-10)
 * ExoLance
 * ExoLife Finder
 * ExoMars
 * ExoMol
 * Exoatmospheric Kill Vehicle
 * Exoatmospheric Reentry-vehicle Interceptor Subsystem
 * Exobiology Radiation Assembly
 * Exocomet
 * Exodus (Starfire)
 * Exogenesis: Symphony
 * Exolaunch
 * Exomedicine
 * Exomoon
 * Exoplanet
 * Exoplanet Data Explorer
 * Exoplanet Explorers
 * Exoplanet naming convention
 * Exoplanetary Circumstellar Environments and Disk Explorer
 * Exoplanetology
 * Exos Aerospace
 * Exosphere
 * Exotheology
 * Exotic Erotic Ball
 * Exotic matter
 * Exotic star
 * Exozodiacal dust
 * Expanded clay aggregate
 * Expanded crater
 * Expander cycle
 * Expanding Earth
 * Expanding nozzle
 * Expansion of the universe
 * Expansions of Eve Online
 * Expansive clay
 * Expectation fulfilment theory of dreaming
 * Expedition (book)
 * Expedition 1
 * Expedition 10
 * Expedition 11
 * Expedition 12
 * Expedition 13
 * Expedition 14
 * Expedition 15
 * Expedition 16
 * Expedition 17
 * Expedition 18
 * Expedition 19
 * Expedition 2
 * Expedition 20
 * Expedition 21
 * Expedition 22
 * Expedition 23
 * Expedition 24
 * Expedition 25
 * Expedition 26
 * Expedition 27
 * Expedition 28
 * Expedition 29
 * Expedition 3
 * Expedition 30
 * Expedition 31
 * Expedition 32
 * Expedition 33
 * Expedition 34
 * Expedition 35
 * Expedition 36
 * Expedition 37
 * Expedition 38
 * Expedition 39
 * Expedition 4
 * Expedition 40
 * Expedition 41
 * Expedition 42
 * Expedition 43
 * Expedition 44
 * Expedition 45
 * Expedition 46
 * Expedition 47
 * Expedition 48
 * Expedition 49
 * Expedition 5
 * Expedition 50
 * Expedition 51
 * Expedition 52
 * Expedition 53
 * Expedition 54
 * Expedition 55
 * Expedition 56
 * Expedition 57
 * Expedition 58
 * Expedition 59
 * Expedition 6
 * Expedition 60
 * Expedition 61
 * Expedition 62
 * Expedition 63
 * Expedition 64
 * Expedition 65
 * Expedition 7
 * Expedition 8
 * Expedition 9
 * Expedition Venus
 * Expendable launch system
 * Experience Curiosity
 * Experiment to Detect the Global EoR Signature
 * Experimental Geodetic Payload
 * Exploding head syndrome
 * Exploitation film
 * Exploration Flight Test-1
 * Exploration Gateway Platform
 * Exploration Ground Systems
 * Exploration Systems Architecture Study
 * Exploration of Io
 * Exploration of Jupiter
 * Exploration of Mars
 * Exploration of Mercury
 * Exploration of Neptune
 * Exploration of Pluto
 * Exploration of Saturn
 * Exploration of Uranus
 * Exploration of the Moon
 * Explore Scientific
 * Explorer 1
 * Explorer 10
 * Explorer 11
 * Explorer 12
 * Explorer 13
 * Explorer 14
 * Explorer 15
 * Explorer 16
 * Explorer 17
 * Explorer 18
 * Explorer 19
 * Explorer 2
 * Explorer 20
 * Explorer 21
 * Explorer 22
 * Explorer 23
 * Explorer 24
 * Explorer 26
 * Explorer 27
 * Explorer 28
 * Explorer 29
 * Explorer 3
 * Explorer 31
 * Explorer 32
 * Explorer 33
 * Explorer 34
 * Explorer 35
 * Explorer 36
 * Explorer 38
 * Explorer 39
 * Explorer 4
 * Explorer 41
 * Explorer 43
 * Explorer 45
 * Explorer 47
 * Explorer 49
 * Explorer 5
 * Explorer 50
 * Explorer 51
 * Explorer 52
 * Explorer 54
 * Explorer 55
 * Explorer 6
 * Explorer 60
 * Explorer 7
 * Explorer 8
 * Explorer 9
 * Explorer of Enceladus and Titan
 * Explorer-1 Prime
 * Exploring the Earth and the Cosmos
 * Explosion
 * Expocode
 * Exponerad
 * Exposing Microorganisms in the Stratosphere
 * Exposition Flyer
 * Exposure (heights)
 * Exposure assessment
 * Exposure science
 * Extant (TV series)
 * Extended Duration Orbiter
 * Extended Groth Strip
 * Extended Net
 * Extended X-ray absorption fine structure
 * Extended supersymmetry
 * Extended theories of gravity
 * External Active Thermal Control System
 * External stowage platform
 * External vision system
 * Extinct (2017 TV series)
 * Extinct comet
 * Extinct radionuclide
 * Extinction (astronomy)
 * Extinction Rebellion
 * Extinction Rebellion Youth
 * Extinction cross
 * Extinction debt
 * Extinction event
 * Extra dimensions
 * Extra-Terrestrial Exposure Law
 * ExtraTERRORestrial Alien Encounter
 * Extracellular polymeric substance
 * Extragalactic astronomy
 * Extragalactic background light
 * Extragalactic cosmic ray
 * Extragalactic planet
 * Extraplanar gas
 * Extrasolar Planets Encyclopaedia
 * Extrasolar object
 * Extraterrestrial (2014 film)
 * Extraterrestrial (TV program)
 * Extraterrestrial Civilizations
 * Extraterrestrial Sample Curation Center
 * Extraterrestrial atmosphere
 * Extraterrestrial diamonds
 * Extraterrestrial hypothesis
 * Extraterrestrial intelligence
 * Extraterrestrial life
 * Extraterrestrial liquid water
 * Extraterrestrial materials
 * Extraterrestrial real estate
 * Extraterrestrial sample curation
 * Extraterrestrial sky
 * Extraterrestrial vortex
 * Extraterrestrials in fiction
 * Extravehicular Mobility Unit
 * Extravehicular activity
 * Extremal black hole
 * Extreme Ice Survey
 * Extreme Measures (Star Trek: Deep Space Nine)
 * Extreme Ultraviolet Explorer
 * Extreme environment
 * Extreme helium star
 * Extreme mass ratio inspiral
 * Extreme point (disambiguation)
 * Extreme points of Central America
 * Extreme points of Earth
 * Extreme points of Eurasia
 * Extreme points of North America
 * Extreme points of South America
 * Extreme points of the Arctic
 * Extreme points of the Caribbean
 * Extreme points of the Commonwealth of Nations
 * Extreme trans-Neptunian object
 * Extreme ultraviolet Imaging Telescope
 * Extremely Large Telescope
 * Extremely large telescope
 * Extremes (novel)
 * Extremes on Earth
 * Extremophile
 * Extremozyme
 * Eye in the Sky (novel)
 * Eye of Harmony
 * Eye of Ra
 * Eye of the Needle (Star Trek: Voyager)
 * Eye tracking on the International Space Station
 * Eye-D
 * Eyeball planet
 * Eyepiece
 * Eyes Galaxies
 * Eyesat-1
 * Eyre Lacuna
 * Ezinu (crater)
 * Ezra Otis Kendall
 * Ezra T. Newman
 * E²
 * Eärendil and Elwing
 * Eóganacht Áine
 * Eóganachta
 * Eötvös (crater)
 * Eötvös effect
 * F Centauri
 * F Cygni
 * F Eridani
 * F Hydrae
 * F Orionis
 * F Puppis
 * F Velorum
 * F region
 * F(R) gravity
 * F-1 (satellite)
 * F-Zero
 * F-Zero (video game)
 * F-Zero Climax
 * F-Zero GX
 * F-Zero X
 * F-Zero: GP Legend (video game)
 * F-ratio
 * F-term
 * F-theory
 * F-type asteroid
 * F-type main-sequence star
 * F. Drew Gaffney
 * F. J. Duarte
 * F. J. M. Stratton
 * F. M. Busby
 * F. Orlin Tremaine
 * F. Richard Stephenson
 * F. W. Harvey
 * F.W. Clarke Medal
 * F.lux
 * F2 propagation
 * F24 camera
 * FACSAT-1
 * FADEC
 * FAI Gold Air Medal
 * FAO soil classification
 * FAST20XX
 * FASTRAC
 * FASTSAT
 * FASat-Alfa
 * FC Carl Zeiss Jena
 * FC Kahuna
 * FEDOR (robot)
 * FESOM
 * FF Andromedae
 * FF Aquilae
 * FG Sagittae
 * FG-02
 * FG-15
 * FG-36
 * FG-46
 * FG-47
 * FH Serpentis
 * FIELDS
 * FITS
 * FK Comae Berenices
 * FL Lyrae
 * FLARM
 * FLCL
 * FLEX (satellite)
 * FLTSATCOM-3
 * FN Canis Majoris
 * FNET
 * FO Aquarii
 * FOCAL (spacecraft)
 * FORTE
 * FOSI, Forum Sedimentologiwan Indonesia
 * FOXSI Sounding Rocket
 * FR-1 (satellite)
 * FRB 180916.J0158+65
 * FRW/CFT duality
 * FS Canis Majoris
 * FS Canis Majoris variable
 * FSC 15307+3253
 * FSR 1758
 * FTL: Faster Than Light
 * FTV-1126
 * FTV-1132
 * FTV-2203
 * FU Orionis
 * FU Orionis star
 * FU Tauri
 * FUNcube-1
 * Fabbroni (crater)
 * Faber–Jackson relation
 * Fabian Gottlieb von Bellingshausen
 * Fabian Lenz
 * Fabibacter pacificus
 * Fabio (DJ)
 * Fabio Pacucci
 * Fabio Zerpa
 * Fabra Observatory
 * Fabric (club)
 * Fabricius (crater)
 * Fabrizio Bernardi
 * Fabry (crater)
 * Fabry–Pérot interferometer
 * Face control
 * Face on Moon South Pole
 * Faces of Death
 * Faces of Death II
 * Faces of Death III
 * Faces of Death IV
 * Faces of Death V
 * Faces of Death VI
 * Facial disc
 * Facility for Airborne Atmospheric Measurements
 * Facing Future (Organization)
 * Factions of Halo
 * Facula
 * Faculty of Astrological Studies
 * Faculty of Earth Sciences, King Abdulaziz University
 * Faculty of Geodesy and Land Management of the University of Warmia and Mazury in Olsztyn
 * Faculty of Geodesy, University of Zagreb
 * Faerie (DC Comics)
 * Fahlband
 * Fahrenheit (crater)
 * Failed supernova
 * Failure Is Not an Option
 * Faint Images of the Radio Sky at Twenty-Centimeters
 * Faint Object Camera
 * Faint Object Spectrograph
 * Faint blue galaxy
 * Faint young Sun paradox
 * Fairbanks Museum and Planetarium
 * Fairchild K-20
 * Fairy circle (arid grass formation)
 * Faith (meteorite)
 * Faith Vilas
 * Faizrakhmanist
 * Fajr (satellite)
 * Fakhr al-Din al-Razi
 * Falacer
 * Falco Lombardi
 * Falcon 9 first-stage landing tests
 * Falcon 9 flight 10
 * Falcon 9 flight 20
 * Falcon 9 flight 26
 * Falcon 9 prototypes
 * Falcon Heavy test flight
 * FalconSAT
 * FalconSAT-2
 * Falcons of Narabedla
 * Falk Herwig
 * Falke (spacecraft)
 * Fall line
 * Fall line (topography)
 * Fall prevention
 * Fall protection
 * Fallen Astronaut
 * Falling (execution)
 * Falling (sensation)
 * Falling Onto Mars
 * Falling Skies
 * Falling Skies (season 1)
 * Falling Skies (season 2)
 * Falling Skies (season 3)
 * Falling Skies (season 4)
 * Falling Skies (season 5)
 * Falling Water (TV series)
 * Fallout shelter
 * Fallow Buck Inn
 * Falls in older adults
 * Fallstreak hole
 * Fallturm Bremen
 * False awakening
 * False vacuum
 * Falsion
 * Falstaff (rocket)
 * Family Portrait (MESSENGER)
 * Family Portrait (Voyager)
 * Family symmetries
 * Fan Mountain Observatory
 * Fan death
 * Fanaroff–Riley classification
 * Fand Mons
 * Fang Lizhi
 * Fangyan Formation
 * Fanhui Shi Weixing
 * Fanny Hill (1968 film)
 * Fantasmic!
 * Fantastic Fireworks
 * Fantastic Planet
 * Fantasy Bedtime Hour
 * Fantasy in the Sky
 * Fanuankuwel
 * Far 3 kpc Arm
 * Far Cry 5
 * Far Gate
 * Far Out Space Nuts
 * Far Ultraviolet Camera/Spectrograph
 * Far Ultraviolet Spectroscopic Explorer
 * Far side of the Moon
 * Far-infrared Outgoing Radiation Understanding and Monitoring
 * Far-infrared astronomy
 * FarFarOut
 * Faraday (crater)
 * Faraday cup
 * Faraday effect
 * Farah Alibay
 * Farah Mendlesohn
 * Faramir Colles
 * Farbauti (moon)
 * Farcaster
 * Farewell Fantastic Venus
 * Farewell to the Master
 * Fargam
 * Fargo (season 2)
 * Farhana Sultana
 * Farim (crater)
 * Farinelli and the King
 * Farley–Buneman instability
 * Farm Cove Observatory
 * Farm Forestry Toolbox
 * Farmer in the Sky
 * Farnese Atlas
 * Farnham Astronomical Society
 * Farouk El-Baz
 * Farpoint (video game)
 * Farpoint Observatory
 * Farscape
 * Farside Cannon
 * Farzana Dua Elahe
 * Fashion Monster
 * Fasli calendar
 * Fast Auroral Snapshot Explorer
 * Fast Data eXchange
 * Fast Infrared Exoplanet Spectroscopy Survey Explorer
 * Fast Low-Ionization Emission Region
 * Fast Sulphon Black F
 * Fast blue optical transient
 * Fast ice
 * Fast inverse square root
 * Fast radio burst
 * Faster-than-light
 * Faster-than-light neutrino anomaly
 * Fasti
 * Fasti (poem)
 * Fasti Antiates Maiores
 * Fasti Capitolini
 * Fasti Ostienses
 * Fasti Potentini
 * Fasti Triumphales
 * Fasti vindobonenses
 * Fat Cat, Norwich
 * Fat Guy Stuck in Internet
 * Fat Old Sun
 * Fatal Frame: Mask of the Lunar Eclipse
 * Fatal insomnia
 * Fathers & Suns
 * Fathom Five National Marine Park
 * Fati (god)
 * Fatih Ozmen
 * Fatin Gökmen
 * Fatoumata Kébé
 * Faucet Inn
 * Faulkes Telescope North
 * Faulkes Telescope Project
 * Faulkes Telescope South
 * Faulkner (crater)
 * Fault breccia
 * Fault gouge
 * Faustini (crater)
 * Fauth (crater)
 * Faye (crater)
 * Fayet–Iliopoulos D-term
 * Fe, Fi, Fo, Fum, and Phooey
 * Fear, Itself
 * Fearful Pranks Ensue
 * Fearful owl
 * Fearless (Pink Floyd song)
 * Fearless Photog
 * Feature data
 * Febarbamate
 * Februarius
 * Fech fech
 * Fechner (crater)
 * FedSat
 * Fedde Le Grand
 * Federal Building (Colorado Springs, Colorado)
 * Federal Express (train)
 * Federal Institute for Geosciences and Natural Resources
 * Federation (novel)
 * Federation of Analytical Chemistry and Spectroscopy Societies
 * Federation of Astronomical Societies
 * Federation of Damanhur
 * Federation of Earth Science Information Partners
 * Federation of Free Traders
 * Fedorov (crater)
 * Feeder bluff
 * Feersum Endjinn
 * Feet of Clay (novel)
 * Fei Junlong
 * Feia Lacus
 * Feige 55
 * Feinstein's/54 Below
 * Feitian space suit
 * Felguk
 * Felicia Day
 * Felicity (film)
 * Felicity Aston
 * Felicjan Kępiński
 * Felis (constellation)
 * Felisa Wolfe-Simon
 * Felix A. Aharonian
 * Felix Andries Vening Meinesz
 * Felix Baumgartner
 * Felix Chayes Prize
 * Felix Hormuth
 * Felix Pirani
 * Felix Ziegel
 * Felix da Housecat
 * Fell
 * Fellfield
 * Fellgett's advantage
 * Felsite
 * Female Convict Scorpion: Beast Stable
 * Female Prisoner Scorpion: 701's Grudge Song
 * Female Prisoner: Cage
 * Female Vampire
 * Femme nue dormant au bord de l'eau
 * Femtochemistry
 * Fen
 * Fen-meadow
 * Fena: Pirate Princess
 * Fenadiazole
 * Fenagh (crater)
 * Fenambosy Chevron
 * Fengjia Night Market
 * Fengyun
 * Fengyun 2-05
 * Fengyun 2-07
 * Fennia (journal)
 * Fenrir (moon)
 * Fenton's reagent
 * Feodosy Krasovsky
 * Feoktistov (crater)
 * Feralia Planitia
 * Ferber method
 * Ferdinand (moon)
 * Ferdinand Augustin Hallerstein
 * Ferdinand Joseph Schmidt
 * Ferdinand Magellan
 * Ferdinand Rudolph Hassler
 * Ferdinand von Wrangel
 * Ferenc Pavlics
 * Feretrius
 * Fergie (DJ)
 * Ferguson landslide
 * Ferhan Çeçen
 * Ferhat Ozcep
 * Feriale Duranum
 * Fermat (crater)
 * Fermat's and energy variation principles in field theory
 * Fermi (crater)
 * Fermi Gamma-ray Space Telescope
 * Fermi acceleration
 * Fermi and Frost
 * Fermi ball
 * Fermi glow
 * Fermi paradox
 * Fermi resonance
 * Fermi–Walker transport
 * Fernand Courty
 * Fernand Rigaux
 * Fernando Pedichini
 * Fernando Villaamil
 * Fernbank Observatory
 * Fernbank Science Center
 * Fernelius (crater)
 * Ferrallitisation
 * Ferranti Argus
 * Ferret Data Visualization and Analysis
 * Ferricrete
 * Ferrimicrobium acidiphilum
 * Ferro meridian
 * Ferrofluid
 * Ferroglobus
 * Ferromagnetic resonance
 * Ferromanganese nodules
 * Ferroplasma
 * Ferroplasma acidiphilum
 * Ferroplasmaceae
 * Ferry Corsten
 * Fersman (crater)
 * Fertile Crescent
 * Fervidicoccus
 * Feryal Özel
 * Fesenkov (Martian crater)
 * Fesenkov (lunar crater)
 * Fesenkov Astrophysical Institute
 * Festa del Redentore
 * Festungsfront Oder-Warthe-Bogen
 * Fet (crater)
 * Fetish club
 * Feuillée (crater)
 * Feynman's Lost Lecture
 * Fiammetta Wilson
 * Fiasco (novel)
 * Fiber Bragg grating
 * Fiber roll
 * Fiber-optic Improved Next-generation Doppler Search for Exo-Earths
 * Fibersat
 * Fibiger (crater)
 * Fibre multi-object spectrograph
 * Fibrous root system
 * Fick Observatory
 * Fiction featuring Merlin
 * Fictional planets of the Solar System
 * Fictional universe of Avatar
 * Fiebre (film)
 * Field Trip (application)
 * Field capacity
 * Field galaxy
 * Field guide
 * Field of Streams
 * Field of regard
 * Field propulsion
 * Field-aligned irregularity
 * Field-reversed configuration
 * Fife Symington
 * Fifth Cambridge Survey of Radio Sources
 * Fifth Planet (novel)
 * Fifth planet (hypothetical)
 * Fifth principal meridian
 * Fifty Shades of Black
 * Fight for Your Life
 * Fighters from Mars
 * Figure of the Earth
 * Figure-ground (cartography)
 * Filar micrometer
 * Filip Hjulström
 * Filipino names in space
 * Filippo Ferrari
 * Filippo Salviati
 * Fill dirt
 * Film Forum
 * Film Guild Cinema
 * Film Streams
 * Film society
 * Filmstaden (cinema chain)
 * Filo & Peri
 * Filter fluorometer
 * Filter strip
 * Fimbulthul stream
 * Final Countdown (video game)
 * Final Doom
 * Final Exam (1981 film)
 * Final Fantasy IV
 * Final Fantasy XIV
 * Final Fantasy: The Spirits Within
 * Final Space
 * Finale (Smallville)
 * Financial astrology
 * Find My Friends
 * Finderscope
 * Finding Merlin
 * Finding Nemo Submarine Voyage
 * Finding of Moses
 * Fine Gold Intrusive Suite
 * Fine Guidance Sensor (HST)
 * Fine Guidance Sensor and Near Infrared Imager and Slitless Spectrograph
 * Fine guidance sensor
 * Fine-Resolution Epithermal Neutron Detector
 * Fine-tuned universe
 * Finished (short story)
 * Finisterre universe
 * Finite Volume Community Ocean Model
 * Finite element machine
 * Finite water-content vadose zone flow method
 * Finity's End
 * Finley Duncan
 * Finnegans Wake
 * Finnis souterrain
 * Finnish Geodetic Institute
 * Finnish Meteorological Institute
 * Finsch (crater)
 * Finsen (crater)
 * Fiona A. Harrison
 * Fiona Kelleghan
 * Fiorella Terenzi
 * Firdousi (crater)
 * Fire (Kasabian song)
 * Fire (classical element)
 * Fire (wuxing)
 * Fire Eagle
 * Fire Maidens from Outer Space
 * Fire Season
 * Fire and brimstone
 * Fire in ancient Iranian culture
 * Fire in the Sky
 * Fire rock
 * Fire temple
 * Fire urgency estimator in geosynchronous orbit
 * Fire worship
 * Fireball XL5
 * Firecracker
 * Firecracker welding
 * Firefly
 * Firefly (TV series)
 * Firefly (franchise)
 * Firefly Aerospace
 * Firehose instability
 * Firewall (physics)
 * Firework Code
 * Fireworks
 * Fireworks (magazine)
 * Fireworks Regulations 2004
 * Fireworks bans in China
 * Fireworks by Grucci
 * Fireworks competitions
 * Fireworks law in the United Kingdom
 * Fireworks policy in Belgium
 * Fireworks policy in the European Union
 * Fireworks policy in the Netherlands
 * Fireworks policy in the United States
 * Firkin Brewery
 * Firmament
 * Firmicus (crater)
 * Firn
 * Firouz Naderi
 * Firsoff (Martian crater)
 * Firsov (crater)
 * First Cambridge Catalogue of Radio Sources
 * First Contact (Star Trek: The Next Generation)
 * First Contact (novelette)
 * First Contact?
 * First Council of Braga
 * First Dutch Expedition to Nusantara
 * First Expedition
 * First Landing
 * First Lensman
 * First Light (Preston book)
 * First Lunar Outpost
 * First Man (film)
 * First Man: The Life of Neil A. Armstrong
 * First Men in the Moon (1964 film)
 * First Men to the Moon
 * First Orbit
 * First Point of Aries
 * First State (DJ)
 * First Wave (TV series)
 * First and Only (novel)
 * First appearance datum
 * First contact (science fiction)
 * First flush
 * First light (astronomy)
 * First observation of gravitational waves
 * First on the Moon
 * First on the Moon (Armstrong, Collins, and Aldrin book)
 * First principal meridian
 * First to the Moon: The Journey of Apollo 8
 * First-magnitude star
 * Firstborn (Clarke and Baxter novel)
 * Firstborn (Star Trek: The Next Generation)
 * Fischer (crater)
 * Fischler–Susskind mechanism
 * Fish Go Deep
 * Fish kill
 * Fish owl
 * Fish sting
 * FishCenter Live
 * Fishery Bulletin
 * Fishing owl
 * Fiske Planetarium
 * Fissility (geology)
 * Fission Product Pilot Plant
 * Fitnah (crater)
 * FitzGerald (crater)
 * FitzGerald dynasty
 * Fitzroy Tavern
 * Five Against Venus
 * Five All Night, Live All Night
 * Five Billion Years of Solitude
 * Five Chariots
 * Five College Radio Astronomy Observatory
 * Five Eyes Air Force Interoperability Council
 * Five Mile House, Duntisbourne Abbots
 * Five Suns
 * Five on the Black Hand Side
 * Five-hundred-meter Aperture Spherical Telescope
 * Five-planet Nice model
 * Five-pointed star
 * Fixed sign
 * Fixed stars
 * Fixed-point ocean observatory
 * Fizeau (crater)
 * Fizeau interferometer
 * Fjord
 * Flack parameter
 * Flag (crater)
 * Flag and coat of arms of Johor
 * Flag and coat of arms of Kelantan
 * Flag and coat of arms of Moldavia
 * Flag and coat of arms of Negeri Sembilan
 * Flag and coat of arms of Selangor
 * Flag and coat of arms of Terengganu
 * Flag and seal of Illinois
 * Flag and seal of New Hampshire
 * Flag of Earth
 * Flag of Mars
 * Flag of Sioux Falls, South Dakota
 * Flag of the United States Space Force
 * Flaiano (crater)
 * Flame Nebula
 * Flame rectification
 * Flame structure
 * Flaming (song)
 * Flaming chalice
 * Flaming sword (mythology)
 * Flamingo (train)
 * Flammarion (Martian crater)
 * Flammarion (lunar crater)
 * Flammulated owl
 * Flamsteed (crater)
 * Flamsteed designation
 * Flanders Marine Institute
 * Flandrau Science Center and Planetarium
 * Flandrian interglacial
 * Flare star
 * Flarestar Observatory
 * Flark
 * Flaser bed
 * Flash (Queen song)
 * Flash (lake)
 * Flash Gordon
 * Flash Gordon & the Warriors of Mongo
 * Flash Gordon (1954 TV series)
 * Flash Gordon (1996 TV series)
 * Flash Gordon (2007 TV series)
 * Flash Gordon (film)
 * Flash Gordon (pinball)
 * Flash Gordon (serial)
 * Flash Gordon (soundtrack)
 * Flash Gordon (video game)
 * Flash Gordon Classic
 * Flash Gordon Conquers the Universe
 * Flash Gordon Strange Adventure Magazine
 * Flash Gordon's Trip to Mars
 * Flash Gordon: The Greatest Adventure of All
 * Flash flood
 * Flash flood guidance system
 * Flash photolysis
 * Flashback (1992 video game)
 * Flashline Mars Arctic Research Station
 * Flashtube
 * Flat (landform)
 * Flat Earth
 * Flat Earth FC
 * Flat cat
 * Flat coast
 * Flat-field correction
 * Flatlander (short story)
 * Flatline (B.o.B song)
 * Flatness (cosmology)
 * Flatness problem
 * Flatspace
 * Flattening
 * Flatwood
 * Flatwoods monster
 * Flaubert (crater)
 * Flaugergues (crater)
 * Flavobacterium psychrophilum
 * Flavour (particle physics)
 * Flaxman crater
 * Fleece Hotel
 * Fleet Science Center
 * Fleet Survey Team
 * Fleet telematics system
 * FleetBroadband
 * Fleischmann Planetarium & Science Center
 * Fleming (crater)
 * Fleming 1
 * Flensburg radar detector
 * Flesh Gordon
 * Flesh Gordon Meets the Cosmic Cheerleaders
 * Fletcher Watson
 * Fleur de Lys, St Albans
 * Flex temp
 * FlexCraft
 * Flexible path
 * Flick (physics)
 * Flight Research Laboratory
 * Flight controller
 * Flight director (aeronautics)
 * Flight dynamics
 * Flight dynamics (fixed-wing aircraft)
 * Flight dynamics (spacecraft)
 * Flight envelope protection
 * Flight management system
 * Flight on Titan
 * Flight qualification
 * Flight recorder
 * Flight spare
 * Flight test
 * Flight to Mars (film)
 * Flight traffic mapping
 * FlipOut!
 * Flipped SU(5)
 * Floating (The Moody Blues song)
 * Floating cities and islands in fiction
 * Floating collimator
 * Floating landing platform
 * Floc (biofilm)
 * Flocculent spiral galaxy
 * Flock-1
 * Flood
 * Flood (Halo)
 * Flood Studies Report
 * Flood barrier
 * Flood basalt
 * Flood bypass
 * Flood forecasting
 * Flood opening
 * Flood stage
 * Flood warning
 * Flooded grasslands and savannas
 * Floodgate
 * Floodplain
 * Flop-transition
 * Flora Hiperspectral
 * Flora family
 * Florence Cathedral
 * Florence Gschwend
 * Florence Shirley Patterson Jones
 * Florence Taylor Hildred
 * Florence meridian
 * Florensky (crater)
 * Florentine calendar
 * Flores scops owl
 * Florey (crater)
 * Florian Goebel
 * Florica Topârceanu
 * Florida Environmental Research Institute
 * Florida Space Institute
 * Florida Space Research Institute
 * Florida Studio Theatre
 * Florida Theatre
 * Floréal
 * Flotilla (video game)
 * Flotsam, jetsam, lagan and derelict
 * Flow tracer
 * Flow-following, finite-volume Icosahedral Model
 * Flower and Snake
 * Flower of Kent
 * Flowerpot technique
 * Flownet
 * Flubromazepam
 * Fluctuation X-ray scattering
 * Fludiazepam
 * Flue-gas stack
 * Fluence response
 * Fluid Science Laboratory
 * Fluid conductance
 * Fluid flow through porous media
 * Fluid solution
 * Fluid thread breakup
 * Flula Borg
 * Fluorescence
 * Fluorescence correlation spectroscopy
 * Fluorescence cross-correlation spectroscopy
 * Fluorescence image-guided surgery
 * Fluorescence intermittency
 * Fluorescence microscope
 * Fluorescence recovery after photobleaching
 * Fluorescence spectroscopy
 * Fluorescent lamp
 * Fluorescent lamps and health
 * Fluorescent-lamp formats
 * Fluorometer
 * Fluoromethane
 * Fluppy Dogs
 * Flurazepam
 * Flute (glacial)
 * Fluting (geology)
 * Fluvial landforms of streams
 * Fluvial processes
 * Fluvio-glacial
 * Fluvio-thermal erosion
 * Fluvioglacial landform
 * Fluvisol
 * Flux (novel)
 * Flux loop
 * Flux transfer event
 * Flux tube
 * Flux-cored arc welding
 * Fly Me
 * Fly Me to the Moon
 * Fly Me to the Moon (film)
 * Flyby (spaceflight)
 * Flyby anomaly
 * Flyby of Io with Repeat Encounters
 * Flying (Beatles instrumental)
 * Flying Disc Man from Mars
 * Flying Horse Inn
 * Flying Saucer Rock'n'Roll
 * Flying Saucers (attraction)
 * Flying Saucers from Outer Space
 * Flying Scotsman, Kings Cross
 * Flying and gliding animals
 * Flying primate hypothesis
 * Flying river
 * Flying saucer
 * Flying serpent (asterism)
 * Flynn Creek crater
 * Fnatic
 * Foamhenge
 * Fobos-Grunt
 * Focal-plane array (radio astronomy)
 * Focas (Martian crater)
 * Focas (lunar crater)
 * Focus Corporation
 * Foe (unit)
 * Foelsche crater
 * Fog bow
 * Fog collection
 * Fogtrein
 * Foil (song)
 * Fokker Technologies
 * Fold (geology)
 * Fold and thrust belt
 * Folies Bergère
 * Follow Me (Muse song)
 * Follow That Dream (song)
 * Follow the Drinkin' Gourd
 * Fomalhaut
 * Fomalhaut C
 * Fomalhaut b
 * Fomalhaut in fiction
 * Fon creation myth
 * Fontana (Martian crater)
 * Fontana (lunar crater)
 * Fontanelle cemetery
 * Fontenelle (crater)
 * Fonteyn (crater)
 * Foo fighter
 * Food & Fuel Pubs
 * Food chain
 * Food for the Gods
 * Footfall
 * Foothill Observatory
 * Footprint (satellite)
 * Footprints on the Moon (1969 film)
 * For All Mankind
 * For All Mankind (TV series)
 * For All Moonkind
 * For the Emperor (novel)
 * For the Man Who Has Everything
 * For the World Is Hollow and I Have Touched the Sky
 * Forbidden Planet
 * Forbidden World
 * Forbidden mechanism
 * Forbush decrease
 * Forcarei Astronomical Observatory
 * Force field (fiction)
 * Force spectroscopy
 * Force-free magnetic field
 * Forced Alliance
 * Forced Entry (1973 film)
 * Forces of Nature (TV series)
 * Ford Insomnia Response to Stress Test
 * Ford Observatory
 * Ford Prefect (character)
 * Forebulge
 * Foredune
 * Foreigner universe
 * Forel-Ule scale
 * Forensic astronomy
 * Forensic geology
 * Forensic palynology
 * Forerunner (DC Comics)
 * Foreset bed
 * Forest Ray Moulton
 * Forest floor
 * Forest floor interception
 * Forever Autumn (novel)
 * Forge (level editor)
 * Forge of Heaven
 * Forgotten Freshness Volume 4
 * Formation and evolution of the Solar System
 * Formation fluid
 * Former constellation
 * Forming gas
 * Formosat-1
 * Formosat-2
 * Formosat-5
 * Fornax
 * Fornax Cluster
 * Fornax Dwarf
 * Fornax Wall
 * Fornax in Chinese astronomy
 * Fornjot (moon)
 * Foros (crater)
 * Forrest J Ackerman
 * Forrest S. Petersen
 * Forsaken (2018 film)
 * Forschungsflugkörper
 * Forschungszentrum Jülich
 * Fort Armstrong Theatre
 * Fort Night
 * Fort St George In England
 * Fort Worth Museum of Science and History
 * Forth & Clyde Hotel
 * Fortress 2: Re-Entry
 * Fortress of Solitude
 * Fortunian
 * Forty Thousand in Gehenna
 * Fossa (planetary nomenclature)
 * Fossil (novel)
 * Fossil Record
 * Fossil hash
 * Fossil preparation
 * Fossil stellar magnetic field
 * Fossil water
 * Fossombrone Cathedral
 * Foster (crater)
 * Fotla Corona
 * Foton (satellite)
 * Foton-M No.1
 * Foton-M No.2
 * Foton-M No.4
 * Foucault (crater)
 * Foucault knife-edge test
 * Fougèrite
 * Foundered strata
 * Four Advisors
 * Four Dimensions of Greta
 * Four Moons of Darkover
 * Four Pillars of Destiny
 * Four Rooms
 * Four Symbols
 * Four continents
 * Four corners of the world
 * Four-poster bed
 * Four-stage-to-orbit
 * Four-tensor
 * Fourier (crater)
 * Fourier-transform infrared spectroscopy
 * Fourier-transform spectroscopy
 * Fournier (crater)
 * Fourth Cambridge Survey
 * Fourth International Posadist
 * Fourth principal meridian
 * Fowler (crater)
 * Fox (crater)
 * Fox Bruin Theater
 * Fox Fur Nebula
 * Fox McCloud
 * Fox Oakland Theatre
 * Fox Park Public Observatory
 * Fox Theater, Westwood Village
 * Fox Theatre (Atlanta)
 * Fox Theatre (Detroit)
 * Fox Theatre (Fullerton, California)
 * Fox Theatre (San Francisco)
 * Fox Theatre (St. Louis)
 * Fox Theatres
 * Fox and Anchor
 * Fox and Grapes, Birmingham
 * Fox and Pheasant
 * Fox-1A
 * Fox-1B
 * Fox-1Cliff
 * Fox-1D
 * Foxy Brown (film)
 * Fra Mauro (crater)
 * Fra Mauro formation
 * Fracastorius (crater)
 * Fractal cosmology
 * Fractal in soil mechanics
 * Fractional Orbital Bombardment System
 * Fractionated spacecraft
 * Fragipan
 * Fram (crater)
 * Framboid
 * Frame fields in general relativity
 * Frame of reference
 * Frame-dragging
 * Fran Bošnjaković
 * Fran Cosgrave
 * France A. Córdova
 * Frances Bagenal
 * Frances Barkley
 * Frances Faye
 * Frances Hurwitz
 * Frances Langford
 * Frances Lowater
 * Frances Northcutt
 * Francesco Barozzi
 * Francesco Bertelli
 * Francesco Bianchini
 * Francesco Capuano Di Manfredonia
 * Francesco Carlini
 * Francesco Denza
 * Francesco Fontana
 * Francesco Manca
 * Francesco Maria Grimaldi
 * Francesco Sambiasi
 * Francesco Sizzi
 * Francesco de Vico
 * Franciade
 * Francis Abbott
 * Francis Alfred Cooper
 * Francis Barker & Son
 * Francis Charles McMath
 * Francis Chichester
 * Francis Crick
 * Francis Drake
 * Francis Dunnell
 * Francis F. Chen
 * Francis Fletcher (priest)
 * Francis G. Pease
 * Francis Graham-Smith
 * Francis Grasso
 * Francis Inge
 * Francis Marion University Observatory
 * Francis Mugliston
 * Francis Nimmo
 * Francis Penrose
 * Francis Preserved Leavenworth
 * Francis Roberts (cricketer)
 * Francisca Oboh Ikuenobe
 * Francisco (moon)
 * Francisco Rubio (astronaut)
 * Franciszek Armiński
 * Franck (crater)
 * Franck Marchis
 * Franck–Condon principle
 * Franco Brambilla (illustrator)
 * Franco Malerba
 * Franco Pacini
 * Franco Rasetti
 * Francois Safieddine
 * Frangible nut
 * Frank Arthur Bellamy
 * Frank B. McDonald
 * Frank B. Zoltowski
 * Frank Bateson
 * Frank Borman
 * Frank Bradshaw Wood
 * Frank Brunner
 * Frank De Winne
 * Frank Drake
 * Frank Edwards (writer and broadcaster)
 * Frank Elmore Ross
 * Frank Frazetta
 * Frank Hagar Bigelow
 * Frank Hall (broadcaster)
 * Frank Herbert's Dune (video game)
 * Frank Hill (scientist)
 * Frank Hope-Jones
 * Frank J. Low
 * Frank J. Tipler
 * Frank John Kerr
 * Frank K. Edmondson
 * Frank Kameny
 * Frank L. Culbertson Jr.
 * Frank Malina
 * Frank McClean
 * Frank Muller (astronomer)
 * Frank Parkhurst Brackett
 * Frank Pattyn
 * Frank Phillips (cricketer)
 * Frank Pieter Israel
 * Frank Press
 * Frank R. Paul
 * Frank Schlesinger
 * Frank Scott Hogg
 * Frank Scully
 * Frank Shu
 * Frank Skjellerup
 * Frank T. M. White
 * Frank Walls
 * Frank Washington Very
 * Frank Winkler
 * Frank Wu (artist)
 * Frankenhooker
 * Frankenstein Meets the Space Monster
 * Frankie Bones
 * Frankie Knuckles
 * Franklin (crater)
 * Franklin Chang Díaz
 * Franklin E. Roach
 * Franklin Institute
 * Franklin J. Schaffner
 * Franklin Ruehl
 * Frano Kršinić (biologist)
 * Frans Pretorius
 * Frans Tengnagel
 * František Nušl
 * Franz (crater)
 * Franz Boll (philologist)
 * Franz Brünnow
 * Franz Daniel Kahn
 * Franz Halberg
 * Franz Joseph (artist)
 * Franz Kaiser
 * Franz Rottensteiner
 * Franz Viehböck
 * Franz Xaver von Zach
 * Franz de Paula Triesnecker
 * Franz von Gruithuisen
 * François Bouchet
 * François Bourgeon
 * François Folie
 * François Forget
 * François Gonnessiat
 * François J. Terby
 * François Wesemael
 * Françoise Combes
 * Françoise Gasse
 * Frasca International
 * Frascati Tokamak Upgrade
 * Fraser Lowland
 * Frauengefängnis
 * Fraunhofer (crater)
 * Fraunhofer diffraction
 * Fraunhofer diffraction equation
 * Fraunhofer distance
 * Fraunhofer lines
 * Frazil ice
 * Freaky Deaky Music Festival
 * Fred 2: Night of the Living Fred
 * Fred Adams
 * Fred Buck
 * Fred Espenak
 * Fred Ford (programmer)
 * Fred Haise
 * Fred Hoyle
 * Fred Lawrence Whipple
 * Fred Lawrence Whipple Observatory
 * Fred M. Wilcox (director)
 * Fred Moore (soldier)
 * Fred Patten
 * Fred Singer
 * Fred W. Turek
 * Fred Watson
 * Fred the Godson
 * Freddy Bastone
 * Freddy Krueger
 * Frede (cabaret manager)
 * Frederica Perera
 * Frederick Ackerley
 * Frederick Atwood Greeley
 * Frederick Brundrett
 * Frederick C. Durant
 * Frederick C. Leonard
 * Frederick D. Gregory
 * Frederick G. Keyes
 * Frederick Hanley Seares
 * Frederick Hauck
 * Frederick James Hargreaves
 * Frederick Larson (filmmaker)
 * Frederick Lugard, 1st Baron Lugard
 * Frederick Pilcher
 * Frederick Simpson (historian)
 * Frederick Slocum
 * Frederick Sumner Brackett
 * Frederick Turner (poet)
 * Frederick W. Leslie
 * Frederick W. Sturckow
 * Frederick de Houtman
 * Frederik Kaiser
 * Frederik Pohl
 * Fredholm (crater)
 * Fredric Jameson
 * Fredrik Johan Wiik
 * Free Amazons of Darkover
 * Free Four
 * Free drift
 * Free fall
 * Free streaming
 * Free, White and 21
 * Free-air gravity anomaly
 * Free-fall time
 * Free-return trajectory
 * Free-running sleep
 * Free-space optical communication
 * FreeFlyer
 * FreeSpace 2
 * Freedom Planet
 * Freedom Project
 * Freelancer (video game)
 * Freeman Dyson
 * Freeman law
 * Freenex
 * Freestar experiment
 * Freeway (1996 film)
 * Freeway II: Confessions of a Trickbaby
 * Freeze-dried ice cream
 * Fregat
 * Frege's puzzles
 * Freimut Börngen
 * Freja (satellite)
 * Fremen
 * French Geodesic Mission
 * French Geodesic Mission to Lapland
 * French Republican calendar
 * French ship Monge
 * French space program
 * Frento Vallis
 * Frequency (gene)
 * Frequency comb
 * Frequency domain sensor
 * Frequency separation
 * Frequency-Agile Solar Radiotelescope
 * Frequent flyer program (Guantanamo)
 * Fresh water
 * Freshet
 * Freshwater acidification
 * Freshwater ecosystem
 * Freshwater environmental quality parameters
 * Freshwater marsh
 * Fresnel (unit)
 * Fresnel Imager
 * Fresnel diffraction
 * Fresnel equations
 * Fresnel number
 * Fresnel rhomb
 * Fresnel zone
 * Fresnel–Arago laws
 * Fresno scraper
 * Fretted terrain
 * Freud (crater)
 * Freundlich (crater)
 * Freund–Rubin compactification
 * Friability
 * Frida Palmer
 * Friday Foster (film)
 * Friday Night! with Ralph Benmergui
 * Friday the 13th: Killer Puzzle
 * Fridman (crater)
 * Fried Egg structure
 * Fried parameter
 * Friede
 * Friedmann Prize
 * Friedmann equations
 * Friedmann–Lemaître–Robertson–Walker metric
 * Friedrich August Theodor Winnecke
 * Friedrich Bernhard Gottfried Nicolai
 * Friedrich Bessel
 * Friedrich Georg Wilhelm von Struve
 * Friedrich Hayn
 * Friedrich Karl Arnold Schwassmann
 * Friedrich Karl Ginzel
 * Friedrich Schmiedl
 * Friedrich Simon Archenhold
 * Friedrich Tietjen
 * Friedrich Wilhelm Argelander
 * Friedrich Wilhelm Opelt
 * Friedrich Zander
 * Friedrich von Hahn
 * Friedrich-Karl Thielemann
 * Friendly Floatees
 * Friends (1971 film)
 * Friends of Amateur Rocketry
 * Frigg
 * Fright Nights
 * Fright to the Finish
 * Frightful Cave
 * Frimaire
 * Frisky Dingo
 * Fritz Cohn
 * Fritz Goos
 * Fritz Gosslau
 * Fritz Grünbaum
 * Fritz Lang
 * Fritz Leiber
 * Fritz Mueller
 * Fritz Müller (glaciologist)
 * Fritz Zwicky
 * Fritz Zwicky Prize for Astrophysics and Cosmology
 * Froelich (crater)
 * From Eternity to Here
 * From Fishing Hamlet To Red Planet
 * From the Earth to the Moon
 * From the Earth to the Moon (film)
 * From the Earth to the Moon (miniseries)
 * Front-end Robotics Enabling Near-term Demonstration
 * Frontier (supercomputer)
 * Frontier in Space
 * Frontier: Elite II
 * Frontier: First Encounters
 * Frontiers in Ecology and the Environment
 * Frontiers of Biogeography
 * Frost (crater)
 * Frost flower
 * Frost flower (sea ice)
 * Frost heaving
 * Frost line
 * Frost line (astrophysics)
 * Frostbiter: Wrath of the Wendigo
 * Frostwork
 * Frosty Drew Observatory
 * Frosty Leo Nebula
 * Frozen orbit
 * Frozen star (hypothetical star)
 * Fructidor
 * Fruit Flyer
 * Fry and Leela's Big Fling
 * Fryxell (crater)
 * Fräulein Devil
 * Frère Jacques
 * Frédéric Sy
 * Fuchs Medal
 * Fuego (1969 film)
 * Fugacity capacity
 * Fuji (spacecraft)
 * Fuji (train)
 * Fuk Li
 * Fukang meteorite
 * Fulgurite
 * Full Bars
 * Full moon
 * Full pond
 * Full spectral imaging
 * Full-sky Astrometric Mapping Explorer
 * Fulldome
 * Fulldome Database
 * Fuller (crater)
 * Fuller's earth
 * Fulmar (rocket)
 * Fulvic acid
 * Fulvio Melia
 * Fumiaki Uto
 * Fun (film)
 * Fun Size
 * Fun and Games (1971 film)
 * Functional magnetic resonance spectroscopy of the brain
 * Functional response
 * Fund for UFO Research
 * Fundamental Astronomy
 * Fundamental ephemeris
 * Fundamental plane (elliptical galaxies)
 * Fundamental plane (spherical coordinates)
 * Fundamental series
 * Fundamental station
 * Fundamentals of Stack Gas Dispersion
 * Fundus (seabed)
 * Fungal loop hypothesis
 * Funginite
 * Funkmaster Flex
 * Funkstar De Luxe
 * Funny Girls
 * Furi
 * Furipteridae
 * Furnerius (crater)
 * Furuhjelm 46
 * Furuno
 * Fury (DC Comics)
 * Fury (Star Trek: Voyager)
 * Furylfuramide
 * Fusain
 * Fusion (Eclipse Comics)
 * Fusion energy gain factor
 * Fusion power
 * Fusion rocket
 * Fusor
 * Fusor (astronomy)
 * Futabatei (crater)
 * Futon
 * Futon dryer
 * Futurama (video game)
 * Futurama: Into the Wild Green Yonder
 * Futurama: Worlds of Tomorrow
 * Future Combat Air System
 * Future Echoes
 * Future Launchers Preparatory Programme
 * Future Tense (Star Trek: Enterprise)
 * Future War 198X
 * Future of Earth
 * Future of Marine Animal Populations
 * Future of an expanding universe
 * Future of space exploration
 * Future's End
 * Futurians
 * Fuwa
 * Fuzion Frenzy 2
 * Fuzzball (string theory)
 * Fuzzy cold dark matter
 * Fyodor Ivanovich Tolstoy
 * Fyodor Luzhin
 * Fyodor Yurchikhin
 * Fábrica de Arte Cubano
 * Fátima de Madrid
 * Fédération Aéronautique Internationale
 * Féerie (Moulin Rouge)
 * Félicette
 * Félix Aguilar Observatory
 * Félix Amiot
 * Félix Soto Toro
 * Félix de Roy
 * Fényi (crater)
 * Fêtes de Genève
 * Földtani Közlöny
 * Förster resonance energy transfer
 * G 117-B15A
 * G 185-32
 * G 196-3
 * G 240-72
 * G 29-38
 * G 9-38
 * G 99-47
 * G Aquarii
 * G Carinae
 * G Centauri
 * G Scorpii
 * G-Darius
 * G-Nome
 * G-Saviour
 * G-force
 * G-jitter
 * G-strain
 * G-type asteroid
 * G-type main-sequence star
 * G. Bond (crater)
 * G. C. Anupama
 * G. David Low
 * G. David Tilman
 * G. Evelyn Hutchinson Award
 * G. Harry Stine
 * G. K. Gilbert Award
 * G. K. Warren Prize
 * G. Michael Bancroft
 * G. Michael Purdy
 * G. Scott Hubbard
 * G. Srinivasan (physicist)
 * G. William Domhoff
 * G.I. Joe: Retaliation
 * G.O.R.A.
 * G1.9+0.3
 * G292.0+01.8
 * G350.1-0.3
 * GA Drilling
 * GADGET
 * GALEX
 * GALEX Arecibo SDSS Survey
 * GALLEX
 * GAMA202627
 * GAMESS (UK)
 * GAMMA
 * GCIRS 13E
 * GCIRS 16SW
 * GCIRS 7
 * GCIRS 8*
 * GCRT J1745−3009
 * GCl 38
 * GD 165
 * GD 356
 * GD 358
 * GD 362
 * GD 40
 * GD 61
 * GD 66
 * GDC Observatory
 * GEIPAN
 * GEISA
 * GEO Imaging Satellite
 * GEO-LEO
 * GEO-Mobile Radio Interface
 * GEO600
 * GEOBASE
 * GEOS-3
 * GEOStar
 * GEOStar-1
 * GEOStar-2
 * GEOStar-3
 * GEOVIA
 * GEWI
 * GF method
 * GFAJ-1
 * GG Tauri
 * GGSE-1
 * GHP formalism
 * GIOVE
 * GIS and hydrology
 * GIScience & Remote Sensing
 * GJ 1005
 * GJ 1128
 * GJ 1151
 * GJ 1245
 * GJ 3379
 * GJ 3512
 * GJ 357 d
 * GJ 3991
 * GJ 526
 * GJ 625
 * GJ 9827
 * GK Persei
 * GL Virginis
 * GLIMPSE Project
 * GLONASS
 * GLONASS (first-generation satellites)
 * GLONASS-K
 * GLONASS-K2
 * GME of Deutscher Wetterdienst
 * GMOSAIC
 * GN-108036
 * GN-z11
 * GNS Science
 * GNSS applications
 * GNSS augmentation
 * GNSS enhancement
 * GNSS positioning calculation
 * GNSS reflectometry
 * GNSS software-defined receiver
 * GO Navigator
 * GO Searcher
 * GO-ESSP
 * GOES 1
 * GOES 10
 * GOES 11
 * GOES 12
 * GOES 13
 * GOES 14
 * GOES 15
 * GOES 2
 * GOES 3
 * GOES 4
 * GOES 5
 * GOES 6
 * GOES 7
 * GOES 8
 * GOES 9
 * GOES-16
 * GOES-17
 * GOES-G
 * GOES-T
 * GOES-U
 * GOODS-N-774
 * GP Andromedae
 * GPHS-RTG
 * GPS Block IIF
 * GPS Block III
 * GPS Block IIIF
 * GPS Exchange Format
 * GPS IIR-1
 * GPS Week Number Rollover
 * GPS aircraft tracking
 * GPS buoy
 * GPS drawing
 * GPS for the visually impaired
 * GPS in the earthmoving industry
 * GPS intelligent buoys
 * GPS meteorology
 * GPS puck
 * GPS satellite blocks
 * GPS signals
 * GPS tracking unit
 * GPS watch
 * GPS wildlife tracking
 * GPS-aided GEO augmented navigation
 * GPS2SMS
 * GPSBabel
 * GPS·C
 * GQ Lupi
 * GQ Lupi b
 * GQ Muscae
 * GQM-163 Coyote
 * GR 8
 * GR Andromedae
 * GR Muscae
 * GRACE and GRACE-FO
 * GRAIL
 * GRAIL MoonKAM
 * GRAPES-3
 * GRASS GIS
 * GRB 000131
 * GRB 011211
 * GRB 020813
 * GRB 030329
 * GRB 031203
 * GRB 050509B
 * GRB 050709
 * GRB 050904
 * GRB 051221A
 * GRB 060218
 * GRB 060614
 * GRB 060729
 * GRB 070125
 * GRB 070714B
 * GRB 080319B
 * GRB 080913
 * GRB 080916C
 * GRB 090423
 * GRB 090429B
 * GRB 100621A
 * GRB 101225A
 * GRB 110328A
 * GRB 111209A
 * GRB 130427A
 * GRB 150101B
 * GRB 160625B
 * GRB 190114C
 * GRB 790305b
 * GRB 830801
 * GRB 970228
 * GRB 970508
 * GRB 971214
 * GRB 980425
 * GRB 990123
 * GREGOR Solar Telescope
 * GRENOUILLE
 * GRO J0422+32
 * GRO J1655-40
 * GRO J1719-24
 * GROVER
 * GRS 1124-683
 * GRS 1915+105
 * GRTensorII
 * GRW +70 8247
 * GS 2000+25
 * GS formalism
 * GSAT-1
 * GSAT-10
 * GSAT-11
 * GSAT-12
 * GSAT-14
 * GSAT-15
 * GSAT-16
 * GSAT-17
 * GSAT-18
 * GSAT-19
 * GSAT-2
 * GSAT-20
 * GSAT-29
 * GSAT-3
 * GSAT-30
 * GSAT-31
 * GSAT-4
 * GSAT-5P
 * GSAT-6A
 * GSAT-7
 * GSAT-7A
 * GSAT-7R
 * GSAT-8
 * GSC 02620-00648
 * GSC 02652-01324
 * GSC 03089-00929
 * GSC 03549-02811
 * GSC 03949-00967
 * GSI3D
 * GSO projection
 * GSSHA
 * GU Piscium
 * GU Piscium b
 * GURPS Alpha Centauri
 * GURPS Infinite Worlds
 * GUSTO (telescope)
 * GW 123.4-1.5
 * GW Orionis
 * GW151226
 * GW170104
 * GW170608
 * GW170814
 * GW170817
 * GW190412
 * GW190521
 * GW190814
 * GX 339-4
 * GX Velorum
 * GY Andromedae
 * GYRO
 * GZ Velorum
 * Gabala Radar Station
 * Gabriel Green
 * Gabriel Köerner
 * Gabriel Rothblatt
 * Gabriela González
 * Gabriele Cattani
 * Gabrielle Harbowy
 * Gabrielle Renaudot Flammarion
 * Gacrux
 * Gadomski (crater)
 * Gaea (crater)
 * Gaea trilogy
 * Gaean Reach
 * Gaetano Crocco
 * Gaganyaan
 * Gagarin (crater)
 * Gagarin's Start
 * Gagarin: First in Space
 * Gaia (spacecraft)
 * Gaia 1
 * Gaia Archive
 * Gaia Sausage
 * Gaia hypothesis
 * Gaia16aye
 * Gaian Greens
 * Gaiety Theater (Manila)
 * Gailard Sartain
 * Gainsborough (crater)
 * Gaisser–Hillas function
 * Gal (unit)
 * Gal4 transcription factor
 * Galactic Adventures
 * Galactic Bridges and Tails
 * Galactic Center
 * Galactic Center GeV Excess
 * Galactic Chase
 * Galactic Civilizations
 * Galactic Civilizations II: Dark Avatar
 * Galactic Civilizations II: Dread Lords
 * Galactic Civilizations II: Twilight of the Arnor
 * Galactic Civilizations III
 * Galactic Command
 * Galactic Emission Mapping
 * Galactic Empire (series)
 * Galactic Energy
 * Galactic Junk League
 * Galactic Patrol
 * Galactic Patrol (novel)
 * Galactic Pot-Healer
 * Galactic Radiation and Background
 * Galactic Suite Design
 * Galactic Trader
 * Galactic Warrior Rats
 * Galactic anticenter
 * Galactic astronomy
 * Galactic bulge
 * Galactic coordinate system
 * Galactic corona
 * Galactic disc
 * Galactic habitable zone
 * Galactic halo
 * Galactic orientation
 * Galactic plane
 * Galactic quadrant
 * Galactic ridge
 * Galactic superwind
 * Galactic tide
 * Galactic year
 * Galactica 1980
 * Galactocentric distance
 * Galactocentrism
 * Galactus Jack
 * Galaga
 * Galaga '88
 * Galaga '91
 * Galaga 30th Collection
 * Galaga Legions
 * Galaga Legions DX
 * Galaga Remix
 * Galaga: Destination Earth
 * Galatea (moon)
 * Galaxian
 * Galaxian 2
 * Galaxian3: Project Dragoon
 * Galaxias Fossae
 * Galaxies in fiction
 * Galaxiki
 * Galaxina
 * Galaxius Mons
 * Galaxy
 * Galaxy (spacecraft)
 * Galaxy (video game)
 * Galaxy 1
 * Galaxy 10R
 * Galaxy 11
 * Galaxy 15
 * Galaxy 17
 * Galaxy 18
 * Galaxy 19
 * Galaxy 23
 * Galaxy 25
 * Galaxy 26
 * Galaxy 27
 * Galaxy 28
 * Galaxy 3C
 * Galaxy 4R
 * Galaxy 5
 * Galaxy 9
 * Galaxy And Mass Assembly survey
 * Galaxy Cluster IDCS 1426
 * Galaxy Express 999
 * Galaxy Express Corporation
 * Galaxy Force
 * Galaxy Game
 * Galaxy H-Alpha Fabry-Perot System
 * Galaxy IV
 * Galaxy Invader
 * Galaxy On Fire 2
 * Galaxy Quest
 * Galaxy X (galaxy)
 * Galaxy Zoo
 * Galaxy cluster
 * Galaxy color–magnitude diagram
 * Galaxy filament
 * Galaxy formation and evolution
 * Galaxy group
 * Galaxy groups and clusters
 * Galaxy merger
 * Galaxy morphological classification
 * Galaxy of Fear
 * Galaxy of Terror
 * Galaxy rotation curve
 * Galaxyland
 * Galberos
 * Galdakao (crater)
 * Galdieria sulphuraria
 * Gale (crater)
 * Gale Bruno van Albada
 * Galen (crater)
 * Galenki RT-70 radio telescope
 * Galician Massif
 * Galilaei (Martian crater)
 * Galilaei (lunar crater)
 * Galilean invariance
 * Galilean moons
 * Galileo (satellite navigation)
 * Galileo (spacecraft)
 * Galileo Galilei
 * Galileo Galilei Planetarium
 * Galileo National Telescope
 * Galileo Probe
 * Galileo Regio
 * Galileo affair
 * Galileo's Daughter
 * Galileo's Dream
 * Galileo's Leaning Tower of Pisa experiment
 * Galileo's escapement
 * Galileo's paradox
 * GalileoMobile
 * Galileoscope
 * Galina Khitrova
 * Galle (Martian crater)
 * Galle (lunar crater)
 * Gallic epoch
 * Gallifrey Macula
 * Galloping Galaxies!
 * Galloway Forest Park
 * Gallus (constellation)
 * Galois (crater)
 * Gals (satellite)
 * Galvani (crater)
 * Gambart (crater)
 * Gambian slit-faced bat
 * Gambling with Souls
 * Game Over II
 * Game Show Models
 * Gameplay of Eve Online
 * Gamera vs. Guiron
 * Gamera vs. Viras
 * Gamera vs. Zigra
 * Gamera: Super Monster
 * Gamma (eclipse)
 * Gamma (satellite)
 * Gamma Andromedae
 * Gamma Apodis
 * Gamma Aquarii
 * Gamma Aquilae
 * Gamma Arae
 * Gamma Arietis
 * Gamma Boötis
 * Gamma Caeli
 * Gamma Camelopardalis
 * Gamma Cancri
 * Gamma Canis Majoris
 * Gamma Canis Minoris
 * Gamma Capricorni
 * Gamma Cassiopeiae
 * Gamma Cassiopeiae variable
 * Gamma Centauri
 * Gamma Cephei
 * Gamma Cephei Ab
 * Gamma Ceti
 * Gamma Chamaeleontis
 * Gamma Circini
 * Gamma Columbae
 * Gamma Comae Berenices
 * Gamma Coronae Australis
 * Gamma Coronae Borealis
 * Gamma Corvi
 * Gamma Crateris
 * Gamma Cygni
 * Gamma Delphini
 * Gamma Doradus
 * Gamma Draconis
 * Gamma Equulei
 * Gamma Eridani
 * Gamma Fornacis
 * Gamma Geminorum
 * Gamma Gruis
 * Gamma Herculis
 * Gamma Horologii
 * Gamma Hydrae
 * Gamma Hydri
 * Gamma Leonis
 * Gamma Leonis b
 * Gamma Leporis
 * Gamma Librae
 * Gamma Lupi
 * Gamma Lyrae
 * Gamma Mensae
 * Gamma Microscopii
 * Gamma Monocerotis
 * Gamma Muscae
 * Gamma Normae
 * Gamma Normids
 * Gamma Octantis
 * Gamma Ophiuchi
 * Gamma Pavonis
 * Gamma Pegasi
 * Gamma Persei
 * Gamma Phoenicis
 * Gamma Pictoris
 * Gamma Piscis Austrini
 * Gamma Piscium
 * Gamma Pyxidis
 * Gamma Ray Spectrometer (2001 Mars Odyssey)
 * Gamma Reticuli
 * Gamma Sagittae
 * Gamma Sagittarii
 * Gamma Sculptoris
 * Gamma Scuti
 * Gamma Serpentis
 * Gamma Sextantis
 * Gamma Tauri
 * Gamma Trianguli
 * Gamma Trianguli Australis
 * Gamma Tucanae
 * Gamma Ursae Majoris
 * Gamma Ursae Minoris
 * Gamma Velorum
 * Gamma Virginis
 * Gamma Volantis
 * Gamma spectroscopy
 * Gamma-Hydroxyvaleric acid
 * Gamma-Ray Burst Optical/Near-Infrared Detector
 * Gamma-Ray Imaging Spectrometer
 * Gamma-Valerolactone
 * Gamma-ray Burst Coordinates Network
 * Gamma-ray astronomy
 * Gamma-ray burst
 * Gamma-ray burst emission mechanisms
 * Gamma-ray burst precursor
 * Gamma-ray burst progenitors
 * Gamma-ray spectrometer
 * Gamma1 Caeli
 * Gamma1 Fornacis
 * Gamma1 Normae
 * Gamma1 Octantis
 * Gamma2 Fornacis
 * Gamma2 Normae
 * Gamma2 Sagittarii
 * Gammasphere
 * Gamow (crater)
 * Gan De
 * Ganapathi Thanikaimoni
 * Gancedo (meteorite)
 * Gandahar (film)
 * Gandang Gabi, Vice!
 * Gandanta
 * Ganesa Macula
 * Ganesar Chanmugam
 * Ganges Chasma
 * Ganges Mensa
 * Ganis Chasma
 * Ganita-yukti-bhasa
 * Ganja & Hess
 * Ganskiy (crater)
 * Ganswindt (crater)
 * Ganymede (moon)
 * Ganymede City
 * Gao Xing
 * Gaocheng Astronomical Observatory
 * Gaofen (satellite)
 * Gaofen 1
 * Gao–Guenie meteorite
 * Gap (landform)
 * Gaplus
 * Garatéa-L
 * Garavito (crater)
 * Garbhadhan (astrology)
 * Garden State Plaza
 * Garden Theater
 * Garden of Allah (cabaret)
 * Garden pond
 * Gardens of the Sun
 * Gardner (crater)
 * Gardner Dozois
 * Gardner Soule
 * Gardnos crater
 * Gardon gauge
 * Gareth Edwards (director)
 * Gareth V. Williams
 * Garfield's Halloween Adventure
 * Garga Hora
 * Garmin
 * Garmin Forerunner
 * Garmin G1000
 * Garmin G3000
 * Garmin iQue
 * Garni (crater)
 * Garrett P. Serviss
 * Garrett Reisman
 * Gart Westerhout
 * Garuda 1
 * Gary A. Wegner
 * Gary D.
 * Gary E. Martin
 * Gary Fildes
 * Gary Freeman (illustrator)
 * Gary Hinshaw
 * Gary Hudson (engineer)
 * Gary Hug
 * Gary K. Wolfe
 * Gary King (politician)
 * Gary Larson's Tales from the Far Side
 * Gary Lawyer
 * Gary Michael Berman
 * Gary Payton (astronaut)
 * Gary Ruddell
 * Gary Steigman
 * Gary W. Kronk
 * Gary Westfahl
 * Gary Whitta
 * Gas
 * Gas Dynamic Trap
 * Gas chamber
 * Gas chromatography–vacuum ultraviolet spectroscopy
 * Gas composition
 * Gas electron diffraction
 * Gas exchange
 * Gas explosion
 * Gas focusing
 * Gas generator
 * Gas giant
 * Gas hydrate pingo
 * Gas in scattering media absorption spectroscopy
 * Gas leak
 * Gas metal arc welding
 * Gas thermometer
 * Gas torus
 * Gas tungsten arc welding
 * Gas-discharge lamp
 * Gas-generator cycle
 * Gasa (crater)
 * Gaskiers glaciation
 * Gasochromism
 * Gasparo Berti
 * Gassendi (crater)
 * Gastre Fault
 * Gastropub
 * Gat (landform)
 * Gat Decor
 * Gate (novel series)
 * Gate Keepers
 * Gatecon
 * Gatecrasher One
 * Gates of Zendocon
 * Gateway (comics)
 * Gateway (novel)
 * Gateway (video game)
 * Gateway Galactic
 * Gateway II: Homeworld
 * Gateway Logistics Services
 * Gatineau Satellite Station
 * Gattini-IR
 * Gatun structure
 * Gaudibert (crater)
 * Gaudí (crater)
 * Gauge gravitation theory
 * Gauge theory gravity
 * Gauge vector–tensor gravity
 * Gauged supergravity
 * Gaugino
 * Gaugino condensation
 * Gauguin (crater)
 * Gauhati Cine Club
 * Gaunt factor
 * Gaunt's Ghosts
 * Gaurabda
 * Gauribidanur Radio Observatory
 * Gauricus (crater)
 * Gauss (crater)
 * Gauss's Pythagorean right triangle proposal
 * Gauss's law for gravity
 * Gauss's law for magnetism
 * Gauss's method
 * Gauss-Matuyama reversal
 * Gaussian broadening
 * Gaussian polar coordinates
 * Gaussian year
 * Gauss–Bonnet gravity
 * Gautama Siddha
 * Gavdos
 * Gavi Gangadhareshwara Temple
 * Gavin Schmidt
 * Gavriil Adrianovich Tikhov
 * Gavrilov (crater)
 * Gay Byrne
 * Gay Gulch meteorite
 * Gay bar
 * Gay-Lussac (crater)
 * Gayniggers from Outer Space
 * Gazprom Space Systems
 * Gdańsk astronomical clock
 * Gears 5
 * Gears Pop
 * Gears Tactics
 * Gears of War
 * Gears of War (video game)
 * Gears of War 2
 * Gears of War 3
 * Gears of War 4
 * Gears of War: Judgment
 * Gebel Kamil (meteorite)
 * Geber (crater)
 * Gebrinius
 * Geddes (crater)
 * Geddy Lee
 * Geert Hoste
 * Gefion family
 * Gegenschein
 * Geiger (crater)
 * Geiger tube telescope
 * Geiger–Müller tube
 * Geissler (crater)
 * Geissler tube
 * Gekko Observatory
 * Gelidibacter algens
 * Gelifluction
 * Gelisol
 * Gellio Sasceride
 * Gelria (bacterium)
 * Geminga
 * Gemini (astrology)
 * Gemini (constellation)
 * Gemini 1
 * Gemini 10
 * Gemini 11
 * Gemini 12
 * Gemini 2
 * Gemini 3
 * Gemini 4
 * Gemini 5
 * Gemini 6A
 * Gemini 7
 * Gemini 8
 * Gemini 9A
 * Gemini Docking Mechanism
 * Gemini Guidance Computer
 * Gemini Observatory
 * Gemini Planet Imager
 * Gemini SC-2
 * Gemini Wars
 * Gemini in Chinese astronomy
 * Gemini space suit
 * Geminiano Montanari
 * Geminids
 * Geminus (crater)
 * Gemma Frisius (crater)
 * Gemma Lavender
 * Gems & Gemology
 * GenGIS
 * Gena (crater)
 * Gene Cernan
 * Gene DeWeese
 * Gene Evans (pyrotechnician)
 * Gene F. Franklin
 * Gene Kranz
 * Gene Porter Bridwell
 * Gene Roddenberry
 * Gene Simmons
 * GeneSat-1
 * General (train)
 * General Atomics Avenger
 * General Atomics MQ-1 Predator
 * General Atomics MQ-9 Reaper
 * General Bathymetric Chart of the Oceans
 * General Catalogue of Stellar Radial Velocities
 * General Catalogue of Variable Stars
 * General Dynamics Nexus
 * General Fusion
 * General Mission Analysis Tool
 * General Motors Ultralite
 * General Organization of Remote Sensing
 * General Relativity (book)
 * General Relativity and Gravitation
 * General Satellite Control Center
 * General antiparticle spectrometer
 * General catalogue
 * General circulation model
 * General covariance
 * General covariant transformations
 * General levelling of France
 * General relativity
 * General-purpose heat source
 * Generalised likelihood uncertainty estimation
 * Generalized Environmental Modeling System for Surfacewaters
 * Generation Orbit Launch Services
 * Generation Orbit X-60
 * Generation ship
 * Generational planet
 * Generations Lost
 * Generic Mapping Tools
 * Generic object of dark energy
 * Genesis (spacecraft)
 * Genesis I
 * Genesis II
 * Genesis II (film)
 * Genesis Rock
 * Genesis creation narrative
 * Genetic Drift (video game)
 * Geneva Extrasolar Planet Search
 * Geneva Observatory
 * Genius by Stephen Hawking
 * Gennadi Strekalov
 * Gennadiy Borisov
 * Gennady Chibisov
 * Gennady Padalka
 * Gennady Potapenko
 * Gennady S. Bisnovatyi-Kogan
 * Gennady Samokhin
 * Gennady Sarafanov
 * Gentamicin
 * Gentlemen Prefer Nature Girls
 * Geo Da Silva
 * Geo-Force
 * Geo-IK-2
 * Geo-Informatics and Space Technology Development Agency
 * Geo-blocking
 * Geo-fence
 * Geo-fence warrant
 * GeoArabia
 * GeoEye
 * GeoEye-1
 * GeoJournal
 * GeoModeller
 * GeoPlanet
 * GeoRef
 * GeoSciML
 * GeoSpy
 * GeoTIFF
 * GeoTime
 * Geoarchaeology
 * Geobacillus thermoglucosidasius
 * Geobiology
 * Geobiology (journal)
 * Geocaching
 * Geocarto International
 * Geocentric Coordinate Time
 * Geocentric model
 * Geocentric orbit
 * Geochemical Ocean Sections Study
 * Geochemical Perspectives Letters
 * Geochemistry
 * Geochimica et Cosmochimica Acta
 * Geochronology
 * Geocoin
 * Geocorona
 * Geode
 * Geodesic grid
 * Geodesics in general relativity
 * Geodesium
 * Geodetic Observatory Wettzell
 * Geodetic astronomy
 * Geodetic datum
 * Geodetic effect
 * Geodispersal
 * Geodiversity
 * Geodynamics of Venus
 * Geodynamics of terrestrial exoplanets
 * Geoethics
 * Geoff Murphy
 * Geoff Tootill
 * Geoffrey A. Landis
 * Geoffrey Burbidge
 * Geoffrey Davies (cricketer)
 * Geoffrey Kirk
 * Geoffrey Marcy
 * Geoffrey Marsland
 * Geoffrey Notkin
 * Geoffrey Pardoe
 * Geoffrey Perry
 * Geoffrey Plumpton Wilson
 * Geoforecasting
 * Geoforum
 * Geofoto
 * Geofísica Internacional
 * Geogemma
 * Geoglobus
 * Geografiska Annaler
 * Geograph Seal
 * Geographers' A-Z Map Company
 * Geographia Polonica
 * Geographic Data Files
 * Geographic coordinate system
 * Geographic routing
 * Geographical Analysis (journal)
 * Geographical Association
 * Geographical Review
 * Geographical distance
 * Geographical pole
 * Geographical zone
 * Geographische Zeitschrift
 * Geography
 * Geography of Halloween
 * Geography of Mars
 * Geography of Pluto
 * Geography of the Alps
 * Geohashing
 * Geohazard
 * Geoheritage
 * Geoid
 * Geoinformatics
 * Geokrety
 * Geolocation Privacy and Surveillance Act
 * Geologic Calendar
 * Geologic hazards
 * Geologic modelling
 * Geologic overpressure
 * Geologic province
 * Geologic record
 * Geologic time scale
 * Geologic timeline of Western North America
 * Geologica Acta
 * Geologica Belgica
 * Geologica Carpathica
 * Geological Conservation Review
 * Geological Curators' Group
 * Geological Exploration of the Fortieth Parallel
 * Geological Journal
 * Geological Magazine
 * Geological Society of America Bulletin
 * Geological Society of India
 * Geological Society of South Africa
 * Geological Strength Index
 * Geological Survey of Denmark and Greenland
 * Geological Survey of Ireland
 * Geological Survey of Pakistan
 * Geological formation
 * Geological history of Earth
 * Geological history of Mars
 * Geological history of oxygen
 * Geological period
 * Geological resistance
 * Geological survey
 * Geologist
 * Geologists' Association
 * Geology
 * Geology (journal)
 * Geology Today
 * Geology applications of Fourier transform infrared spectroscopy
 * Geology of Abkhazia
 * Geology of Afghanistan
 * Geology of Africa
 * Geology of Albania
 * Geology of Alderney
 * Geology of Algeria
 * Geology of Andorra
 * Geology of Angola
 * Geology of Anguilla
 * Geology of Antigua and Barbuda
 * Geology of Argentina
 * Geology of Armenia
 * Geology of Aruba
 * Geology of Ascension Island
 * Geology of Australia
 * Geology of Austria
 * Geology of Azerbaijan
 * Geology of Bahrain
 * Geology of Bangladesh
 * Geology of Barbados
 * Geology of Belarus
 * Geology of Belgium
 * Geology of Bermuda
 * Geology of Bhutan
 * Geology of Bolivia
 * Geology of Bonaire
 * Geology of Bosnia and Herzegovina
 * Geology of Botswana
 * Geology of Brazil
 * Geology of Brunei
 * Geology of Bulgaria
 * Geology of Cambodia
 * Geology of Cameroon
 * Geology of Canada
 * Geology of Cape Verde
 * Geology of Ceres
 * Geology of Chad
 * Geology of Charon
 * Geology of Chile
 * Geology of China
 * Geology of Christmas Island
 * Geology of Colombia
 * Geology of Costa Rica
 * Geology of Croatia
 * Geology of Cuba
 * Geology of Curaçao
 * Geology of Cyprus
 * Geology of Denmark
 * Geology of Dominica
 * Geology of East Timor
 * Geology of Ecuador
 * Geology of Egypt
 * Geology of El Salvador
 * Geology of Eritrea
 * Geology of Estonia
 * Geology of Eswatini
 * Geology of Finland
 * Geology of France
 * Geology of French Guiana
 * Geology of Gabon
 * Geology of Georgia (country)
 * Geology of Germany
 * Geology of Ghana
 * Geology of Great Britain
 * Geology of Greece
 * Geology of Greenland
 * Geology of Grenada
 * Geology of Guatemala
 * Geology of Guernsey
 * Geology of Guinea
 * Geology of Guinea-Bissau
 * Geology of Guyana
 * Geology of Haiti
 * Geology of Honduras
 * Geology of Hong Kong
 * Geology of Iceland
 * Geology of India
 * Geology of Indonesia
 * Geology of Iran
 * Geology of Iraq
 * Geology of Israel
 * Geology of Italy
 * Geology of Ivory Coast
 * Geology of Jan Mayen
 * Geology of Japan
 * Geology of Jersey
 * Geology of Jordan
 * Geology of Kazakhstan
 * Geology of Kosovo
 * Geology of Kuwait
 * Geology of Kyrgyzstan
 * Geology of Laos
 * Geology of Latvia
 * Geology of Lebanon
 * Geology of Lesotho
 * Geology of Liberia
 * Geology of Libya
 * Geology of Liechtenstein
 * Geology of Lithuania
 * Geology of Luxembourg
 * Geology of Macau
 * Geology of Madagascar
 * Geology of Malawi
 * Geology of Mars
 * Geology of Martinique
 * Geology of Mauritania
 * Geology of Mauritius
 * Geology of Mercury
 * Geology of Moldova
 * Geology of Monaco
 * Geology of Mongolia
 * Geology of Montenegro
 * Geology of Montserrat
 * Geology of Morocco
 * Geology of Mozambique
 * Geology of Nauru
 * Geology of Nepal
 * Geology of New Zealand
 * Geology of Nicaragua
 * Geology of Niger
 * Geology of Nigeria
 * Geology of North America
 * Geology of North Korea
 * Geology of North Macedonia
 * Geology of Northern Cyprus
 * Geology of Norway
 * Geology of Oman
 * Geology of Pakistan
 * Geology of Panama
 * Geology of Paraguay
 * Geology of Peru
 * Geology of Pluto
 * Geology of Romania
 * Geology of Russia
 * Geology of Rwanda
 * Geology of Saba
 * Geology of Saint Barthélemy
 * Geology of Saint Helena
 * Geology of Saint Kitts and Nevis
 * Geology of Saint Lucia
 * Geology of Saint Pierre and Miquelon
 * Geology of Saint Vincent and the Grenadines
 * Geology of San Marino
 * Geology of Saudi Arabia
 * Geology of Senegal
 * Geology of Serbia
 * Geology of Seychelles
 * Geology of Sierra Leone
 * Geology of Singapore
 * Geology of Sint Eustatius
 * Geology of Sint Maarten
 * Geology of Slovakia
 * Geology of Somalia
 * Geology of Somaliland
 * Geology of South Georgia and the South Sandwich Islands
 * Geology of South Korea
 * Geology of South Ossetia
 * Geology of South Sudan
 * Geology of Sudan
 * Geology of Suffolk
 * Geology of Suriname
 * Geology of Svalbard
 * Geology of Sweden
 * Geology of Syria
 * Geology of São Tomé and Príncipe
 * Geology of Taiwan
 * Geology of Tajikistan
 * Geology of Tanzania
 * Geology of Thailand
 * Geology of Togo
 * Geology of Transnistria
 * Geology of Trinidad and Tobago
 * Geology of Tunisia
 * Geology of Turkey
 * Geology of Turkmenistan
 * Geology of Uganda
 * Geology of Ukraine
 * Geology of Uruguay
 * Geology of Uzbekistan
 * Geology of Venezuela
 * Geology of Venus
 * Geology of Vietnam
 * Geology of Yemen
 * Geology of Zambia
 * Geology of Zimbabwe
 * Geology of solar terrestrial planets
 * Geology of the Bahamas
 * Geology of the British Indian Ocean Territory
 * Geology of the British Virgin Islands
 * Geology of the Cayman Islands
 * Geology of the Central African Republic
 * Geology of the Collectivity of Saint Martin
 * Geology of the Comoros
 * Geology of the Czech Republic
 * Geology of the Democratic Republic of the Congo
 * Geology of the Dominican Republic
 * Geology of the Gambia
 * Geology of the Himalaya
 * Geology of the Maldives
 * Geology of the Moon
 * Geology of the Netherlands
 * Geology of the Palestinian territories
 * Geology of the Republic of Artsakh
 * Geology of the Republic of the Congo
 * Geology of the Sahrawi Arab Democratic Republic
 * Geology of the Turks and Caicos Islands
 * Geology of the United Arab Emirates
 * Geology of the United States
 * Geomagnetic Field Monitoring Program of SUPARCO
 * Geomagnetic storm
 * Geomagnetically induced current
 * Geomancy
 * Geomantic figures
 * Geomathematics
 * Geomatics Association of Nova Scotia
 * Geomechanics
 * Geomessaging
 * Geometric albedo
 * Geometrized unit system
 * Geometrodynamics
 * Geomontography
 * Geomorphology
 * Geomorphology (journal)
 * Geomythology
 * Geon (geology)
 * Geon (physics)
 * Geopark
 * Geophotography
 * Geophysical & Astrophysical Fluid Dynamics
 * Geophysical Fluid Dynamics Laboratory Coupled Model
 * Geophysical Journal International
 * Geophysical MASINT
 * Geophysical Research Letters
 * Geophysical definition of 'planet'
 * Geophysical imaging
 * Geophysics
 * Geophysics (journal)
 * Geopolitics (journal)
 * Geopotential
 * Geopotential model
 * Geoprofessions
 * Georg Christoph Eimmart
 * Georg Friedrich Wilhelm Rümker
 * Georg Friedrich von Reichenbach
 * Georg Gerster
 * Georg Hartmann
 * Georg Heinrich Thiessen
 * Georg Hermann Struve
 * Georg Joachim Rheticus
 * Georg Karl Friedrich Kunowsky
 * Georg Marcgrave
 * Georg Merz
 * Georg Pfotzer
 * Georg Rickhey
 * Georg Samuel Dörffel
 * Georg Tannstetter
 * Georg Waltemath
 * Georg von Peuerbach
 * Georg von Tiesenhausen
 * George Abbey (NASA)
 * George Adams (1750-1795)
 * George Adamski
 * George Albert Smith (film pioneer)
 * George Alcock
 * George Anson, 1st Baron Anson
 * George Barr (artist)
 * George Bassett Clark
 * George Bernard Cox
 * George Bishop (astronomer)
 * George Bishop's Observatory
 * George Blumenthal
 * George Burba
 * George C. McVittie
 * George C. Pimentel
 * George Clarke, 1st Baron Sydenham of Combe
 * George Clyde Fisher
 * George Comstock (astronomer)
 * George Coyne
 * George D. Zamka
 * George Darwin Lectureship
 * George David Birkhoff
 * George David Gatewood
 * George Davidson (geographer)
 * George Deutsch
 * George Diller
 * George Dixon (Royal Navy officer)
 * George Dollond
 * George Downing Liveing
 * George E. Fox
 * George Edward Pendray
 * George Edwards (architect)
 * George Efstathiou
 * George Ellery Hale
 * George Ellery Hale Prize
 * George F. R. Ellis
 * George F. Sowers
 * George Francis FitzGerald
 * George Francis Hardy
 * George Frederic Verdon
 * George Frederick Chambers
 * George Gamow
 * George Garrett (inventor)
 * George H. Denton
 * George H. Ludwig
 * George H. Rieke
 * George H. Scithers
 * George Hammond (Stargate)
 * George Henry Evans Hopkins
 * George Henry Peters
 * George Herbig
 * George Hubback
 * George Hunt Williamson
 * George IV, Brixton
 * George Johnson (priest)
 * George Joseph (scientist)
 * George K. Miley
 * George Knapp (television journalist)
 * George Lefont
 * George Lovi
 * George Lucas
 * George Lyon Tupman
 * George Madeira
 * George Mary Searle
 * George Morel
 * George Mueller (NASA)
 * George Nelson (astronaut)
 * George Nixon (cricketer)
 * George O. Abell
 * George Pal
 * George Phillips Bond
 * George R. R. Martin
 * George R. Viscome
 * George Roupell
 * George Samuel Hurst
 * George Savile (cricketer)
 * George Shelvocke
 * George Sinker
 * George Smoot
 * George Stroumboulopoulos Tonight
 * George Stuart Henderson
 * George T. Whitesides
 * George Tchobanoglous
 * George Thibaut
 * George Thurland Prior
 * George Treacher
 * George Turner (writer)
 * George Underwood (artist)
 * George Van Biesbroeck
 * George Van Biesbroeck Prize
 * George Van Tassel
 * George W. Clark
 * George W. G. Allen
 * George W. Hough
 * George W. Myers
 * George Wallerstein
 * George Walter Tyrrell
 * George Washington (train)
 * George Washington Bacon
 * George William Hill
 * George Willis Ritchey
 * George Winder
 * George and Devonshire
 * George and Dragon, Fitzrovia
 * George and the Big Bang
 * George and the Blue Moon
 * George and the Unbreakable Code
 * George van den Bergh
 * George's Cosmic Treasure Hunt
 * George's Secret Key to the Universe
 * Georgeanne R. Caughlan
 * Georges Abrial
 * Georges Besançon
 * Georges Fournier
 * Georges Lecointe (explorer)
 * Georges Lemaître
 * Georges Lemaître ATV
 * Georges Matheron Lectureship
 * Georges Meylan
 * Georges Méliès
 * Georges Tiercy
 * Georgette Klinger
 * Georgia Brown (English singer)
 * Georgia Depression
 * Georgia Destouni
 * Georgia Frontiere
 * Georgiaite
 * Georgian (train)
 * Georgian National Astrophysical Observatory
 * Georgina Bruni
 * Georgios Balanos
 * Georgius Chrysococcas
 * Georgi–Glashow model
 * Georgy Beregovoy
 * Georgy Dobrovolsky
 * Georgy Katys
 * Georgy Shonin
 * Georgy Zatsepin
 * Geosat
 * Geoscience Australia
 * Geoscience Research Institute
 * Geoscience e-Journals
 * Geoscientific Model Development
 * Geoscientist (magazine)
 * Geoscientist In Training
 * Geosmin
 * Geosolar cycle
 * Geospatial topology
 * Geospeedometry
 * Geosphere
 * Geostationary Carbon Cycle Observatory
 * Geostationary Earth Radiation Budget
 * Geostationary Ocean Color Imager
 * Geostationary Operational Environmental Satellite
 * Geostationary orbit
 * Geostationary ring
 * Geostationary transfer orbit
 * Geostorm
 * Geosynchronous Satellite Launch Vehicle
 * Geosynchronous orbit
 * Geosynchronous satellite
 * Geotagging
 * Geotail
 * Geotargeting
 * Geotectonics (journal)
 * Geothermal Energy Association
 * Geothermal desalination
 * Geothermal energy
 * Geothermal energy in Taiwan
 * Geothermal exploration
 * Geothermal gradient
 * Geothermal heat pump
 * Geothermal heating
 * Geothermal power
 * Geotope
 * Geotourism
 * Geovisualization
 * Gerald Carr (astronaut)
 * Gerald D. Griffin
 * Gerald FitzGerald, 3rd Earl of Desmond
 * Gerald Hawkins
 * Gerald J. Fishman
 * Gerald J. Toomer
 * Gerald J. Wasserburg
 * Gerald Kron
 * Gerald Maurice Clemence
 * Gerald Seligman
 * Gerald Soffen
 * Gerard 't Hooft
 * Gerard (crater)
 * Gerard Bodifee
 * Gerard Cox
 * Gerard De Geer
 * Gerard F. Gilmore
 * Gerard J. Holzmann
 * Gerard K. O'Neill
 * Gerard Kuiper
 * Gerard P. Kuiper Prize
 * Gerard of Cremona
 * Gerard van Belle
 * Gerardo Meléndez
 * Gerasimovich (crater)
 * Gerb (pyrotechnic)
 * Gerhard Herzberg
 * Gerhard Thiele
 * Gerhard W. Goetze
 * Gerin (crater)
 * German Aerospace Center
 * German Climate Consortium
 * German Foundation for World Population
 * German Luftwaffe and Kriegsmarine Radar Equipment of World War II
 * German Naval Grid System
 * German Space Operations Center
 * German astronaut team
 * German space programme
 * Germanium Detector Array
 * Germanium tetrafluoride
 * Germanium-vacancy center in diamond
 * Germano D'Abramo
 * Germicidal lamp
 * Germinal (month)
 * Gernsback (crater)
 * Geroch energy
 * Geroch group
 * Geroch's splitting theorem
 * Gerolamo Sersale
 * Geronimo Villanueva
 * Gerontogens
 * Gerrit Pels
 * Gerrit Verschuur
 * Gerry Anderson's New Captain Scarlet
 * Gerry Neugebauer
 * Gerry Ryan
 * Gerson Goldhaber
 * Gersonides
 * Gertrude (crater)
 * Gervais's funnel-eared bat
 * Geryon Montes
 * Gestapo's Last Orgy
 * Get Christie Love!
 * Get Rich or Die Tryin' (film)
 * Getaway Special
 * Gett
 * Gevurah
 * Gewässerkennzahl
 * Geyser
 * Geysers on Mars
 * Gezel sheina
 * Ghana Planetarium
 * Ghana Space Science and Technology Centre
 * GhanaSat-1
 * Ghanim (crater)
 * Gharib (crater)
 * Gharlane of Eddore
 * Ghauri (missile)
 * Gherman Titov
 * Ghetto Freaks
 * Ghiberti (crater)
 * Ghislain Barbe
 * Ghodiyu
 * Ghost (Chinese constellation)
 * Ghost Fleet (novel)
 * Ghost Hound
 * Ghost Nebula
 * Ghost craters on Mercury
 * Ghost net
 * Ghost rockets
 * Ghostbusters (song)
 * Ghostface (identity)
 * Ghosts of Mars
 * Ghoul School
 * Ghoulardi
 * Ghrsst-pp
 * Ghulam Murtaza (physicist)
 * GiGA Island
 * GiSAT-1
 * Giacinto Scoles
 * Giacomo Badoer
 * Giacomo F. Maraldi
 * Giacomo Micalori
 * Giambattista Nolli
 * Giampaolo Vettolani
 * Giana Sisters DS
 * Giana Sisters: Twisted Dreams
 * Gianluca Masi
 * Giant GRB Ring
 * Giant Magellan Telescope
 * Giant Metrewave Radio Telescope
 * Giant Radio Array for Neutrino Detection
 * Giant Ukrainian Radio Telescope
 * Giant Void
 * Giant current ripples
 * Giant ghost-faced bat
 * Giant planet
 * Giant retinal ganglion cells
 * Giant star
 * Giant's kettle
 * Giant-impact hypothesis
 * Giants (series)
 * Giants: Citizen Kabuto
 * Gibbons–Hawking ansatz
 * Gibbons–Hawking effect
 * Gibbons–Hawking space
 * Gibbons–Hawking–York boundary term
 * Gibbs (crater)
 * Gibeon (meteorite)
 * Gibor Basri
 * Gibran (crater)
 * Giebichenstein
 * Gienah
 * Gifford Observatory
 * Gifu City Science Museum
 * Gigan
 * Gigas Sulci
 * Gijs Kuenen
 * Gila and Salt River meridian
 * Gilbert (Martian crater)
 * Gilbert (lunar crater)
 * Gilbert N. Lewis
 * Gill (Martian crater)
 * Gill (lunar crater)
 * Gilles Chabrier
 * Gilles Fontaine
 * Gilles-François de Gottignies
 * Gillham code
 * Gillian Foulger
 * Gillian R. Knapp
 * Gillian Wratt
 * Gillian Wright (astronomer)
 * Gilligan's Planet
 * Gilliland's Ranch
 * Gilmour Space Technologies
 * Gimbal lock
 * Gina R. Poe
 * Ginan (star)
 * Ginga (satellite)
 * Ginga (train)
 * Ginger Kerrick
 * Ginjer Buchanan
 * Ginnungagap
 * Ginrei
 * Ginzburg–Landau theory
 * Ginzel (crater)
 * Gioiello (galaxy cluster)
 * Gioja (crater)
 * Giordano Bruno
 * Giordano Bruno (crater)
 * Giorgio A. Tsoukalos
 * Giorgio Abetti
 * Giorgio Coresio
 * Giorgio de Santillana
 * Giotto (crater)
 * Giotto (spacecraft)
 * Giovanna Tinetti
 * Giovanni Amelino-Camelia
 * Giovanni Antonelli
 * Giovanni Antonio Amedeo Plana
 * Giovanni Antonio Baranzano
 * Giovanni Antonio Magini
 * Giovanni Battista Agucchi
 * Giovanni Battista Amici
 * Giovanni Battista Audiffredi
 * Giovanni Battista Baliani
 * Giovanni Battista Donati
 * Giovanni Battista Hodierna
 * Giovanni Battista Lacchini
 * Giovanni Battista Riccioli
 * Giovanni Battista Zupi
 * Giovanni Bianchini
 * Giovanni Bignami
 * Giovanni Boccardi (astronomer)
 * Giovanni Ciampoli
 * Giovanni Domenico Cassini
 * Giovanni Domenico Maraldi
 * Giovanni Dondi dell'Orologio
 * Giovanni Fazio
 * Giovanni Francesco Gemelli Careri
 * Giovanni Francesco Sagredo
 * Giovanni Francesco Zarbula
 * Giovanni Inghirami
 * Giovanni Jacopo Spada
 * Giovanni Padovani
 * Giovanni Sante Gaspero Santini
 * Giovanni Schiaparelli
 * Giovanni Sostero
 * Giovanni de Galliano Pieroni
 * Giovanni de Sanctis
 * Girawali Observatory
 * Gires–Tournois etalon
 * Girl (Chinese constellation)
 * Girl vs. Monster
 * Girls in Prison (1994 film)
 * Girolamo Manfredi
 * Gish Bar Patera
 * Gist (graphics software)
 * Git Along!
 * Gitaroo Man
 * Giulio Alenio
 * Giulio Magli
 * Giulio Tononi
 * Giuseppe Asclepi
 * Giuseppe Biancani
 * Giuseppe Bianchi (astronomer)
 * Giuseppe Campani
 * Giuseppe Cocconi
 * Giuseppe Colombo Centre for Space Geodesy
 * Giuseppe Forti
 * Giuseppe Piazzi
 * Giuseppina Aliverti
 * Givatayim Observatory
 * Give & Take (Red Dwarf)
 * Gjon Gazulli
 * Glacial River Warren
 * Glacial boundary
 * Glacial earthquake
 * Glacial history of Minnesota
 * Glacial motion
 * Glacial period
 * Glacial polish
 * Glacial refugium
 * Glacial relict
 * Glacial stream
 * Glacial survival hypothesis
 * Glaciecola nitratireducens
 * Glacier
 * Glacier cave
 * Glacier foreland
 * Glacier growing
 * Glacier head
 * Glacier ice accumulation
 * Glacier mass balance
 * Glacier mice
 * Glacier morphology
 * Glacier terminus
 * Glaciers on Mars
 * Glacio-geological databases
 * Glaciogenic Reservoir Analogue Studies Project
 * Glaciolacustrine deposits
 * Glaciology
 * Glaciovolcanism
 * Gladys Gale
 * Gladys Vergara
 * Gladys West
 * Glaisher (crater)
 * Glan–Foucault prism
 * Glan–Taylor prism
 * Glan–Thompson prism
 * Glasford crater
 * Glasgow Science Centre
 * Glasgowman's Wrath
 * Glashütte Observatory
 * Glass cockpit
 * Glass with embedded metal and sulfides
 * Glasser effect
 * Glasslands Gallery
 * Glauber (crater)
 * Glavkosmos
 * Glazenap (crater)
 * Gledhill (crater)
 * Glee, Actually
 * Glen
 * Glen D. Riley Observatory
 * Glen P. Wilson
 * Glen or Glenda
 * Glen's long-fingered bat
 * Glenelg, Mars
 * Glenn Dennis
 * Glenn Research Center
 * Glenn White
 * Glennys Farrar
 * Gleti
 * Gleysol
 * Gliese 1
 * Gliese 1002
 * Gliese 105
 * Gliese 1061
 * Gliese 1061 c
 * Gliese 1061 d
 * Gliese 1062
 * Gliese 1132
 * Gliese 1132 b
 * Gliese 1214
 * Gliese 1214 b
 * Gliese 146
 * Gliese 15 Ab
 * Gliese 15 Ac
 * Gliese 163
 * Gliese 163 c
 * Gliese 167
 * Gliese 176
 * Gliese 176 b
 * Gliese 179
 * Gliese 179 b
 * Gliese 180
 * Gliese 205
 * Gliese 208
 * Gliese 22
 * Gliese 221
 * Gliese 229
 * Gliese 251
 * Gliese 268
 * Gliese 282
 * Gliese 3021 b
 * Gliese 317
 * Gliese 317 b
 * Gliese 318
 * Gliese 3293
 * Gliese 3470
 * Gliese 3470 b
 * Gliese 357
 * Gliese 3634
 * Gliese 3634 b
 * Gliese 3685
 * Gliese 393
 * Gliese 402
 * Gliese 408
 * Gliese 412
 * Gliese 42
 * Gliese 422 b
 * Gliese 433
 * Gliese 436
 * Gliese 436 b
 * Gliese 445
 * Gliese 49
 * Gliese 504 b
 * Gliese 521
 * Gliese 536 b
 * Gliese 54
 * Gliese 555
 * Gliese 570
 * Gliese 581
 * Gliese 581 planetary system
 * Gliese 581b
 * Gliese 581c
 * Gliese 581d
 * Gliese 581e
 * Gliese 581g
 * Gliese 588
 * Gliese 623
 * Gliese 638
 * Gliese 649
 * Gliese 649 b
 * Gliese 667
 * Gliese 667 Cb
 * Gliese 667 Cc
 * Gliese 673
 * Gliese 674
 * Gliese 674 b
 * Gliese 676
 * Gliese 682
 * Gliese 682 c
 * Gliese 686
 * Gliese 687
 * Gliese 69
 * Gliese 693
 * Gliese 710
 * Gliese 752
 * Gliese 754
 * Gliese 758
 * Gliese 758 B
 * Gliese 777
 * Gliese 777 b
 * Gliese 777 c
 * Gliese 784
 * Gliese 806
 * Gliese 809
 * Gliese 829
 * Gliese 832
 * Gliese 832 b
 * Gliese 832 c
 * Gliese 849
 * Gliese 849 b
 * Gliese 86
 * Gliese 86 b
 * Gliese 876
 * Gliese 876 b
 * Gliese 876 c
 * Gliese 876 d
 * Gliese 876 e
 * Gliese 877
 * Gliese 880
 * Gliese 908
 * Gliese Catalogue of Nearby Stars
 * Glikson crater
 * Glinda the Good Witch
 * Glinka (crater)
 * GlobaLogix
 * Global Atmosphere Watch
 * Global Atmospheric Research Program
 * Global Boundary Stratotype Section and Point
 * Global Challenge Award
 * Global Change Biology
 * Global Change Master Directory
 * Global Change Observation Mission
 * Global Climate Observing System
 * Global Drifter Program
 * Global Earth Observation System of Systems
 * Global Ecosystem Dynamics Investigation
 * Global Educational Network for Satellite Operations
 * Global Energy and Water Exchanges
 * Global Environmental Change
 * Global Environmental Multiscale Model
 * Global Footprint Network
 * Global Geospace Science
 * Global Hands-On Universe
 * Global Historical Climatology Network
 * Global Internet usage
 * Global Mobile Satellite System
 * Global Networks
 * Global Observing Systems Information Center
 * Global Ocean Data Analysis Project
 * Global Ocean Ecosystem Dynamics
 * Global Ocean Observing System
 * Global Oscillations Network Group
 * Global Ozone Monitoring by Occultation of Stars
 * Global Positioning System
 * Global Precipitation Measurement
 * Global Rocket 1
 * Global Sea Level Observing System
 * Global Solar Atlas
 * Global Standard Stratigraphic Age
 * Global Terrestrial Network for Permafrost
 * Global air-traffic management
 * Global and Planetary Change
 * Global brain
 * Global catastrophic risk
 * Global change
 * Global commons
 * Global meteoric water line
 * Global network
 * Global news flow
 * Global relief model
 * Global surface temperature
 * Global warming potential
 * Global-scale Observations of the Limb and Disk
 * Globally hyperbolic manifold
 * Globalsat Group
 * Globalstar
 * Globar
 * Globe at Night
 * Globe of Matelica
 * Globular cluster
 * Globus Aerostaticus
 * Globus Cassus
 * Globus-1M No.12L
 * Glomalin
 * Glomeromycota
 * Gloppedalsura
 * Gloria Dubner
 * Gloria Lee
 * Gloria Suzanne Koenigsberger Horowitz
 * Gloria-Theater (Cologne)
 * Glory (satellite)
 * Glory Trip
 * Glospace SGK-70
 * Glossary of Russian and USSR aviation acronyms: Avionics and instruments
 * Glossary of astronomy
 * Glossary of caving and speleology
 * Glossary of environmental science
 * Glossary of geology
 * Glossary of geothermal heating and cooling
 * Glossary of meteoritics
 * Glossary of string theory
 * Glow discharge
 * Glow switch starter
 * Glow-discharge optical emission spectroscopy
 * Glowworm (astronomy)
 * Gluck (crater)
 * Glucose phosphate broth
 * Glucuronide
 * GlueX
 * Gluon condensate
 * Glushko (crater)
 * Glutamicibacter soli
 * Glynn Lunney
 * Gnevyshev-Ohl rule
 * Gnome
 * Gnomon
 * Gnomon of Saint-Sulpice
 * Gnomonics
 * Gnosca Observatory
 * Gnowee
 * Go Go Power Rangers
 * Go fever
 * Go the Fuck to Sleep
 * Go! Princess Pretty Cure the Movie: Go! Go!! Gorgeous Triple Feature!!!
 * GoTo (telescopes)
 * Goa Science Centre
 * Goat (zodiac)
 * Goat Paddock crater
 * Goat, Chelsea
 * Gobabeb
 * Gobi Desert
 * Goblin Game
 * Goclenius (crater)
 * God Created the Integers
 * God Emperor of Dune
 * God Save the Queen (comics)
 * God's Wife of Amun
 * God, the Universe and Everything Else
 * GodEngine
 * Godadi
 * Godai (Japanese philosophy)
 * Goddard (crater)
 * Goddard Earth Observing System
 * Goddard High Resolution Spectrograph
 * Goddard Institute for Space Studies
 * Goddard Space Flight Center
 * Goddard–Thorn theorem
 * Gode Venkata Juggarow
 * Godin (crater)
 * Godlee Observatory
 * Godrej & Boyce
 * Gods in the Sky
 * Godskitchen
 * Godzilla 2000
 * Godzilla vs. Megaguirus
 * Godzilla vs. SpaceGodzilla
 * Godzilla: City on the Edge of Battle
 * Godzilla: Destroy All Monsters Melee
 * Godzilla: King of the Monsters (2019 film)
 * Godzilla: Planet of the Monsters
 * Godzilla: The Planet Eater
 * Goeppert-Mayer (crater)
 * Goethe Basin
 * Goethe Link Observatory
 * Goetz Oertel
 * Gogol (crater)
 * Going Postal
 * Goio-Erê Formation
 * Gojek
 * Gokujo Parodius
 * Golagrama
 * Golay cell
 * Golconda Thrust
 * Gold (crater)
 * Gold Coast Motorail
 * Gold Medal of the Royal Astronomical Society
 * Gold universe
 * GoldSim
 * Golden Bed
 * Golden Eagle, Birmingham
 * Golden Gate (train)
 * Golden Gate Ballroom
 * Golden Gate of the Ecliptic
 * Golden Heart, Spitalfields
 * Golden Plough Tavern
 * Golden Rocket (train)
 * Golden Slumbers
 * Golden Son
 * Golden Spike Company
 * Golden State (train)
 * Golden State Theatre
 * Golden Verses
 * Golden binary
 * Golden hat
 * Golden masked owl
 * Golden mean (philosophy)
 * Golden number (time)
 * GoldenEye
 * Goldendale Observatory State Park
 * Goldilocks principle
 * Goldreich-Kylafis effect
 * Goldschmidt (crater)
 * Goldstino
 * Goldstone Catena
 * Goldstone Deep Space Communications Complex
 * Goldstone Solar System Radar
 * Golgi (crater)
 * Goliat
 * Golitsyn (crater)
 * Golovin (crater)
 * Golubkina (crater)
 * GomSpace
 * Goma (software)
 * Gomez's Hamburger
 * Gomul Catena
 * Gondwana
 * Gondwana Research
 * Gonets
 * Gonnus Mons
 * Gonzalo Tancredi
 * Good Boy!
 * Good Bye, Lenin!
 * Good Hope Jet
 * Good Little Girls
 * Good Morning and... Goodbye!
 * Good Night (Beatles song)
 * Good Night, Elmer
 * Good Rockin' Tonite
 * Goodacre (crater)
 * Goodbye Blue Sky
 * Goodbye Cruel World (Pink Floyd song)
 * Goodbye Deponia
 * Goodbye Kiss
 * Goodbye Uncle Tom
 * Goodbye to Berlin
 * Goode Solar Telescope
 * Goodnight Moon
 * Goodyear Meteor Junior
 * Google Earth
 * Google Latitude
 * Google Lunar X Prize
 * Google Maps pin
 * Google Street View
 * Goose Lake meteorite
 * Goosebumps 2: Haunted Halloween
 * Gop Temple
 * Gopakumar–Vafa invariant
 * Gopal Krishna (astronomer)
 * Gor
 * Gor (film)
 * Gorath
 * Gordimer (crater)
 * Gordo (monkey)
 * Gordon A. McKay Award
 * Gordon Allen Newkirk Jr.
 * Gordon Cooper
 * Gordon J. Garradd
 * Gordon J. Stanley
 * Gordon Myers Amateur Achievement Award
 * Gordon Novel
 * Gordon Pettengill
 * Gordon Swann
 * Gordon Van Gelder
 * Gordon's War
 * Gore (crater)
 * Gore (segment)
 * Gorizont
 * Gorizont 33
 * Gornal stone
 * Gornergrat Infrared Telescope
 * Gornergrat Kulm Hotel
 * Gorodomlya Island
 * Goseck circle
 * Gosses Bluff crater
 * Goth (2003 film)
 * Gotha Observatory
 * Gothic (Nox Arcana album)
 * Gottfried Heinsius
 * Gottfried Kirch
 * Gottfried Wilhelm Leibniz
 * Goulburn (Mars)
 * Gould (crater)
 * Gould Belt
 * Gould Belt Survey
 * Gould designation
 * Governor Aker Observatory
 * Govert Schilling
 * Govind Swarup
 * Govinda Bhattathiri
 * Gow crater
 * Gowdy solution
 * Goya (crater)
 * GpsDrive
 * GpsGate
 * GpsOne
 * Gpsd
 * GrADS
 * Graceful exit problem (cosmology)
 * Grachev (crater)
 * Gracilibacillus halotolerans
 * Grade (slope)
 * Graded manifold
 * Graded shoreline
 * Gradius (video game)
 * Gradius Advance
 * Gradius Gaiden
 * Gradius II
 * Gradius III
 * Gradius III and IV
 * Gradius IV
 * Gradius ReBirth
 * Gradius V
 * Gradius: The Interstellar Assault
 * Gradualism
 * Graduation Day (film)
 * Graeme Park (DJ)
 * Graff (Martian crater)
 * Graff (lunar crater)
 * Graffias
 * Graham (satellite)
 * Graham E. Bell
 * Graham Fleming
 * Graham Ingels
 * Graham Ryder
 * Graham Sleight
 * Grain flow
 * Grain for Green
 * Grain size
 * Grainger (crater)
 * Gran Chaco
 * Gran Telescopio Canarias
 * Gran Turismo 6
 * Granada Theater (Kansas City, Kansas)
 * Granat
 * Granby crater
 * Grand Canyon Limited
 * Grand Canyon National Park
 * Grand Coulee
 * Grand Hotel, Broadway
 * Grand Illusion Cinema
 * Grand Rapids Amateur Astronomical Association
 * Grand Riviera Theater
 * Grand Tour (novel series)
 * Grand Tour program
 * Grand Unified Theory
 * Grand cross (astrology)
 * Grand design spiral galaxy
 * Grand tack hypothesis
 * Grand unification epoch
 * Grande Médaille d'Or des Explorations
 * Grandma's Pet
 * Grandview Mine
 * Granicus Valles
 * Grannus
 * Grant Callin
 * Grant Morrison
 * Grant Nelson
 * Grant O. Gale Observatory
 * Grant Smillie
 * Grant meteorite
 * Grantchester Meadows (song)
 * Granule (solar physics)
 * Grape syrup
 * Graphic telescope
 * Graphical timeline from Big Bang to Heat Death
 * Graphical timeline of the Big Bang
 * Graphical timeline of the Stelliferous Era
 * Graphical timeline of the universe
 * Graphite furnace atomic absorption
 * Grapple fixture
 * Grass valley
 * Grassed waterway
 * Grassland degradation
 * Grasslands National Park
 * Grassmann number
 * Grauman's Chinese Theatre
 * Grauman's Egyptian Theatre
 * Gravastar
 * Grave (crater)
 * Grave New World (Pretty Little Liars)
 * Grave of the Vampire
 * Gravel Gertie
 * Graves (system)
 * Graveyard orbit
 * Gravimeter
 * Gravimetry
 * Graviphoton
 * Graviquake
 * Graviscalar
 * Gravit
 * Gravitation (book)
 * Gravitation of the Moon
 * Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor
 * Gravitational Wave International Committee
 * Gravitational acceleration
 * Gravitational anomaly
 * Gravitational binding energy
 * Gravitational biology
 * Gravitational collapse
 * Gravitational compression
 * Gravitational constant
 * Gravitational coupling constant
 * Gravitational energy
 * Gravitational field
 * Gravitational instability
 * Gravitational instanton
 * Gravitational interaction of antimatter
 * Gravitational keyhole
 * Gravitational lens
 * Gravitational lensing formalism
 * Gravitational memory effect
 * Gravitational microlensing
 * Gravitational mirage
 * Gravitational plane wave
 * Gravitational potential
 * Gravitational redshift
 * Gravitational shielding
 * Gravitational singularity
 * Gravitational soliton
 * Gravitational time dilation
 * Gravitational two-body problem
 * Gravitational wave
 * Gravitational wave background
 * Gravitational-wave astronomy
 * Gravitational-wave observatory
 * Gravitationally-interacting massive particles
 * Gravitino
 * Gravitoelectromagnetism
 * Gravitomagnetic time delay
 * Gravitometer
 * Graviton
 * Graviton (comics)
 * Gravity
 * Gravity (2013 film)
 * Gravity (comics)
 * Gravity (software)
 * Gravity Crash
 * Gravity Discovery Centre
 * Gravity Field and Steady-State Ocean Circulation Explorer
 * Gravity Gradient Technology Satellite
 * Gravity Grave
 * Gravity Probe A
 * Gravity Probe B
 * Gravity Research Foundation
 * Gravity and Extreme Magnetism
 * Gravity anomalies of Britain and Ireland
 * Gravity anomaly
 * Gravity assist
 * Gravity darkening
 * Gravity drag
 * Gravity feed
 * Gravity gradiometry
 * Gravity gun
 * Gravity of Earth
 * Gravity of Mars
 * Gravity science (Juno)
 * Gravity spreading
 * Gravity tractor
 * Gravity train
 * Gravity turn
 * Gravity-gradient stabilization
 * GravitySimulator
 * Gray Barker
 * Gray Lensman
 * Gray Lyda
 * Gray treefrog
 * Graziella Branduardi-Raymont
 * Grazing lunar occultation
 * Great American Interchange
 * Great Annihilator
 * Great Artesian Basin
 * Great Attractor
 * Great Barrier Reef
 * Great Bear River
 * Great Bed of Ware
 * Great Book of Interpretation of Dreams
 * Great Comet of 1264
 * Great Comet of 1556
 * Great Comet of 1577
 * Great Comet of 1680
 * Great Comet of 1744
 * Great Comet of 1811
 * Great Comet of 1819
 * Great Comet of 1823
 * Great Comet of 1843
 * Great Comet of 1882
 * Great Comet of 1901
 * Great Dark Spot
 * Great Debate (astronomy)
 * Great Diamond
 * Great Emperor of Polaris
 * Great Falls orogeny
 * Great Filter
 * Great House at Sonning
 * Great January Comet of 1910
 * Great Lakes Integrated Sciences and Assessments
 * Great Lakes tectonic zone
 * Great Moon Hoax
 * Great Northern Railway Tavern
 * Great Observatories Origins Deep Survey
 * Great Observatories program
 * Great Paris Exhibition Telescope of 1900
 * Great Plains
 * Great Pumpkin
 * Great Red Spot
 * Great Rift (astronomy)
 * Great Rift Valley
 * Great Russian Regions
 * Great Salinity Anomaly
 * Great Science Fiction Stories About Mars
 * Great Scott (lunar sample)
 * Great Seal of Missouri
 * Great South Australian Coastal Upwelling System
 * Great Southern Comet of 1887
 * Great Stalacpipe Organ
 * Great Tehuelche Paleolake
 * Great White Death
 * Great White Spot
 * Great Year
 * Great bent-winged bat
 * Great capes
 * Great comet
 * Great conjunction
 * Great refractor
 * Greater Adria
 * Greater Green River Intergalactic Spaceport
 * Greater Yellowstone Ecosystem
 * Greater long-fingered bat
 * Greater mouse-tailed bat
 * Greaves (crater)
 * Greeley (Martian crater)
 * Green (Martian crater)
 * Green (lunar crater)
 * Green Banana Hole
 * Green Bank Interferometer
 * Green Bank Observatory
 * Green Bank Telescope
 * Green Canyon
 * Green Catalogue of Supernova Remnants
 * Green Dragon Tavern
 * Green Dragon, Dancers Hill
 * Green Earth Sciences
 * Green Grotto Caves
 * Green Is the Colour
 * Green Kenue
 * Green Lantern (film)
 * Green Lantern Corps
 * Green Lantern: Earth One
 * Green Lantern: Emerald Knights
 * Green Lantern: First Flight
 * Green Lantern: Mosaic
 * Green Lantern: Rise of the Manhunters
 * Green Man (character)
 * Green Man, Trumpington
 * Green Mars (novella)
 * Green Point Observatory
 * Green Propellant Infusion Mission
 * Green Scouting
 * Green Star Series
 * Green Valley (Mars)
 * Green Velvet
 * Green bean galaxy
 * Green chemistry
 * Green criminology
 * Green fireballs
 * Green flash
 * Green infrastructure
 * Green infrastructure for stormwater management
 * Green star (astronomy)
 * GreenPal
 * GreenScreen List Translator
 * GreenScreen for Safer Chemicals
 * Greene King
 * Greenhouse Gases Observing Satellite
 * Greenhouse and icehouse Earth
 * Greenhouse effect
 * Greenhouse gas monitoring
 * Greenland (film)
 * Greenland Telescope
 * Greenpeace East Asia
 * Greenpeace India
 * Greenwich (soil)
 * Greenwich 28 inch refractor
 * Greenwood frequency
 * Green–Schwarz mechanism
 * Greg Autry
 * Greg Broadmore
 * Greg Cox (writer)
 * Greg Edmonson
 * Greg Kinnear
 * Greg Pickersgill
 * Greg Pikitis
 * Greg Shaw
 * Greg Stainer
 * Greg and Colin Strause
 * Gregg Thompson (astronomer)
 * Gregor Morfill
 * Gregorian Tower
 * Gregorian telescope
 * Gregory (crater on Venus)
 * Gregory (lunar crater)
 * Gregory Benford
 * Gregory C. Johnson
 * Gregory Chamitoff
 * Gregory Charvat
 * Gregory Choniades
 * Gregory Fahlman
 * Gregory H. Johnson
 * Gregory J. Harbaugh
 * Gregory Jarvis
 * Gregory Natural Bridge
 * Gregory Olsen
 * Gregory P. Laughlin
 * Gregory Scott Aldering
 * Gregory T. Linteris
 * Gregory W. Henry
 * Gregory Wright (astrophysicist)
 * Gregory–Laflamme instability
 * Greifswalder Oie
 * Greip (moon)
 * Greisen–Zatsepin–Kuzmin limit
 * Grendizer
 * Greninger chart
 * Grenoble Observatory for Sciences of the Universe
 * Gresham's law
 * Greta Keller
 * Greta Woodrew
 * Gretchen Daily
 * Gretchen W. McClain
 * Grey alien
 * Grey atmosphere
 * Grey water
 * Greyhound Pub
 * Gri graphical language
 * Grid compass
 * Grid north
 * Grid reference
 * GridPP
 * Gridded ion thruster
 * Grieg (crater)
 * Griffith Observatory
 * Griffith's long-fingered bat
 * Grigg (crater)
 * Grignard (crater)
 * Grigor Gurzadyan
 * Grigori Tokaty
 * Grigory Neujmin
 * Grigory Shajn
 * Grim Grinning Ghosts
 * Grimaldi (crater)
 * Grimes (musician)
 * Grimke (crater)
 * Grimsley (horror host)
 * Grindavik (crater)
 * Grishma
 * Grism
 * Grissom (crater)
 * Groff Conklin
 * Grome
 * Gromov Flight Research Institute
 * Gromov–Witten invariant
 * Gronda lagunare
 * Groom Lake (film)
 * Groombridge 1618
 * Groombridge 1830
 * Groombridge 34
 * Groombridge Transit Circle
 * Grooverider
 * Grooves (archaeology)
 * Gros Horloge
 * Grossite
 * Grote Reber
 * Grotrian (crater)
 * Grotrian diagram
 * Grotto
 * Ground Based Strategic Deterrent
 * Ground Crew Project
 * Ground Mobile Forces
 * Ground fissure
 * Ground proximity warning system
 * Ground sample distance
 * Ground segment
 * Ground track
 * Ground truth
 * GroundBIRD
 * Groundwater
 * Groundwater discharge
 * Groundwater energy balance
 * Groundwater flow
 * Groundwater flow equation
 * Groundwater on Mars
 * Groundwater pollution
 * Groundwater recharge
 * Groundwater remediation
 * Groundwater sapping
 * Groundwater-dependent ecosystems
 * Group (stratigraphy)
 * Group Marriage
 * Group field theory
 * Group on Earth Observations
 * Grove (crater)
 * Grove House, Harrogate
 * Grow Home
 * Grow Up, Tony Phillips
 * Growing region
 * Growing the Big One
 * Grubb Parsons
 * Gruber Prize in Cosmology
 * Gruemberger (crater)
 * Gruithuisen (crater)
 * Grupo Climax
 * Grupo Lo Monaco
 * Grupo de Astronomía y Ciencias del Espacio
 * Grus (constellation)
 * Grus (geology)
 * Grus Wall
 * Grus in Chinese astronomy
 * Grylloblatta campodeiformis
 * Grylloblattidae
 * Grzegorz Halama Oklasky
 * Grzegorz Pojmański
 * Guabonito (crater)
 * Guano
 * Guaraci
 * Guarda Crater
 * Guardian (1986 video game)
 * Guardians of Ga'Hoole
 * Guardians of the Galaxy (TV series)
 * Guardians of the Galaxy (film)
 * Guardians of the Galaxy (soundtrack)
 * Guardians of the Galaxy Vol. 2
 * Guardians of the Galaxy Vol. 2 (soundtrack)
 * Guardians of the Galaxy – Mission: Breakout!
 * Guardians of the Galaxy: Cosmic Rewind
 * Guardians of the Galaxy: The Telltale Series
 * Guardians of the Universe
 * Guards! Guards!
 * Guavaween
 * Gubru
 * Gudea cylinders
 * Guelph soil
 * Guelta
 * Guenter Brueckner
 * Guenter Loeser Memorial Award
 * Guericke (crater)
 * Guest (lunar crater)
 * Guest beer
 * Guest star (astronomy)
 * Guiana Space Centre
 * Guidance, navigation, and control
 * Guide Star Catalog
 * Guide star
 * Guiding center
 * Guido Bonatti
 * Guido Horn d'Arturo
 * Guido Münch
 * Guido d'Arezzo (crater)
 * Guido von Pirquet
 * Guidobaldo del Monte
 * Guilbert (crater)
 * Guildmasters' Guide to Ravnica
 * Guillaume (crater)
 * Guillaume Bigourdan
 * Guillaume Le Gentil
 * Guillermo Haro
 * Guillermo Haro Observatory
 * Guillermo del Toro
 * Guilty (video game)
 * Guilty Crown
 * Guilá Naquitz Cave
 * Guinevere Planitia
 * Guinness Book of Astronomy
 * Guion Bluford
 * Guizhou WZ-2000
 * Gujarat solar park 1
 * Gul Bahao
 * Gula (crater)
 * Gula Mons
 * Gulf
 * Gulf Coast Exploreum Science Center
 * Gulf Coast Rebel
 * Gulf Intracoastal Waterway West Closure Complex
 * Gulf Wind
 * Gulf of St. Lawrence lowland forests
 * Gullies on Mars
 * Gulliver's Travels
 * Gullstrand (crater)
 * Gullstrand–Painlevé coordinates
 * Gully
 * Gum (crater)
 * Gum 15
 * Gum Nebula
 * Gum catalog
 * Gumbo (soil)
 * Gun Ana
 * Gun Frontier (video game)
 * Gun camera
 * Gunaras Kakaras
 * Gunman Chronicles
 * Gunmen of the Apocalypse
 * Gunnar Erdtman
 * Gunnar Garfors
 * Gunnar Malmquist
 * Gunnar Nordström
 * Gunnerus Sustainability Award
 * Gunn–Peterson trough
 * Gunpei Yokoi
 * Gunter Sachs
 * Guo Shoujing
 * Gurtam
 * Gus Grissom
 * Gusev (Martian crater)
 * Gusev crater (Russia)
 * Gustaf Gabriel Hällström
 * Gustav Andreas Tammann
 * Gustav Eberhard
 * Gustav Hahn
 * Gustav Kirchhoff
 * Gustav Müller
 * Gustav Naan
 * Gustav Niessl von Mayendorf
 * Gustav Rose
 * Gustav Spörer
 * Gustav Steinmann Medal
 * Gustav Tschermak von Seysenegg
 * Gustave Hermite
 * Gusto (producer)
 * Gut (coastal geography)
 * Gut flora
 * Gutenberg (crater)
 * Guthnick (crater)
 * Gut–brain axis
 * Guus Berkhout
 * Guwahati Planetarium
 * Guy André Boy
 * Guy Bomford
 * Guy Consolmagno
 * Guy Cuevas
 * Guy Fawkes Night
 * Guy Fawkes mask
 * Guy Gardner (astronaut)
 * Guy H. Lillian III
 * Guy Laliberté
 * Guy Reiss
 * Guyford Stever
 * Guyot (crater)
 * Guyparkeria
 * Guys with Kids
 * Guz Hardy & J Luke
 * Guzhangian
 * Guñelve
 * Gwacheon National Science Museum
 * Gwen Bridge
 * Gwen Fenton
 * Gwenddydd
 * Gweni-Fada crater
 * Gwyneth Jones (novelist)
 * Gwynne Shotwell
 * Gyarah Sidi
 * Gyldén (crater)
 * Gypcrust
 * Gypsisol
 * Gypsum cave
 * Gypsy Rose Lee
 * Gyrocompass
 * Gyrokinetic ElectroMagnetic
 * Gyrokinetics
 * Gyroradius
 * Gyula Fényi
 * György Kulin
 * György Paál
 * Gärtner (crater)
 * Gäu
 * Géo André
 * Géomorphologie
 * Gérard Feldzer
 * Gérard Klein
 * Gérard de Vaucouleurs
 * Géza Hofi
 * Gödel metric
 * Göktürk-1
 * Göktürk-2
 * Göktürk-3
 * Göncöl Foundation
 * Görel Crona
 * Görtler vortices
 * Gösta Gahm
 * Göteborgs FyrverkeriFabrik
 * Göttingen Observatory
 * Günter Wendt
 * Gēmusetto
 * Għar Għerduf catacombs
 * H Carinae
 * H Centauri
 * H I region
 * H II region
 * H Puppis
 * H Scorpii
 * H Velorum
 * H band (infrared)
 * H-1NF
 * H-I
 * H-II Transfer Vehicle
 * H-alpha
 * H. A. Rey
 * H. Bruce Franklin
 * H. G. Wells (crater)
 * H. G. Wells' The Shape of Things to Come
 * H. G. van de Sande Bakhuyzen
 * H. Jay Melosh
 * H. L. Gold
 * H. P. Lovecraft
 * H. Paul Shuch
 * H. R. Giger
 * H. R. MacMillan Space Centre
 * H. R. Nagendra
 * H. R. Van Dongen
 * H.R. 1300 (113th Congress)
 * H.V. Dalling
 * H1504+65
 * H1821+643
 * H2356-309
 * HABIT (HabitAbility: Brine, Irradiation and Temperature)
 * HAL 9000
 * HAL Laboratory
 * HAL/S
 * HALCA
 * HAMMER (spacecraft)
 * HAMSAT
 * HARPS-N
 * HAT-P-11
 * HAT-P-11b
 * HAT-P-12
 * HAT-P-12b
 * HAT-P-13
 * HAT-P-13b
 * HAT-P-13c
 * HAT-P-14b
 * HAT-P-15
 * HAT-P-16
 * HAT-P-17
 * HAT-P-18
 * HAT-P-19
 * HAT-P-1b
 * HAT-P-20
 * HAT-P-21
 * HAT-P-23
 * HAT-P-24
 * HAT-P-24b
 * HAT-P-25
 * HAT-P-26
 * HAT-P-27
 * HAT-P-28
 * HAT-P-29
 * HAT-P-2b
 * HAT-P-3
 * HAT-P-30
 * HAT-P-32b
 * HAT-P-33
 * HAT-P-33b
 * HAT-P-3b
 * HAT-P-4
 * HAT-P-4b
 * HAT-P-5
 * HAT-P-50b
 * HAT-P-5b
 * HAT-P-6
 * HAT-P-6b
 * HAT-P-7
 * HAT-P-7b
 * HAT-P-8
 * HAT-P-8b
 * HAT-P-9
 * HAT-P-9b
 * HATNet Project
 * HATS-11b
 * HATS-36b
 * HCG 87
 * HCM-6A
 * HCN-0.009-0.044
 * HD 100307
 * HD 100546
 * HD 100655
 * HD 100777
 * HD 100777 b
 * HD 100825
 * HD 101570
 * HD 101584
 * HD 10180
 * HD 10180 c
 * HD 101930
 * HD 101930 b
 * HD 102117
 * HD 102117 b
 * HD 102195
 * HD 102195 b
 * HD 102272
 * HD 102272 b
 * HD 102272 c
 * HD 102350
 * HD 102365
 * HD 102776
 * HD 102839
 * HD 102956 b
 * HD 10307
 * HD 103079
 * HD 103197
 * HD 103197 b
 * HD 103774
 * HD 104067
 * HD 104067 b
 * HD 104304
 * HD 104985
 * HD 104985 b
 * HD 105382
 * HD 10550
 * HD 106112
 * HD 106252
 * HD 106252 b
 * HD 10647
 * HD 10647 b
 * HD 106515
 * HD 106760
 * HD 106906
 * HD 106906 b
 * HD 107146
 * HD 107148
 * HD 107148 b
 * HD 107914
 * HD 108063
 * HD 108147
 * HD 108147 b
 * HD 108541
 * HD 108863
 * HD 108874
 * HD 108874 b
 * HD 108874 c
 * HD 109271
 * HD 109749
 * HD 109749 b
 * HD 110073
 * HD 110432
 * HD 110458
 * HD 110956
 * HD 111031
 * HD 111031 b
 * HD 111232
 * HD 111232 b
 * HD 111395
 * HD 111456
 * HD 111597
 * HD 111915
 * HD 111968
 * HD 112014
 * HD 112028
 * HD 112410
 * HD 113337
 * HD 113538
 * HD 113538 b
 * HD 113538 c
 * HD 113703
 * HD 113766
 * HD 114386
 * HD 114386 b
 * HD 114613
 * HD 114729
 * HD 114729 b
 * HD 114762
 * HD 114762 b
 * HD 114783
 * HD 114783 b
 * HD 114837
 * HD 115004
 * HD 11506
 * HD 11506 b
 * HD 11506 c
 * HD 115211
 * HD 115310
 * HD 115337
 * HD 115404
 * HD 115600
 * HD 116029
 * HD 116243
 * HD 117207
 * HD 117207 b
 * HD 117440
 * HD 117618
 * HD 117618 b
 * HD 117939
 * HD 118203
 * HD 118203 b
 * HD 1185
 * HD 118508
 * HD 118889
 * HD 119124
 * HD 11964
 * HD 11964 b
 * HD 11964 c
 * HD 119921
 * HD 120084
 * HD 12039
 * HD 12055
 * HD 120987
 * HD 121228
 * HD 12139
 * HD 121474
 * HD 121504
 * HD 121504 b
 * HD 122430
 * HD 122430 b
 * HD 122563
 * HD 123569
 * HD 123657
 * HD 1237
 * HD 124639
 * HD 12467
 * HD 125040
 * HD 125072
 * HD 125288
 * HD 125351
 * HD 125442
 * HD 125595
 * HD 125612
 * HD 125612 b
 * HD 125612 c
 * HD 125612 d
 * HD 125628
 * HD 125658
 * HD 125823
 * HD 126009
 * HD 126053
 * HD 126128
 * HD 126141
 * HD 126200
 * HD 126271
 * HD 12661
 * HD 12661 b
 * HD 12661 c
 * HD 126614
 * HD 126614 Ab
 * HD 1273
 * HD 127304
 * HD 127726
 * HD 128093
 * HD 128198
 * HD 128311
 * HD 128311 b
 * HD 128311 c
 * HD 128333
 * HD 128429
 * HD 12846
 * HD 129116
 * HD 129132
 * HD 129357
 * HD 129445
 * HD 129445 b
 * HD 129456
 * HD 129685
 * HD 130084
 * HD 130144
 * HD 130322
 * HD 130322 b
 * HD 130458
 * HD 130603
 * HD 130917
 * HD 130948
 * HD 131040
 * HD 131399
 * HD 131399 Ab
 * HD 131473
 * HD 131496
 * HD 131551
 * HD 131664
 * HD 13189
 * HD 132029
 * HD 132406
 * HD 132406 b
 * HD 132563
 * HD 133002
 * HD 133131
 * HD 133600
 * HD 133683
 * HD 134060
 * HD 134064
 * HD 134335
 * HD 134439/HD 134440
 * HD 134606
 * HD 134687
 * HD 135438
 * HD 135530
 * HD 135944
 * HD 136118
 * HD 136118 b
 * HD 137058
 * HD 137388
 * HD 137509
 * HD 138573
 * HD 139139
 * HD 13931
 * HD 13931 b
 * HD 139357
 * HD 139357 b
 * HD 139664
 * HD 140283
 * HD 140913
 * HD 141569
 * HD 141846
 * HD 141937
 * HD 141937 b
 * HD 142
 * HD 142 b
 * HD 142022
 * HD 142022 Ab
 * HD 142245
 * HD 142250
 * HD 142415
 * HD 142415 b
 * HD 142527
 * HD 143009
 * HD 143183
 * HD 143361
 * HD 143361 b
 * HD 143436
 * HD 143699
 * HD 143787
 * HD 14412
 * HD 145377
 * HD 145377 b
 * HD 145457
 * HD 1461
 * HD 1461 b
 * HD 14622
 * HD 146389
 * HD 146624
 * HD 147018
 * HD 147018 b
 * HD 147018 c
 * HD 147506
 * HD 147513
 * HD 147513 b
 * HD 148156
 * HD 148156 b
 * HD 148427
 * HD 148427 b
 * HD 149026
 * HD 149026 b
 * HD 149143
 * HD 149143 b
 * HD 149382
 * HD 149837
 * HD 149989
 * HD 150136
 * HD 150248
 * HD 150576
 * HD 150706
 * HD 15082
 * HD 15115
 * HD 151566
 * HD 151613
 * HD 151932
 * HD 151967
 * HD 152010
 * HD 152079
 * HD 152079 b
 * HD 152082
 * HD 153053
 * HD 153201
 * HD 153221
 * HD 153261
 * HD 153370
 * HD 153791
 * HD 153950
 * HD 153950 b
 * HD 154088
 * HD 154345
 * HD 154345 b
 * HD 154577
 * HD 154672
 * HD 154672 b
 * HD 154857
 * HD 154857 b
 * HD 154857 c
 * HD 155035
 * HD 155233 b
 * HD 15524
 * HD 155358
 * HD 155358 b
 * HD 155358 c
 * HD 15558
 * HD 156091
 * HD 156279
 * HD 156331
 * HD 156411
 * HD 156411 b
 * HD 156668
 * HD 156668 b
 * HD 156768
 * HD 156846
 * HD 156846 b
 * HD 157661
 * HD 157662
 * HD 157753
 * HD 157819
 * HD 158220
 * HD 158476
 * HD 158614
 * HD 158633
 * HD 15920
 * HD 159868
 * HD 159868 b
 * HD 16004
 * HD 16028
 * HD 160342
 * HD 160529
 * HD 1606
 * HD 16175
 * HD 16175 b
 * HD 161840
 * HD 161988
 * HD 162020
 * HD 162826
 * HD 163145
 * HD 163376
 * HD 163607 b
 * HD 163607 c
 * HD 163840
 * HD 16417 b
 * HD 164427
 * HD 164509
 * HD 164595
 * HD 164595 b
 * HD 164604
 * HD 164604 b
 * HD 164712
 * HD 164922
 * HD 164922 b
 * HD 164922 c
 * HD 165185
 * HD 165189
 * HD 165259
 * HD 165493
 * HD 165516
 * HD 165634
 * HD 166
 * HD 166066
 * HD 166724
 * HD 167042
 * HD 167042 b
 * HD 167257
 * HD 16754
 * HD 16760
 * HD 167665
 * HD 167818
 * HD 167965
 * HD 168009
 * HD 168443
 * HD 168443 b
 * HD 168607
 * HD 168625
 * HD 168746
 * HD 1690
 * HD 169405
 * HD 16955
 * HD 169830
 * HD 169830 b
 * HD 169830 c
 * HD 170469
 * HD 170469 b
 * HD 170657
 * HD 17092
 * HD 17092 b
 * HD 171028
 * HD 171028 b
 * HD 171238
 * HD 171238 b
 * HD 171301
 * HD 17156
 * HD 17156 b
 * HD 17156 c
 * HD 171978
 * HD 172044
 * HD 172051
 * HD 172555
 * HD 172910
 * HD 173416
 * HD 173416 b
 * HD 173417
 * HD 173780
 * HD 173791
 * HD 173936
 * HD 174179
 * HD 174569
 * HD 175167
 * HD 175167 b
 * HD 175443
 * HD 175535
 * HD 175541
 * HD 175541 b
 * HD 175740
 * HD 176051
 * HD 176527
 * HD 176871
 * HD 177808
 * HD 177809
 * HD 177830
 * HD 178233
 * HD 178911
 * HD 178911 Bb
 * HD 179070
 * HD 179079
 * HD 179079 b
 * HD 17925
 * HD 179791
 * HD 179821
 * HD 179949
 * HD 179949 b
 * HD 180262
 * HD 180314
 * HD 180450
 * HD 180555
 * HD 180902
 * HD 180902 b
 * HD 181068
 * HD 181342
 * HD 181342 b
 * HD 181433
 * HD 181433 b
 * HD 181433 c
 * HD 181433 d
 * HD 181720
 * HD 181720 b
 * HD 182475
 * HD 182681
 * HD 183143
 * HD 183144
 * HD 183263
 * HD 183263 b
 * HD 183263 c
 * HD 185018
 * HD 185269
 * HD 185269 b
 * HD 185435
 * HD 186302
 * HD 187085
 * HD 187085 b
 * HD 187123
 * HD 187123 b
 * HD 187123 c
 * HD 187734
 * HD 187923
 * HD 188015
 * HD 188015 b
 * HD 188385
 * HD 188405
 * HD 188753
 * HD 189245
 * HD 189276
 * HD 189567
 * HD 18970
 * HD 189733
 * HD 189733 b
 * HD 189831
 * HD 190007
 * HD 190056
 * HD 190228
 * HD 190647
 * HD 190647 b
 * HD 190984
 * HD 190984 b
 * HD 191104
 * HD 191760
 * HD 191806
 * HD 191806 b
 * HD 191939
 * HD 191984
 * HD 192263
 * HD 192263 b
 * HD 192310
 * HD 192685
 * HD 192699
 * HD 192699 b
 * HD 19275
 * HD 193664
 * HD 194244
 * HD 19467 B
 * HD 195019
 * HD 195019 b
 * HD 195564
 * HD 196050
 * HD 196050 b
 * HD 196761
 * HD 196885
 * HD 196885 Ab
 * HD 197027
 * HD 197036
 * HD 19789
 * HD 199442
 * HD 199942
 * HD 20003
 * HD 200375
 * HD 200661
 * HD 200964
 * HD 201298
 * HD 201507
 * HD 202206
 * HD 202206 c
 * HD 202259
 * HD 202628
 * HD 202951
 * HD 203030
 * HD 20367
 * HD 20367 b
 * HD 203842
 * HD 203857
 * HD 2039
 * HD 2039 b
 * HD 204313
 * HD 204313 b
 * HD 204521
 * HD 20468
 * HD 205739
 * HD 205739 b
 * HD 205765
 * HD 205877
 * HD 206267
 * HD 20644
 * HD 206610 b
 * HD 207129
 * HD 20781
 * HD 20781 b
 * HD 20781 c
 * HD 20782
 * HD 20782 b
 * HD 208177
 * HD 208487
 * HD 208487 b
 * HD 208527
 * HD 20868
 * HD 20868 b
 * HD 209458
 * HD 209458 b
 * HD 210277
 * HD 210277 b
 * HD 210434
 * HD 210702
 * HD 210702 b
 * HD 21071
 * HD 211073
 * HD 211392
 * HD 211415
 * HD 211575
 * HD 212301
 * HD 212301 b
 * HD 212771 b
 * HD 21278
 * HD 213240
 * HD 213240 b
 * HD 213429
 * HD 21389
 * HD 214448
 * HD 21447
 * HD 214810
 * HD 215114
 * HD 215152
 * HD 215456
 * HD 215497
 * HD 215497 b
 * HD 215497 c
 * HD 216446
 * HD 216718
 * HD 216770
 * HD 216770 b
 * HD 217107
 * HD 217107 b
 * HD 217107 c
 * HD 217382
 * HD 21749
 * HD 217786
 * HD 218061
 * HD 218566
 * HD 219077
 * HD 219134
 * HD 219134 b
 * HD 219134 c
 * HD 219134 d
 * HD 219134 f
 * HD 219134 g
 * HD 219134 h
 * HD 219279
 * HD 219623
 * HD 219659
 * HD 219828
 * HD 219828 b
 * HD 220035
 * HD 220074
 * HD 220105
 * HD 220466
 * HD 220689
 * HD 220766
 * HD 220773
 * HD 221148
 * HD 221246
 * HD 221287
 * HD 221525
 * HD 221776
 * HD 222093
 * HD 222095
 * HD 222109
 * HD 222155
 * HD 222399
 * HD 222582
 * HD 222582 b
 * HD 223229
 * HD 223311
 * HD 224635
 * HD 224693
 * HD 224693 b
 * HD 224801
 * HD 225218
 * HD 22663
 * HD 22781
 * HD 23079
 * HD 23079 b
 * HD 23089
 * HD 23127
 * HD 23127 b
 * HD 231701
 * HD 231701 b
 * HD 23319
 * HD 233731
 * HD 23514
 * HD 23596
 * HD 23596 b
 * HD 23753
 * HD 240210
 * HD 240210 b
 * HD 240237
 * HD 240237 b
 * HD 24040
 * HD 24040 b
 * HD 240429/240430
 * HD 24071
 * HD 24160
 * HD 2421
 * HD 24479
 * HD 24480
 * HD 24496
 * HD 24496 Ab
 * HD 24496 Ab
 * HD 24496 Ab
 * HD 24496 Ab
 * HD 24496 Ab
 * HD 24496 Ab
 * HD 2454
 * HD 25171
 * HD 256
 * HD 259431
 * HD 2638
 * HD 2638 b
 * HD 268835
 * HD 269810
 * HD 27245
 * HD 27631
 * HD 27631 b
 * HD 2767
 * HD 27894
 * HD 27894 b
 * HD 28185
 * HD 28185 b
 * HD 28254
 * HD 28254 b
 * HD 28375
 * HD 28527
 * HD 290327
 * HD 290327 b
 * HD 2942
 * HD 29573
 * HD 29587
 * HD 29697
 * HD 3
 * HD 30177
 * HD 30177 b
 * HD 30442
 * HD 30453
 * HD 30562
 * HD 30562 b
 * HD 30963
 * HD 31093
 * HD 316285
 * HD 3167
 * HD 32188
 * HD 32309
 * HD 3240
 * HD 32450
 * HD 32518
 * HD 32518 b
 * HD 330075
 * HD 330075 b
 * HD 33203
 * HD 3322
 * HD 33283
 * HD 33283 b
 * HD 3346
 * HD 33463
 * HD 33564
 * HD 33564 b
 * HD 33579
 * HD 33636
 * HD 34445
 * HD 34445 b
 * HD 34557
 * HD 34626
 * HD 34790
 * HD 34880
 * HD 34968
 * HD 34989
 * HD 35519
 * HD 35520
 * HD 35619
 * HD 35984
 * HD 36041
 * HD 36112
 * HD 36678
 * HD 36780
 * HD 36960
 * HD 37017
 * HD 37124
 * HD 37124 b
 * HD 37124 c
 * HD 37124 d
 * HD 37519
 * HD 37605
 * HD 37605 b
 * HD 37646
 * HD 37756
 * HD 37974
 * HD 38282
 * HD 38529
 * HD 38529 b
 * HD 38801 b
 * HD 38858
 * HD 39225
 * HD 39901
 * HD 40307
 * HD 40307 b
 * HD 40307 c
 * HD 40307 d
 * HD 40307 e
 * HD 40307 f
 * HD 40307 g
 * HD 40409
 * HD 40657
 * HD 40873
 * HD 40979
 * HD 40979 b
 * HD 41004
 * HD 41004 Ab
 * HD 4113
 * HD 4113 b
 * HD 41162
 * HD 41248
 * HD 41534
 * HD 41742/41700
 * HD 4203
 * HD 4203 b
 * HD 4208
 * HD 4208 b
 * HD 42540
 * HD 42818
 * HD 42936
 * HD 4308
 * HD 4308 b
 * HD 4313
 * HD 4313 b
 * HD 43197
 * HD 43197 b
 * HD 43587
 * HD 43691
 * HD 43691 b
 * HD 43848
 * HD 4391
 * HD 44120
 * HD 44131
 * HD 44219
 * HD 44219 b
 * HD 44594
 * HD 44780
 * HD 45184
 * HD 45350
 * HD 45350 b
 * HD 45364
 * HD 45364 b
 * HD 45364 c
 * HD 45652
 * HD 45652 b
 * HD 4628
 * HD 46375
 * HD 46375 b
 * HD 47186
 * HD 47186 b
 * HD 47186 c
 * HD 4732
 * HD 47366
 * HD 4747
 * HD 47536
 * HD 47536 b
 * HD 47536 c
 * HD 47667
 * HD 4778
 * HD 48099
 * HD 48265
 * HD 48265 b
 * HD 49268
 * HD 49674
 * HD 49674 b
 * HD 49798
 * HD 49878
 * HD 49933
 * HD 49976
 * HD 50064
 * HD 50235
 * HD 50281
 * HD 50499
 * HD 50499 b
 * HD 50554
 * HD 50554 b
 * HD 51799
 * HD 52265
 * HD 52265 b
 * HD 53143
 * HD 5319
 * HD 5319 b
 * HD 53705/53706/53680
 * HD 53811
 * HD 5388
 * HD 5388 b
 * HD 54893
 * HD 5608
 * HD 56405
 * HD 56456
 * HD 56577
 * HD 56618
 * HD 57197
 * HD 57821
 * HD 5789/5788
 * HD 59612
 * HD 59686
 * HD 59686 b
 * HD 5980
 * HD 59890
 * HD 6
 * HD 60532
 * HD 60532 b
 * HD 60532 c
 * HD 60803
 * HD 60863
 * HD 61005
 * HD 6114
 * HD 61248
 * HD 61330
 * HD 61772
 * HD 61831
 * HD 63032
 * HD 63399
 * HD 63454
 * HD 63454 b
 * HD 63744
 * HD 63765
 * HD 63922
 * HD 6434
 * HD 6434 b
 * HD 64440
 * HD 64740
 * HD 64760
 * HD 65216
 * HD 65216 b
 * HD 65750
 * HD 65810
 * HD 66141
 * HD 66428
 * HD 66428 b
 * HD 6718
 * HD 6718 b
 * HD 68601
 * HD 68988
 * HD 68988 b
 * HD 68988 c
 * HD 69142
 * HD 69830
 * HD 69830 b
 * HD 69830 c
 * HD 69830 d
 * HD 69863
 * HD 70060
 * HD 70555
 * HD 70573
 * HD 70573 b
 * HD 70642
 * HD 70642 b
 * HD 70930
 * HD 71334
 * HD 7199
 * HD 72108
 * HD 72561
 * HD 72659
 * HD 72659 b
 * HD 72922
 * HD 73256
 * HD 73256 b
 * HD 73267
 * HD 73267 b
 * HD 73389
 * HD 73390
 * HD 73526
 * HD 73526 b
 * HD 73526 c
 * HD 73534
 * HD 73534 b
 * HD 73634
 * HD 74156
 * HD 74156 b
 * HD 74156 c
 * HD 74180
 * HD 74272
 * HD 74389
 * HD 74423
 * HD 7449
 * HD 74772
 * HD 75063
 * HD 75289
 * HD 75289 b
 * HD 75710
 * HD 75898
 * HD 76151
 * HD 76653
 * HD 76700
 * HD 76700 b
 * HD 76728
 * HD 76805
 * HD 77258
 * HD 77370
 * HD 77912
 * HD 78004
 * HD 7853
 * HD 7924
 * HD 7924 b
 * HD 79447
 * HD 79498
 * HD 79917
 * HD 79940
 * HD 80230
 * HD 80606 and HD 80607
 * HD 80606 b
 * HD 81040
 * HD 81040 b
 * HD 81101
 * HD 81799
 * HD 81817
 * HD 82205
 * HD 82741
 * HD 82785
 * HD 82886
 * HD 82943
 * HD 82943 b
 * HD 82943 c
 * HD 83058
 * HD 83095
 * HD 83183
 * HD 83443
 * HD 83443 b
 * HD 83446
 * HD 83944
 * HD 83953
 * HD 84117
 * HD 84810
 * HD 8535
 * HD 8535 b
 * HD 85390
 * HD 85390 b
 * HD 85512
 * HD 85512 b
 * HD 85622
 * HD 85725
 * HD 8574
 * HD 8574 b
 * HD 85859
 * HD 85951
 * HD 86081
 * HD 86226
 * HD 86226 b
 * HD 86264
 * HD 86264 b
 * HD 8673
 * HD 87643
 * HD 87822
 * HD 87883
 * HD 87883 b
 * HD 88133
 * HD 88133 b
 * HD 88206
 * HD 88218
 * HD 88366
 * HD 88522
 * HD 88809
 * HD 88836
 * HD 88955
 * HD 88981
 * HD 89307
 * HD 89307 b
 * HD 89345 b
 * HD 895
 * HD 89744
 * HD 89744 b
 * HD 89890
 * HD 89998
 * HD 90089
 * HD 90156
 * HD 90156 b
 * HD 90264
 * HD 90853
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 * HD 91312
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 * HD 91496
 * HD 91942
 * HD 92036
 * HD 92063
 * HD 92589
 * HD 92788
 * HD 92788 b
 * HD 92845
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 * HD 93083
 * HD 93083 b
 * HD 93129
 * HD 93194
 * HD 93205
 * HD 93250
 * HD 93385
 * HD 93403
 * HD 93607
 * HD 93833
 * HD 9446
 * HD 9446 b
 * HD 9446 c
 * HD 94510
 * HD 95086 b
 * HD 95109
 * HD 95370
 * HD 9578
 * HD 9578 b
 * HD 95808
 * HD 96167
 * HD 96167 b
 * HD 96566
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 * HD 96819
 * HD 96919
 * HD 97048
 * HD 97413
 * HD 97658
 * HD 97950
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 * HD 98618
 * HD 98649
 * HD 98800
 * HD 99109
 * HD 99109 b
 * HD 99706
 * HD 9986
 * HD 99922
 * HD+
 * HDF Explorer
 * HE 0437-5439
 * HE 1256-2738
 * HE 1327-2326
 * HE 1523-0901
 * HE 2359-2844
 * HE0107-5240
 * HE0450-2958
 * HEAO Program
 * HEAT 1X Tycho Brahe
 * HED meteorite
 * HEGRA
 * HERACLES (spacecraft)
 * HESS J1857+0263
 * HFLS3
 * HG-3 (rocket engine)
 * HGM-25A Titan I
 * HH 1/2
 * HH 111
 * HH 24-26
 * HH 34
 * HH 46/47
 * HI-SEAS
 * HII galaxy
 * HIP 100963
 * HIP 116454 b
 * HIP 11915
 * HIP 11915 b
 * HIP 11952
 * HIP 12961
 * HIP 13044
 * HIP 14810
 * HIP 14810 b
 * HIP 14810 c
 * HIP 14810 d
 * HIP 41378
 * HIP 41378 b
 * HIP 41378 c
 * HIP 41378 d
 * HIP 41378 e
 * HIP 41378 f
 * HIP 5158
 * HIP 5158 b
 * HIP 5158 c
 * HIP 56948
 * HIP 57050
 * HIP 57274
 * HIP 57274 d
 * HIP 65426 b
 * HIP 70849
 * HIP 70849 b
 * HIP 78530 b
 * HIP 79431
 * HIP 79431 b
 * HIP 85605
 * HIPAS Observatory
 * HIPASS
 * HIRLAM
 * HK Aquarii
 * HL Tau 76
 * HL Tauri
 * HL-20 Personnel Launch System
 * HL-2M
 * HL-42 (spacecraft)
 * HLX-1
 * HM 1
 * HM4
 * HM7B
 * HMS Driver (1840)
 * HN Andromedae
 * HN Pegasi
 * HNSKY
 * HO Telescopii
 * HOPE-X
 * HOPS 383
 * HP Lyrae
 * HPGP
 * HR 1614
 * HR 178
 * HR 1884
 * HR 2096
 * HR 244
 * HR 2554
 * HR 2562 b
 * HR 273
 * HR 297
 * HR 3082
 * HR 3159
 * HR 3220
 * HR 3384
 * HR 3407
 * HR 3643
 * HR 3803
 * HR 3830
 * HR 3833
 * HR 4049
 * HR 4072
 * HR 4102
 * HR 4138
 * HR 4177
 * HR 4180
 * HR 4339
 * HR 4458
 * HR 4699
 * HR 4729
 * HR 4796
 * HR 4887
 * HR 511
 * HR 5110
 * HR 515
 * HR 5171
 * HR 5183 b
 * HR 5256
 * HR 5401
 * HR 5553
 * HR 5955
 * HR 6135
 * HR 6384
 * HR 6594
 * HR 6801
 * HR 6806
 * HR 6819
 * HR 6875
 * HR 6902
 * HR 7135
 * HR 7484
 * HR 7578
 * HR 7703
 * HR 7722 b
 * HR 7722 c
 * HR 7955
 * HR 8442
 * HR 858
 * HR 8768
 * HR 8799
 * HR 8799 b
 * HR 8799 c
 * HR 8799 d
 * HR 8799 e
 * HR 9038
 * HR Carinae
 * HR Delphini
 * HR Lyrae
 * HRG gyrocompass
 * HS-333
 * HS-376
 * HS-393
 * HSL (Fortran library)
 * HT-7
 * HTV-1
 * HU Aquarii
 * HU Delphini
 * HUDF-JD2
 * HV 11417
 * HV 11423
 * HV 2112
 * HV 888
 * HVC 127-41-330
 * HVGC-1
 * HVS 7
 * HW Virginis
 * HXMM01
 * HY Velorum
 * HYDROSOL
 * HYFLEX
 * HYLAS 2
 * HYLAS-1
 * HYLAS-4
 * HYSPLIT
 * HZE ions
 * Haabʼ
 * Haag–Łopuszański–Sohnius theorem
 * Haas (rocket)
 * Habash al-Hasib al-Marwazi
 * Haber (crater)
 * Haber's rule
 * Haber–Weiss reaction
 * Habitability of K-type main-sequence star systems
 * Habitability of binary star systems
 * Habitability of natural satellites
 * Habitability of red dwarf systems
 * Habitable Exoplanet Imaging Mission
 * Habitable Planets for Man
 * Habitable exomoon
 * Habitable exoplanet
 * Habitat
 * Habitation Extension Modules
 * Habitation Module
 * Hachimoji DNA
 * Hachure map
 * Hack's law
 * Hackerspace Global Grid
 * HadCM3
 * HadGEM1
 * Hadad
 * Hadal zone
 * Haddocks' Eyes
 * Hadean
 * Hadesarchaea
 * Hadley (crater)
 * Hadley Rille meteorite
 * Hadley cell
 * Hadley–Apennine
 * Hadriacus Mons
 * Hadron epoch
 * Haegemonia: Legions of Iron
 * Hafele–Keating experiment
 * Hagal dune field
 * Hagbard Jonassen
 * Hagecius (crater)
 * Hagedorn temperature
 * Hagen (crater)
 * Hagen–Rubens relation
 * Haggart Observatory
 * Hahn (crater)
 * Hai-Genti
 * Haidinger (crater)
 * Hail Columbia (film)
 * Hainzel (crater)
 * Hair ice
 * Hairy Head
 * Hairy slit-faced bat
 * Haiyantang
 * Hajime Sorayama
 * Hakeem M. Oluseyi
 * Hakkı Boran Ögelman
 * Hakucho
 * Hakuto
 * Hal A. Weaver
 * Haladaptatus
 * Halalkalicoccus
 * Halbwelt Kultur
 * Halcyon 6
 * Haldane (Martian crater)
 * Haldane (lunar crater)
 * Hale (Martian crater)
 * Hale (lunar crater)
 * Hale Solar Laboratory
 * Hale Telescope
 * Haleakalā Observatory
 * Haleets
 * Haley Gomez
 * Half flux diameter
 * Half-Breeds on Venus
 * Half-Mile Telescope
 * Half-value layer
 * Halfmann Teleskoptechnik
 * Halimede (moon)
 * Hall (lunar crater)
 * Hallandian-Danopolonian event
 * Halley (Martian crater)
 * Halley (lunar crater)
 * Halley (nightclub)
 * Halley Armada
 * Halley's Comet
 * Halley's Comet (video game)
 * HalloVeen
 * HalloWeekends
 * HalloWishes
 * Hallowe'en Party
 * Halloween
 * Halloween (1931 film)
 * Halloween (1978 film)
 * Halloween (2018 film)
 * Halloween (American Horror Story)
 * Halloween (Brooklyn Nine-Nine)
 * Halloween (Buffy the Vampire Slayer)
 * Halloween (Dead Kennedys song)
 * Halloween (Mannheim Steamroller album)
 * Halloween (Misfits song)
 * Halloween (Modern Family)
 * Halloween (The Office)
 * Halloween (children's book)
 * Halloween (franchise)
 * Halloween (poem)
 * Halloween (soundtrack)
 * Halloween (video game)
 * Halloween 3: AwesomeLand
 * Halloween 4: The Return of Michael Myers (soundtrack)
 * Halloween ABC
 * Halloween Adventure
 * Halloween Candy
 * Halloween Hall o' Fame
 * Halloween Haunt (Canada's Wonderland)
 * Halloween Horror Nights
 * Halloween II (Brooklyn Nine-Nine)
 * Halloween II (soundtrack)
 * Halloween III (Brooklyn Nine-Nine)
 * Halloween III: Season of the Witch (soundtrack)
 * Halloween IV (Brooklyn Nine-Nine)
 * Halloween IV: Revenge of Rod Skyhook
 * Halloween Is Grinch Night
 * Halloween Night
 * Halloween Night (song)
 * Halloween Party (song)
 * Halloween Screams
 * Halloween Spooktacular
 * Halloween Surprise
 * Halloween cake
 * Halloween card
 * Halloween costume
 * Halloween in the Castro
 * Halloween of Horror
 * Halloween on Franklin Street
 * Halloween on Spooner Street
 * Halloween solar storms, 2003
 * Halloween with the New Addams Family
 * Halloween: Monster Mix
 * Halloween: Sweet Tooth
 * Halloweentown (film series)
 * Halloweentown (film)
 * Halloweentown II: Kalabar's Revenge
 * Hallucination Generation
 * Halmahera boobook
 * Halo (crater)
 * Halo (franchise)
 * Halo 2
 * Halo 2600
 * Halo 3
 * Halo 3: ODST
 * Halo 4
 * Halo 5: Guardians
 * Halo Array
 * Halo Infinite
 * Halo Online
 * Halo Wars
 * Halo Wars 2
 * Halo mass function
 * Halo occupation distribution
 * Halo orbit
 * Halo.Bungie.Org
 * Halo: Combat Evolved
 * Halo: Combat Evolved Anniversary
 * Halo: Reach
 * Halo: Spartan Assault
 * Halo: Spartan Strike
 * Halo: The Master Chief Collection
 * Haloalcalophilium
 * Haloarchaea
 * Haloarcula
 * Halobacteriaceae
 * Halobacteriales
 * Halobacterium
 * Halobacterium noricense
 * Halobacterium salinarum
 * Halobaculum
 * Halobaculum gomorrense
 * Halobiforma
 * Halobiforma haloterrestris
 * Halobiotus
 * Halochromism
 * Halocin
 * Halococcus
 * Halococcus dombrowskii
 * Halococcus salifodinae
 * Haloechinothrix alba
 * Halogeometricum
 * Halomicrobium
 * Halomonas
 * Halophile
 * Halopiger
 * Haloplanus
 * Haloplanus natans
 * Haloplanus salinarium
 * Haloquadratum
 * Halorhabdus
 * Halorhodospira neutriphila
 * Halorubrum
 * Halosarcina
 * Halosere
 * Halosimplex
 * Halostagnicola
 * Halostagnicola larsenii
 * Haloterrigena
 * Haloterrigena longa
 * Halothermal circulation
 * Halotolerance
 * Halovivax
 * Hals (crater)
 * Halton Arp
 * Haly Abenragel
 * Ham (chimpanzee)
 * Ham Lambert
 * Hamal
 * Hamanasu (train)
 * Hamburg Observatory
 * Hamburg Planetarium
 * Hamburg School of Astrology
 * Hamburg/ESO Survey
 * Hamed Gohar
 * Hamilton (crater)
 * Hamilton Astronomical Society Observatory
 * Hamilton Jeffers
 * Hamilton Lanphere Smith
 * Hamilton–Jacobi–Einstein equation
 * Hamlet (crater)
 * Hamlet's Mill
 * Hammaguir
 * Hammar Lacus
 * Hammer (film)
 * Hammerfall (novel)
 * Hammock
 * Hammock camping
 * Hamori (crater)
 * Hampshire Hog
 * Hampstead Scientific Society
 * Hampton Court astronomical clock
 * Hamun
 * Han (trilobite)
 * Han Kan (crater)
 * Han Solo
 * Han Zhanwen
 * Hanany–Witten transition
 * Hanazuki: Full of Treasures
 * Hand and Heart, Peterborough
 * Hand and Shears
 * Hand-held maneuvering unit
 * Handbook of 809
 * Handbook of Australian Soils
 * Handel (crater)
 * Handsome Jack
 * Handwashing in Judaism
 * Hanford Site
 * Hangar 18 (song)
 * Hangenberg event
 * Hanging glacier
 * Hangup (film)
 * Hank Berger
 * Hank Henshaw
 * Hank Reinhardt
 * Hankasalmi Observatory
 * Hanna von Hoerner
 * Hannah Holliday Stewart
 * Hannah Wants
 * Hannes Alfvén
 * Hannes Alfvén Prize
 * Hannes Bok
 * Hanno (crater)
 * Hanns Dieter Hüsch
 * Hanns Hörbiger
 * Hanny's Voorwerp
 * Hanover Theatre for the Performing Arts
 * Hans Albert Einstein
 * Hans Dijkstal
 * Hans E. Lau
 * Hans Egede Medal
 * Hans Fichtner
 * Hans Freudenthal
 * Hans Geelmuyden
 * Hans Hass Award
 * Hans Hüter
 * Hans Jenny (pedologist)
 * Hans Jonas
 * Hans Kammler
 * Hans Koenigsmann
 * Hans Lipperhey
 * Hans Ludendorff
 * Hans Michael Maitzen
 * Hans Momsen
 * Hans Moritz von Brühl
 * Hans Oeschger Medal
 * Hans Oleak
 * Hans Robert Scultetus
 * Hans Schindler Bellamy
 * Hans Schjellerup
 * Hans Schlegel
 * Hans Scholl (astronomer)
 * Hans Severin Jelstrup
 * Hans Stefan Santesson
 * Hans Stille Medal
 * Hans Thirring
 * Hans Waldemar Wessolowski
 * Hans Zarkov
 * Hans von Storch
 * Hans-Emil Schuster
 * Hans-Heinrich Voigt
 * Hans-Joachim Haase (optician)
 * Hans-Jürgen Treder
 * Hans-Walter Rix
 * Hansen (crater)
 * Hansmukh Rathod
 * Hansteen (crater)
 * Hantsavichy Radar Station
 * Hanul cu Tei
 * Hanumant Shankar Sawant
 * Haoman 17
 * Hapke parameters
 * Hapkeite
 * Haplocambids
 * Happily Ever After (1990 film)
 * Happily Ever After (Magic Kingdom)
 * Happy Halloween, Scooby-Doo!
 * Harald Lesch
 * Harassed (1964 film)
 * Harbor
 * Harbour Main Group
 * Harcourt Group
 * Hard Labor Creek Observatory
 * Hard Mobile Launcher
 * Hard X-ray Modulation Telescope
 * Hard start
 * Hardbodies 2
 * Hardcore Station
 * Harden (crater)
 * Harding (crater)
 * Hardpan
 * Hardscape
 * Hardsoul
 * Hardspace: Shipbreaker
 * Hardtack Teak
 * Hardwar (video game)
 * Hardware Wars
 * Hardy's Well
 * Hare and Hounds, East Sheen
 * Hare and Hounds, St Albans
 * Hare-Way to the Stars
 * Haredevil Hare
 * Harestua Solar Observatory
 * Haret (crater)
 * Hargraves (crater)
 * Hargreaves (crater)
 * Hari Keshab Sen
 * Hari Kunzru
 * Haridatta
 * Harisu
 * Harkhebi
 * Harkhebi (crater)
 * Harlan (crater)
 * Harlan Ellison
 * Harlan J. Smith Telescope
 * Harlan James Smith
 * Harlan True Stetson
 * Harland Epps
 * Harley Rutledge
 * Harlock: Space Pirate
 * Harlow Shapley
 * Harmakhis Vallis
 * Harmful algal bloom
 * HarmoKnight
 * Harmonia Macrocosmica
 * Harmonic Convergence
 * Harmonic superspace
 * Harmonices Mundi
 * Harmonised monitoring scheme
 * Harmony (ISS module)
 * Haro 11
 * Harold Alden
 * Harold Armytage Sanders
 * Harold C. Urey Prize
 * Harold Curlewis
 * Harold D. Babcock
 * Harold F. Levison
 * Harold Finger
 * Harold Fürth
 * Harold G. White
 * Harold Jacoby
 * Harold Johnson (astronomer)
 * Harold Knox-Shaw
 * Harold La Borde
 * Harold Littler
 * Harold Masursky
 * Harold P. Eubank
 * Harold Reitsema
 * Harold Spencer Jones
 * Harold T. Wilkins
 * Harold Urey
 * Harold W. McCauley
 * Harold Wellman
 * Harold Zirin
 * Harpalus (crater)
 * Harpalyke (moon)
 * Harpocrates
 * Harpos Concert Theatre
 * Harran Sulci
 * Harrie Massey
 * Harriet H. Malitson
 * Harriet White Fisher
 * Harriet's Halloween Candy
 * Harrington Arms, Gawsworth
 * Harriot (crater)
 * Harris Geospatial
 * Harrison Schmitt
 * Harry Arthur Crowhurst
 * Harry Bates (author)
 * Harry Brittain
 * Harry E. Huffman
 * Harry Eckler
 * Harry Edwin Wood
 * Harry Godwin
 * Harry Goodwin (cricketer)
 * Harry Harrison (writer)
 * Harry Hemley Plaskett
 * Harry Julian Allen
 * Harry Kloor
 * Harry Knowles
 * Harry Kroto
 * Harry Lange (film designer)
 * Harry McSween
 * Harry Romero
 * Harry Yandell Benedict
 * Harry's New York Bar
 * Hartebeesthoek Radio Astronomy Observatory
 * Hartig net
 * Hartland Snyder
 * Hartle-Thorne metric
 * Hartle–Hawking state
 * Hartmann (crater)
 * Hartmann mask
 * Hartmut Jahreiß
 * Hartmut Zohm
 * Hartree Centre
 * Hartung–Boothroyd Observatory
 * Hartwig (Martian crater)
 * Hartwig (lunar crater)
 * Harunobu (crater)
 * Harvard College Observatory
 * Harvard Radio Meteor Project
 * Harvard–Smithsonian Center for Astrophysics
 * Harvesting lightning energy
 * Harvey (crater)
 * Harvey Birdman, Attorney at Law
 * Harvey H. Nininger
 * Harvey Pirie
 * Harvey Raymond Butcher
 * Harvey's Brewery
 * Hase (crater)
 * Haseb (rocket)
 * Haseb-i Tabari
 * Hasegawa–Mima equation
 * Haskin (crater)
 * Hassan (crater)
 * Hasselblad
 * Hastings Museum
 * Hastur Lord
 * Hatanaka (crater)
 * Hatchet II
 * Hatchet III
 * Hate Crime (2013 film)
 * Hathor
 * Hathor (month)
 * Hati (moon)
 * Hatsuyume
 * Haua
 * Haughton impact crater
 * Haughton–Mars Project
 * Haulani (crater)
 * Haumea
 * Haumea (mythology)
 * Haumea family
 * Haunted (The Vampire Diaries)
 * Haunted attraction (simulated)
 * Hauptmann (crater)
 * Hausa animism
 * Hausen (crater)
 * Hausmannite
 * Haute-Provence Observatory
 * Hava Hornung
 * Havana Plan Piloto
 * Have Rocket, Will Travel
 * Have Space Suit—Will Travel
 * Have a Cigar
 * Haven (video game)
 * Haven: Call of the King
 * Haverah Park experiment
 * Haviland Crater
 * Hawaii Ocean Time-series
 * Hawaii Undersea Research Laboratory
 * Hawaiian Trough
 * Hawera Observatory
 * Hawk Inn, Haslington
 * HawkSat I
 * Hawke (crater)
 * Hawkgirl
 * Hawkgirl (Kendra Saunders)
 * Hawking (2004 film)
 * Hawking (2013 film)
 * Hawking energy
 * Hawking radiation
 * Hawking-Page phase transition
 * Hawkman (Carter Hall)
 * Hawkman (Fel Andar)
 * Hawkman (Katar Hol)
 * Hawkmistress!
 * Hawkwoman
 * Haworth (crater)
 * Hawthorne (crater)
 * Haxonite
 * Hayabusa
 * Hayabusa (train)
 * Hayabusa Mk2
 * Hayabusa Terra
 * Hayabusa2
 * Hayabusa: Harukanaru Kikan
 * Hayashi limit
 * Hayashi track
 * Hayato (satellite)
 * Hayden Memorial Geological Award
 * Haydn (crater)
 * Hayford (crater)
 * Hayn (crater)
 * Haystack Catena
 * Haystack Observatory
 * Hayward metric
 * Hayyim Selig Slonimski
 * Hazard
 * Hazard analysis
 * Hazardous Substances Data Bank
 * Hazards of outdoor recreation
 * Hazcam
 * Hazchem
 * He Fell into a Dark Hole
 * He Knows You're Alone
 * He Zehui
 * He's Simple, He's Dumb, He's the Pilot.
 * He-Man
 * He-Man & She-Ra: A Christmas Special
 * He-Man and the Masters of the Universe
 * He-Man and the Masters of the Universe (2002 TV series)
 * He-Man and the Masters of the Universe (2012 DC comic)
 * He-Man/ThunderCats
 * He-Man: Defender of Grayskull
 * He-Man: Power of Grayskull
 * He-Man: The Most Powerful Game in the Universe
 * Head (crater)
 * Head (geology)
 * Head (hydrology)
 * Head cut (stream geomorphology)
 * Head for heights
 * Head of tide
 * Head-up display
 * Headboard (furniture)
 * Header (film)
 * Heading indicator
 * Headland
 * Headland (agriculture)
 * Headless Horseman Hayrides and Haunted Houses
 * Heads Will Roll (song)
 * Headwall
 * Headward erosion
 * Health & Place
 * Health effects of sunlight exposure
 * Health hazards of air travel
 * Health threat from cosmic rays
 * Healy (crater)
 * Heart (Chinese constellation)
 * Heart Beat, Pig Meat
 * Heart Nebula
 * Heart of Empire
 * Heart of Gold (Firefly)
 * Heart of the Alien
 * Heart of the Comet
 * Heartbeat star
 * Heat Capacity Mapping Mission
 * Heat Flow and Physical Properties Package
 * Heat Shield Rock
 * Heat Signature (video game)
 * Heat Vision and Jack
 * Heat death of the universe
 * Heat death paradox
 * Heat lightning
 * Heat pipe
 * Heat shield
 * Heat-pipe tectonics
 * Heath
 * Heather Couper
 * Heather Heart
 * Heaven (nightclub)
 * Heaven Help Us
 * Heaven Will Be Mine
 * Heaven's Reach
 * Heaven's Soldiers
 * Heavenly Daze
 * Heavenly Market enclosure
 * Heavens-Above
 * Heaviside (Martian crater)
 * Heaviside (lunar crater)
 * Heavy Metal: F.A.K.K. 2
 * Heavy metal subdwarf
 * Heavy-lift launch vehicle
 * Heazlewoodite
 * Heber Doust Curtis
 * Hebes Chasma
 * Hebes Mensa
 * Hebesuncus
 * Hebrew astronomy
 * Hebrus Valles
 * Hecataeus (crater)
 * Hecate
 * Hecates Tholus
 * Hector Fonseca
 * Hector Garrido
 * Hector Hall
 * Hector Macpherson (astronomer)
 * Hector Xtravaganza
 * Hedda Lettuce
 * Hedin (crater)
 * Heechee
 * Heel Stone
 * Heelstone Ditch
 * Hegemone (moon)
 * Hehuanshan
 * Heidelberg-Königstuhl State Observatory
 * Heidelberger Schicksalsbuch
 * Heidemarie Stefanyshyn-Piper
 * Heidi (god)
 * Heidi Cullen
 * Heidi Hammel
 * Height above sea level
 * Heiheionakeiki
 * Heikki A. Alikoski
 * Heim theory
 * Heimdal (crater)
 * Heimdall (Callistonian crater)
 * Heine (crater)
 * Heinlein (crater)
 * Heino Falcke
 * Heinrich (crater)
 * Heinrich Bruns
 * Heinrich Christian Schumacher
 * Heinrich Dau
 * Heinrich Decimator
 * Heinrich Eduard von Lade
 * Heinrich Hertz Submillimeter Telescope
 * Heinrich Kreutz
 * Heinrich Louis d'Arrest
 * Heinrich Schwabe
 * Heinrich Siedentopf
 * Heinrich Vogt (astronomer)
 * Heinrich Wilhelm Brandes
 * Heinrich Wilhelm Matthias Olbers
 * Heinsius (crater)
 * Heinz Billing
 * Heinz Hall for the Performing Arts
 * Heinz Oberhummer
 * Heinz Raether
 * Heinz-Hermann Koelle
 * Heirs of Empire
 * Heis (crater)
 * Helatrobus
 * Helberg (crater)
 * Helen B. Warner Prize for Astronomy
 * Helen Boehm
 * Helen Fricker
 * Helen Lines
 * Helen Ling
 * Helen Morgan
 * Helen Sawyer Hogg
 * Helen Sharman
 * Helen of Troy
 * Helene (moon)
 * Heliacal rising
 * Helical engine
 * Helical orbit spectrometer
 * Helically Symmetric Experiment
 * Helicam
 * Helicon (crater)
 * Helicon (river)
 * Helicon double-layer thruster
 * Helicopter 66
 * Helicopter hieroglyphs
 * Helike (moon)
 * Heliocentric Julian Day
 * Heliocentric orbit
 * Heliocentrism
 * Heliometer
 * Helion (meteoroid)
 * Helion Energy
 * Heliophysics
 * Heliophysics NASA science
 * Heliophysics Science Division
 * Helios
 * Helios (propulsion system)
 * Helios (spacecraft)
 * Helios 2 (satellite)
 * Helioscope
 * Helioseismology
 * Heliosphere
 * Heliospheric current sheet
 * Heliospheric imager
 * Heliostat
 * Helisaeus Roeslin
 * Helium flash
 * Helium focusing cone
 * Helium line ratio
 * Helium planet
 * Helium star
 * Helium-3
 * Helium-weak star
 * Helix Nebula
 * Hell (DC Comics)
 * Hell (crater)
 * Hell Ride
 * Hell Up in Harlem
 * Hell house
 * Hell on Earth 2006
 * Hell's Angels '69
 * Hell's Belles (film)
 * Hell's Bloody Devils
 * Hellas Montes
 * Hellas Planitia
 * Hellas Sat 2
 * Hellas Sat 3
 * Hellas quadrangle
 * Helldivers
 * Hellenic Aerospace Industry
 * Hellenic Journal of Geosciences
 * Hellenic Military Geographical Service
 * Hellenic Space Agency
 * Hellenic Trench
 * Hellenistic astrology
 * Hellespontus Montes
 * Hellhole (film)
 * Helliconia
 * Hellion (video game)
 * Hellmuth Walter
 * Hello (company)
 * Hello! How Are You?
 * Hello, Harvest Moon
 * Hellpoint
 * Hells Angels on Wheels
 * Helmert (crater)
 * Helmet streamer
 * Helmet-mounted display
 * Helmholtz (Martian crater)
 * Helmholtz (lunar crater)
 * Helmholtz flow
 * Helmi stream
 * Helmut Abt
 * Helmut Bischoff
 * Helmut Gröttrup
 * Helmut H. Schaefer
 * Helmut Hölzer
 * Helmut Ullrich Astronomical Observatory
 * Helmut W. Schulz
 * Helmut Wimmer
 * Helsinki University Observatory
 * Hemera
 * Hemiboreal
 * Hemingway (crater)
 * Hemipelagic sediment
 * Hemispheres of Earth
 * Hemispherical electron energy analyzer
 * Hemispherical photography
 * Hemispherical resonator gyroscope
 * Hemolithin
 * Hen 2-10
 * Hen 2-428
 * Hen 2-437
 * Hen 2-47
 * Henbury Meteorites Conservation Reserve
 * Hendecagram
 * Henderson (crater)
 * Hendrik C. van de Hulst
 * Hendrik Lorentz
 * Hendrik van Gent
 * Hendrix (crater)
 * Heng-O Corona
 * Henize 206
 * Henny van der Windt
 * Henree
 * Henri Arnaut de Zwolle
 * Henri Debehogne
 * Henri Joseph Anastase Perrotin
 * Henri M.J. Boffin
 * Henri Poincaré
 * Henri-Alexandre Deslandres
 * Henrietta Swan Leavitt
 * Henrik Johan Walbeck
 * Henrik Mohn
 * Henrik Svensmark
 * Henrique Alvim Corréa
 * Henry "Trae" Winter
 * Henry (Apollo lunar crater)
 * Henry (Martian crater)
 * Henry (lunar crater)
 * Henry Bate of Mechelen
 * Henry Brinton
 * Henry C. King
 * Henry Chamberlain Russell
 * Henry Charles Gordon
 * Henry Crew
 * Henry Crown Space Center
 * Henry Crozier Keating Plummer
 * Henry Draper
 * Henry Draper Catalogue
 * Henry Draper Medal
 * Henry E. Holt
 * Henry Earl Singleton
 * Henry Fitz
 * Henry Fox Talbot
 * Henry Frith
 * Henry Frères (crater)
 * Henry Gale (astrophysicist)
 * Henry Gee
 * Henry Hamilton (priest)
 * Henry Hartsfield
 * Henry Hasse
 * Henry Hoyle Howorth
 * Henry Jasper Redfern
 * Henry Kandrup
 * Henry L. Giclas
 * Henry Lawson (astronomer)
 * Henry Lin (astronomer)
 * Henry Lincoln
 * Henry Lomb
 * Henry Norris Russell
 * Henry Norris Russell Lectureship
 * Henry P. H. Bromwell
 * Henry Paul Hansen
 * Henry Poston
 * Henry Slesar
 * Henry Smith Pritchett
 * Henry Stommel Research Award
 * Henry Stuart Jones
 * Henry Throop
 * Henry Tye
 * Henry Ussher (astronomer)
 * Henry Vernon Wong
 * Henry: Portrait of a Serial Killer
 * Henyey (crater)
 * Henyey track
 * Hepatocystis bainae
 * Hepatocystis brosseti
 * Hepatocystis carpenteri
 * Hepatocystis epomophori
 * Hepatocystis hipposideri
 * Hepatocystis perronae
 * Hepatocystis pteropti
 * Hepatotoxicity
 * Hephaestus Fossae
 * Heptabarb
 * Heptagram
 * Heptobarbital
 * Hepzibah (comics)
 * Her Desher Vallis
 * Her Majesty's Spiffing
 * Her Private Hell
 * Heraclitus
 * Heraclitus (crater)
 * Herapathite
 * Herbert Alonzo Howe
 * Herbert Armitage James
 * Herbert Dingle
 * Herbert E. Grier
 * Herbert Grotrian
 * Herbert Gursky
 * Herbert Hall Turner
 * Herbert L. Strauss
 * Herbert Raab
 * Herbert T. Ueda
 * Herbicide
 * Herbig Ae/Be star
 * Herbig–Haro object
 * Hercules (constellation)
 * Hercules (crater)
 * Hercules (dwarf galaxy)
 * Hercules A
 * Hercules Against the Moon Men
 * Hercules Cluster
 * Hercules Superclusters
 * Hercules X-1
 * Hercules in Chinese astronomy
 * Hercules stream
 * Hercules–Corona Borealis Great Wall
 * Here Comes Treble
 * Here Comes the Moon
 * Here be dragons
 * Heredity (short story)
 * Hereford Arizona Observatory
 * Heremba Bailung
 * Heretics of Dune
 * Herigonius (crater)
 * Heritage Trilogy
 * Herley Industries
 * Herman Potočnik
 * Herman Schultz (astronomer)
 * Herman Zanstra
 * Herman of Carinthia
 * Hermann (crater)
 * Hermann Bondi
 * Hermann Brück
 * Hermann Carl Vogel
 * Hermann Ganswindt
 * Hermann Goldschmidt
 * Hermann Hunger
 * Hermann Joseph Klein
 * Hermann Kobold
 * Hermann Minkowski
 * Hermann Mucke (astronomer)
 * Hermann Oberth
 * Hermann Rothe
 * Hermann Weyl
 * Hermann of Reichenau
 * Hermann von Struve
 * Hermann-Oberth-Gesellschaft
 * Hermes
 * Hermes (satellite)
 * Hermes (spacecraft)
 * Hermes Road Measurement System
 * Herminiimonas glaciei
 * Hermippe (moon)
 * Hermite (crater)
 * Herne Tavern
 * Hernán Cattáneo
 * Hero (1983 film)
 * Hero Rupes
 * Herodotus (crater)
 * Heroes Chronicles
 * Heroes of Might and Magic
 * Heroes of Might and Magic (Game Boy Color)
 * Heroes of Might and Magic II
 * Heroes of Might and Magic III
 * Heroes of Might and Magic III: Armageddon's Blade
 * Heroes of Might and Magic III: The Shadow of Death
 * Heroes of Might and Magic IV
 * Heroes of Might and Magic IV (card game)
 * Heroes of Might and Magic Online
 * Heroes of Might and Magic V
 * Heroes of Might and Magic V: Hammers of Fate
 * Heroes of Might and Magic V: Tribes of the East
 * Heroes of Might and Magic: A Strategic Quest
 * Heroes of Might and Magic: Quest for the Dragon Bone Staff
 * Heron (crater)
 * Herrett Center for Arts and Science
 * Herrett Observatory
 * Herschel (Martian crater)
 * Herschel (Mimantean crater)
 * Herschel (crater)
 * Herschel (lunar crater)
 * Herschel 400 Catalogue
 * Herschel Medal
 * Herschel Museum of Astronomy
 * Herschel Space Observatory
 * Herschel wedge
 * Herse (moon)
 * Herta Regina Leng
 * Hertha Wambacher
 * Hertz (crater)
 * Hertzsprung (crater)
 * Hertzsprung gap
 * Hertzsprung–Russell diagram
 * Hervé Faye
 * Hervé Stevenin
 * Herwart von Hohenburg
 * Herzberg Institute of Astrophysics
 * Hesiod (crater)
 * Hesiodus (crater)
 * Hesperus
 * Hess (crater)
 * Hess diagram
 * Hess-Apollo (crater)
 * Hestia (novel)
 * Heterogeneous Aerial Reconnaissance Team
 * Heteronuclear single quantum coherence spectroscopy
 * Heterosphere
 * Heterotic string theory
 * Hevelius (crater)
 * Hevesy (crater)
 * Heweliusz (satellite)
 * Hex Hector
 * Hexaarylbiimidazole
 * Hexafluoroisobutylene
 * Hexagram
 * Hexapod-Telescope
 * Hexazinone
 * Hexethal
 * Hexobarbital
 * Hey You (Pink Floyd song)
 * Hey! Pikmin
 * Hey's Mineral Index
 * Heymans (crater)
 * Heyrovsky (crater)
 * Hi-Ten Bomberman
 * HiRISE
 * HiROS
 * HiWish program
 * Hibari (satellite)
 * Hibernation
 * Hibernation (spaceflight)
 * Hibes Montes
 * Hibonite
 * Hicetas
 * Hickman crater
 * Hickson 44
 * Hickson Compact Group
 * Hidden Figures
 * Hidden Universe 3D
 * Hidden Valley Observatory
 * Hide-and-Seek (short story)
 * Hideo Itokawa
 * Hideo Kojima
 * Hideo Shima
 * Hiding in the Light
 * Hierarchy problem
 * Hierarchy theory
 * Hieronymus Schreiber
 * Higgs Discovery
 * Higgsino
 * High Above
 * High Accuracy Radial Velocity Planet Searcher
 * High Adventure Cliffhangers Buck Rogers Adventure Game
 * High Altitude Observatory
 * High Altitude Venus Operational Concept
 * High Altitude Water Cherenkov Experiment
 * High Ambition Coalition
 * High Definition Earth Viewing cameras
 * High Earth orbit
 * High Elevation Antarctic Terahertz Telescope
 * High Endoatmospheric Defense Interceptor
 * High Energy Astronomy Observatory 1
 * High Energy Astronomy Observatory 3
 * High Energy Stereoscopic System
 * High Energy Transient Explorer
 * High Flux Isotope Reactor
 * High Hopes (Pink Floyd song)
 * High Priest of Amun
 * High Resolution Coronal Imager
 * High Resolution Fly's Eye Cosmic Ray Detector
 * High Resolution Microwave Survey
 * High Resolution Stereo Camera
 * High Resolution Wide Swath SAR imaging
 * High Speed Photometer
 * High Test Girls
 * High Vacuum
 * High Virgo
 * High capacity oceanographic lithium battery pack
 * High energy density physics
 * High marsh
 * High production volume chemicals
 * High resistance connection
 * High resolution electron energy loss spectroscopy
 * High time-resolution astrophysics
 * High voltage
 * High water mark
 * High-Energy Replicated Optics
 * High-Enthalpy Arc Heated Facility
 * High-G training
 * High-Z Supernova Search Team
 * High-altitude balloon
 * High-altitude nuclear explosion
 * High-confinement mode
 * High-energy astronomy
 * High-frequency Active Auroral Research Program
 * High-intensity discharge lamp
 * High-nutrient, low-chlorophyll regions
 * High-power impulse magnetron sputtering
 * High-resolution dynamics limb sounder
 * High-resolution picture transmission
 * High-throughput satellite
 * High-velocity cloud
 * Higher and Higher (The Moody Blues song)
 * Higher-dimensional Einstein gravity
 * Higher-dimensional supergravity
 * Higher-spin theory
 * Highland
 * Highland Road Park Observatory
 * Highland carrier
 * Highlander II: The Quickening
 * Highlander: The Animated Series
 * Highly charged ion
 * Highly elliptical orbit
 * Hikaru Sulu
 * Hilary Bailey
 * Hilary Evans
 * Hilbert (crater)
 * Hilbert spectroscopy
 * Hilda asteroid
 * Hildegard (crater)
 * Hildegarde
 * Hilkka Rantaseppä-Helenius
 * Hill (crater)
 * Hill 305 (lunar mountain)
 * Hill chain
 * Hill sphere
 * Hillary Montes
 * Hillock
 * Hills cloud
 * Hills mechanism
 * Hillslope evolution
 * Hilmar Duerbeck
 * Hilo (soil)
 * Hilt's law
 * Himalayan Geothermal Belt
 * Himalayan owl
 * Himalayas
 * Himalia (moon)
 * Himalia group
 * Himawari (satellite)
 * Himawari 8
 * Himawari 9
 * Himiko (Lyman-alpha blob)
 * Hina (goddess)
 * Hind (crater)
 * Hind Al-Abadleh
 * Hindu Kush
 * Hindu astrology
 * Hindu calendar
 * Hindu units of time
 * Hine-nui-te-pō
 * Hines Ward
 * Hinode (satellite)
 * Hinoe uma
 * Hinotori (satellite)
 * Hinshelwood (crater)
 * Hippalus (crater)
 * Hipparchic cycle
 * Hipparchus (Martian crater)
 * Hipparchus (lunar crater)
 * Hipparcos
 * Hippasus
 * Hippie Sabotage
 * Hippie exploitation films
 * Hippocamp (moon)
 * Hippocrates (lunar crater)
 * Hiram Perkins
 * Hiranya Peiris
 * Hiranyagarbha
 * Hirayama (crater)
 * Hirayama family
 * Hirokazu Tanaka
 * Hiroki Kosai
 * Hiroshi Abe (astronomer)
 * Hiroshi Araki
 * Hiroshi Kaneda
 * Hiroshi Matsumoto (engineer)
 * Hiroshi Mori (astronomer)
 * Hiroshige (crater)
 * Hiroshima Children's Museum
 * Hisaki (satellite)
 * Hispasat
 * Hispasat 1C
 * Hispasat 30W-6
 * Hispasat AG1
 * Histoire Céleste Française
 * Histoire Naturelle
 * Historia Naturalis Brasiliae
 * Historia naturalis bulgarica
 * Historical astronomy
 * Historical brightest stars
 * Historical comet observations in China
 * Historical models of the Solar System
 * Historically significant lunar eclipses
 * Historicist interpretations of the Book of Daniel
 * History (The Verve song)
 * History (short story)
 * History Lesson
 * History of Cartography Project
 * History of Earth
 * History of Geo- and Space Sciences
 * History of Hindu Mathematics
 * History of Mars observation
 * History of Solar System formation and evolution hypotheses
 * History of SpaceX
 * History of X-ray astronomy
 * History of astrology
 * History of astronomy
 * History of cartography
 * History of classical mechanics
 * History of climate change science
 * History of flooding in Canada
 * History of gamma-ray burst research
 * History of general relativity
 * History of geology
 * History of geomagnetism
 * History of geophysics
 * History of gravitational theory
 * History of ice drilling
 * History of invertebrate paleozoology
 * History of life
 * History of longitude
 * History of mineralogy
 * History of numerical weather prediction
 * History of paleontology
 * History of paleontology in the United States
 * History of soil science
 * History of spaceflight
 * History of speciation
 * History of spectroscopy
 * History of street lighting in the United States
 * History of string theory
 * History of sundials
 * History of supernova observation
 * History of the Big Bang theory
 * History of the Deep Space Network
 * History of the center of the Universe
 * History of the forest in Central Europe
 * History of the telescope
 * History of timekeeping devices in Egypt
 * Histosol
 * Hit Man (1972 film)
 * Hitchhiker 1
 * Hitchhiker 2
 * Hitchhiker Program
 * Hitchin functional
 * Hiten
 * Hither Green railway station
 * Hitler – Beast of Berlin
 * Hitomaro (crater)
 * Hitomi (satellite)
 * Hiveswap
 * Hiʻiaka (moon)
 * Hjulström curve
 * Hjúki and Bil
 * Hoag's Object
 * Hob Gadling
 * Hoba meteorite
 * Hobbs Observatory
 * Hobbs meter
 * Hobby–Eberly Telescope
 * Hobo with a Shotgun
 * Hocus Pocus (1993 film)
 * Hod (Kabbalah)
 * Hodge 301
 * Hodgkins (crater)
 * Hodoyoshi 1
 * Hodoyoshi 3
 * Hodoyoshi 4
 * Hoffmeister (crater)
 * Hogback (geology)
 * Hogfather
 * Hogg (crater)
 * Hogland Series
 * Hoher List Observatory
 * Hohmann (crater)
 * Hohmann transfer orbit
 * Hokkaido Space Science and Technology Creation Center
 * Hokuriku (train)
 * Hokusai (crater)
 * Hokusai quadrangle
 * Hokutosei
 * Holarctic realm
 * Holbein (crater)
 * Holberg (crater)
 * Holden (Martian crater)
 * Holden (lunar crater)
 * Holding On for Life
 * Holdrege (soil)
 * Hole argument
 * Holetschek (crater)
 * Holeum
 * Holger Pedersen (astronomer)
 * Holger Thiele
 * Holleford crater
 * Hollow Earth
 * Hollow Moon
 * Hollow cathode effect
 * Hollow-cathode lamp
 * Hollows (Mercury)
 * Holly Bush Inn, Makeney
 * Holly Bush, Bollington
 * Holly Ridings
 * Hollywood Arms, Chelsea
 * Hollywood Boulevard (1976 film)
 * Hollywood Chainsaw Hookers
 * Holmberg 15A
 * Holmberg II
 * Holmberg IX
 * Holmdel Horn Antenna
 * Holmes (crater)
 * Holmesville Soil Series
 * Holocaust (sacrifice)
 * Holocene calendar
 * Holocene glacial retreat
 * Hologon
 * Holographic grating
 * Holographic interferometry
 * Holographic principle
 * Holoship
 * Holst (crater)
 * Holst action
 * Holy Fire
 * Holy Spirit Grotto
 * Holy water
 * Homayoun Seraji
 * Hombre Lobo
 * Home (2015 film)
 * Home (nightclub chain)
 * Home Army and V-1 and V-2
 * Home Movies (TV series)
 * Home Plate (Mars)
 * Home cinema
 * Home on Lagrange (The L5 Song)
 * Homefront (Star Trek: Deep Space Nine)
 * Homer (crater)
 * Homer E. Newell Jr.
 * Homer Hickam
 * Homeric Minimum
 * Homestake experiment
 * Homestead (meteorite)
 * Hometown Unicorn
 * Homeward Bound (Turtledove novel)
 * Homeworld
 * Homeworld 2
 * Homeworld: Cataclysm
 * Homeworld: Deserts of Kharak
 * Homicidal sleepwalking
 * Hommel (crater)
 * Homo Sol
 * Homoclinal ridge
 * Homocline
 * Homological mirror symmetry
 * Homosphere
 * Homothetic vector field
 * Homunculus Nebula
 * Honcheonsigye
 * Honey, I Shrunk the Audience!
 * Honeycomb Nebula
 * Honeycomb mirror
 * Honeywell Primus
 * Hong Kong Space Museum
 * Hong Kum Lee
 * Hong-Yee Chiu
 * Hongjun Laozu
 * Hong–Ou–Mandel effect
 * Honi HaMe'agel
 * Honor Among Enemies
 * Honor in Vengeance II
 * Honores Friderici
 * Honoré Flaugergues
 * Hoober Observatory
 * Hood 2 Hood: The Blockumentary
 * Hooke (Martian crater)
 * Hooke (lunar crater)
 * Hooker Glacier (New Zealand)
 * Hooker Lake
 * Hooker River
 * Hooker Valley Track
 * Hoop Conjecture
 * Hoop and Grapes, Aldgate High Street
 * Hoop and Grapes, Farringdon Street
 * Hoops & Yoyo Ruin Christmas
 * Hoot (film)
 * Hop-tu-Naa
 * Hope Bay
 * Hope Black
 * Hope and Anchor, Welham Green
 * Hopi Buttes volcanic field
 * Hopi mythology
 * Hopi-Dart
 * Hopkins Observatory
 * Hopkins Ultraviolet Telescope
 * Hopmann (crater)
 * Hopper (crater)
 * Hopper (spacecraft)
 * Hora (astrology)
 * Hora Ratna
 * Hora Sara
 * Horace (crater)
 * Horace Parnell Tuttle
 * Horace Price
 * Horace W. Babcock
 * Horary astrology
 * Horatio (crater)
 * Hordak
 * Horizon
 * Horizon (general relativity)
 * Horizon problem
 * Horizons Satellite
 * Horizons-1
 * Horizons-2
 * Horizons-3e
 * Horizons: Exploring the Universe
 * Horizontal Environmental Genetic Alteration Agents
 * Horizontal Falls
 * Horizontal branch
 * Horizontal coordinate system
 * Horizontal position representation
 * Horizontal situation indicator
 * Hormesis
 * Horn (Chinese constellation)
 * Horndeski's theory
 * Horned God
 * Hornsby (crater)
 * Horologium (constellation)
 * Horologium in Chinese astronomy
 * Horologium-Reticulum Supercluster
 * Horoscope
 * Horoscopic astrology
 * Horowitz (crater)
 * Horrebow (crater)
 * Horrocks (crater)
 * Horror Fiction in Seven Spooky Steps
 * Horror Movie (song)
 * Horror host
 * Horrors of Spider Island
 * Horse (zodiac)
 * Horse Girl
 * Horse latitudes
 * Horse pond
 * Horsehead Nebula
 * Horseshoe orbit
 * Horst (geology)
 * Hortensius (crater)
 * Horton overland flow
 * Hosanna-Tabor Evangelical Lutheran Church & School v. Equal Employment Opportunity Commission
 * Hospital bed
 * Hosted payload
 * Hot Bird 13B
 * Hot Bird 13C
 * Hot Bird 7
 * Hot Docs Ted Rogers Cinema
 * Hot Jupiter
 * Hot Neptune
 * Hot Package
 * Hot Since 82
 * Hot Streets (TV series)
 * Hot Summer in the City
 * Hot Wheels: AcceleRacers
 * Hot band
 * Hot cathode
 * Hot dark matter
 * Hot dry rock geothermal energy
 * Hot spring
 * Hot, dust-obscured galaxy
 * Hotel Angel
 * Hotel Deauville (Havana)
 * Hotel Habana Riviera
 * Hotel Sevilla
 * Hotel Transylvania: The Series
 * Hotel Tryp Habana Libre
 * Hotel rating
 * Hoth
 * Hotspot (geology)
 * Hotspot Ecosystem Research and Man's Impact On European Seas
 * Hotspot Ecosystems Research on the Margins of European Seas
 * Hottah (Mars)
 * Houdek (soil)
 * Hour angle
 * Hour circle
 * House (astrology)
 * House of Aviance
 * House of Shock (TV series)
 * House of Suns
 * House of Xtravaganza
 * House of Yes (Brooklyn)
 * Houssay (crater)
 * Houston Museum of Natural Science
 * Houston black (soil)
 * Houston, We Have a Problem! (film)
 * Houston, We've Got a Problem
 * Houston, we have a problem
 * Houtermans (crater)
 * Houtermans Award
 * Houzeau (crater)
 * Hovnatanian (crater)
 * How Did a Nice Girl Like You Get Into This Business?
 * How Doth the Little Crocodile
 * How I Killed Pluto and Why It Had It Coming
 * How It Began
 * How Sharper Than a Serpent's Tooth
 * How We Went to Mars
 * How the Earth Was Made
 * How the Universe Works
 * How to Make a Spaceship
 * How to Stuff a Wild Bikini
 * Howard Alan Smith
 * Howard Browne
 * Howard DeVore
 * Howard Grubb
 * Howard Harker
 * Howard J. Brewington
 * Howard Menger
 * Howard P. Robertson
 * Howard Stern television shows
 * Howard Thomas Orville
 * Howard Wolowitz
 * Howard the Duck (film)
 * Howard's Rock
 * Howardite
 * Howell Observatory
 * Howl-O-Scream
 * Howl-O-Scream (disambiguation)
 * Howler monkey gods
 * Hoyle–Narlikar theory of gravity
 * Hořava–Lifshitz gravity
 * Hořava–Witten domain wall
 * Hrad Vallis
 * Hradec Králové Observatory
 * Hraschina meteorite
 * Hrvoje Petek
 * Hsu diffusion
 * Hu (mythology)
 * Hu Peiquan
 * Huairou Solar Observing Station
 * Huanjing (satellite)
 * Huayco
 * Hubbard Medal
 * Hubble (crater)
 * Hubble (film)
 * Hubble Deep Field
 * Hubble Deep Field South
 * Hubble European Space Agency Information Centre
 * Hubble Guide Star Catalog – Astrographic Catalog/Tycho
 * Hubble Heritage Project
 * Hubble Legacy Field
 * Hubble Origins Probe
 * Hubble Space Telescope
 * Hubble Ultra-Deep Field
 * Hubble bubble (astronomy)
 * Hubble search for transition comets
 * Hubble sequence
 * Hubble volume
 * Hubble's law
 * Hubble: 15 Years of Discovery
 * Hubble–Reynolds law
 * Hubelmatt Observatory
 * Hubert Anson Newton
 * Hubert Reeves
 * Hubertus Strughold
 * Hubie Halloween
 * Huchra's lens
 * Huckitta (meteorite)
 * Hudson (Aliens)
 * Hudson River Museum
 * Hudson Seaway
 * Huemul Project
 * Huerta
 * Huge-LQG
 * Huggins (Martian crater)
 * Huggins (lunar crater)
 * Hugh Couchman
 * Hugh Downs
 * Hugh Ernest Butler
 * Hugh Hefner
 * Hugh Percy Wilkins
 * Hugh Ross (astrophysicist)
 * Hughes Aircraft Company
 * Hughes Network Systems
 * Hughes–Drever experiment
 * Huglin index
 * Hugo (crater)
 * Hugo Eckener
 * Hugo Gernsback
 * Hugo Gyldén
 * Hugo de Garis
 * Hugo von Seeliger
 * Huib Bakker
 * Huihui Lifa
 * Huitaca (goddess)
 * Hulbert Harrington Warner
 * Hulk: Where Monsters Dwell
 * Hull Zero Three
 * Hulse–Taylor binary
 * Human Is
 * Human Lunar Return study
 * Human Microbiome Project
 * Human Research Facility Holter Monitor
 * Human Research Program
 * Human Space Flight Centre
 * Human Systems Integration Division
 * Human Torch
 * Human analog missions
 * Human geography
 * Human impact on the nitrogen cycle
 * Human microbiome
 * Human mission to Mars
 * Human outpost
 * Human presence in space
 * Human rights and climate change
 * Human spaceflight
 * Human uses of bats
 * Human-rating certification
 * Humanity Star
 * Humanoids from the Deep
 * Humason (crater)
 * Humboldt (crater)
 * Humboldt meridian
 * Humboldtian science
 * Hume (crater)
 * Hume (soil)
 * Hume Cronyn Memorial Observatory
 * Hume's hawk-owl
 * Humic substance
 * Humidity
 * Humidity Sounder for Brazil
 * Humin
 * Hummeln structure
 * Humming Bird (train)
 * Hummock
 * Humpty Doo Hotel
 * Humus
 * Hun Kal (crater)
 * Hun-Came Macula
 * Hund's cases
 * Hund's rules
 * Hundred (novel series)
 * Hundun
 * Hungaria asteroid
 * Hungarian Astronautical Society
 * Hungarian Space Office
 * Hungarian names in space
 * Hungary
 * Hunic superterrane
 * Hunt for Exomoons with Kepler
 * Hunter Prey
 * Hunters (2020 TV series)
 * Hunters of Dune
 * Huntsville meridian
 * Hunveyor
 * Huo Hsing Vallis
 * Huronian glaciation
 * Hurricane (comics)
 * Hurricane Dorian–Alabama controversy
 * Hurricane Research Division
 * Hurry On Sundown
 * Husar-rover
 * Husayn Kashifi
 * Husband Hill
 * HuskySat-1
 * Hussey (crater)
 * Hutt (Star Wars)
 * Hutton (Martian crater)
 * Hutton (lunar crater)
 * Huxley (Martian crater)
 * Huxley (lunar crater)
 * Huygens (crater)
 * Huygens (spacecraft)
 * Huygens–Fresnel principle
 * Huītzilōpōchtli
 * Hvar Observatory
 * Hvare-khshaeta
 * Hwangto
 * Hwanung
 * Hwasong-13
 * Hwasong-14
 * Hwasong-15
 * Hwasong-16
 * Hy-V
 * HySIS
 * Hyacinthe de Bougainville
 * Hyades (mythology)
 * Hyades (star cluster)
 * Hyades Stream
 * Hyaloclastite
 * Hyalopilitic
 * Hybrid input output (HIO) algorithm for phase retrieval
 * Hyde Memorial Observatory
 * Hyde Park Picture House
 * Hyder flare
 * Hydra (constellation)
 * Hydra (moon)
 * Hydra Cluster
 * Hydra in Chinese astronomy
 * Hydra-Centaurus Supercluster
 * Hydraotes Chaos
 * Hydrargyrum medium-arc iodide lamp
 * Hydrargyrum quartz iodide
 * Hydraulic action
 * Hydraulic conductivity
 * Hydraulic diameter
 * Hydraulic head
 * Hydraulic redistribution
 * Hydraulic tomography
 * Hydric soil
 * Hydrion paper
 * HydroGeoSphere
 * Hydroacoustics
 * Hydrocarbon indicator
 * Hydrocarbon poisoning
 * Hydrodynamic escape
 * Hydrofluoric acid burn
 * Hydrogen
 * Hydrogen Epoch of Reionization Array
 * Hydrogen Intensity and Real-time Analysis eXperiment
 * Hydrogen anion
 * Hydrogen line
 * Hydrogen spectral series
 * Hydrogen-deficient star
 * Hydrogenobacter
 * Hydrogenotroph
 * Hydrogen–deuterium exchange
 * Hydrogeology Journal
 * Hydrogeomorphology
 * Hydrogeophysics
 * Hydrograph
 * Hydrographer of the Navy
 * Hydrographic survey
 * Hydrography
 * Hydrography of Norte de Santander
 * Hydrography of the San Francisco Bay Area
 * Hydroinformatics
 * Hydrologic Research Center (US)
 * Hydrological Ensemble Prediction Experiment
 * Hydrological code
 * Hydrological optimization
 * Hydrological transport model
 * Hydrology
 * Hydrology (agriculture)
 * Hydrology in Practice
 * Hydrology of Fishing Creek (North Branch Susquehanna River tributary)
 * Hydrology of Switzerland
 * Hydrology of the Catawissa Tunnel
 * Hydrometeorology
 * Hydrometry
 * Hydropedology
 * Hydrophobic soil
 * Hydroseeding
 * Hydrosphere
 * Hydrostatic equilibrium
 * Hydrostatic head
 * Hydrothermal circulation
 * Hydrothermal explosion
 * Hydroxyl radical
 * Hydrus
 * Hydrus (software)
 * Hydrus in Chinese astronomy
 * Hyeronymus Sirturus
 * Hyetograph
 * Hygiea family
 * Hygieostatic Bat Roost
 * Hyginus (crater)
 * Hyleg
 * Hylocereus
 * Hylocereus costaricensis
 * Hylocereus megalanthus
 * Hylocereus setaceus
 * Hylogenesis
 * Hymenobacter koreensis
 * Hymenobacter psychrophilus
 * Hymenobacter saemangeumensis
 * Hymn to Enlil
 * Hypanis Valles
 * Hypatia
 * Hypatia (crater)
 * Hypatia (stone)
 * Hyper Force
 * Hyper Music/Feeling Good
 * Hyper-Kamiokande
 * Hyperbolic asteroid
 * Hyperbolic motion (relativity)
 * Hyperbolic trajectory
 * Hyperboreae Undae
 * Hypercane
 * Hyperchromicity
 * Hypercolor
 * Hypercompact stellar system
 * Hyperconcentrated flow
 * Hypercone (spacecraft)
 * Hyperdrive (British TV series)
 * Hypergiant
 * Hypergol Maintenance Facility
 * Hypergravity
 * Hyperion (Simmons novel)
 * Hyperion (Titan)
 * Hyperion (moon)
 * Hyperion proto-supercluster
 * Hypernauts
 * Hypernova
 * Hypersaline lake
 * Hypersomnia
 * Hypersonic Flight Experiment
 * Hypersonic speed
 * Hyperspace
 * Hyperspace (film)
 * Hyperspectral imaging
 * Hyperspeed (video game)
 * Hyperthermophile
 * Hyperthermus
 * Hypervelocity
 * Hypervelocity Asteroid Intercept Vehicle
 * Hyphomonas
 * Hypnagogia
 * Hypnic jerk
 * Hypnogram
 * Hypnopompic
 * Hypnos
 * Hypnotic
 * Hypogene
 * Hypogeum
 * Hypogée des Dunes
 * Hypolith
 * Hypopnea
 * Hyporheic zone
 * Hypotheses non fingo
 * Hypothetical astronomical object
 * Hypothetical moon of Mercury
 * Hypothetical star
 * Hypothetical types of biochemistry
 * Hypoxia (environmental)
 * Hypoxia in fish
 * Hypsibiidae
 * Hypsibius
 * Hypsochromic shift
 * Hypsomata
 * Hypsometric tints
 * Hypsometry
 * Hyron Spinrad
 * Hyrrokkin (moon)
 * Hysteria (Muse song)
 * Hár (crater)
 * Härjapea
 * Hästens
 * Hédervári (crater)
 * Hélios 1B
 * Hélène Courtois
 * Hénon–Heiles system
 * Hérodote
 * Héroux-Devtek
 * Hügelkultur
 * Hügelland
 * H₂éwsōs
 * I Accuse My Parents
 * I Adore Mi Amor
 * I Aim at the Stars
 * I Am a Camera
 * I Am the Doorway
 * I Aquarii
 * I Bought a Vampire Motorcycle
 * I Can Dream About You
 * I Can Hardly Wait
 * I Can't Live a Dream
 * I Can't Sleep (song)
 * I Carinae
 * I Come in Peace
 * I Dismember Mama
 * I Downloaded a Ghost
 * I Dream of Jeannie
 * I Dreamed a Dream
 * I Drink Your Blood
 * I Eat Your Skin
 * I Had the Craziest Dream
 * I Have Dreamed (song)
 * I Have a Dream (song)
 * I Hear a New World
 * I Just Wasn't Made for These Times (Defiance)
 * I Like Dreamin'
 * I Like Pumpkins
 * I Lost My Heart to a Starship Trooper
 * I Love Bees
 * I Love to Singa
 * I Put a Spell on You
 * I See You (Theme from Avatar)
 * I Sell the Dead
 * I Shall Wear Midnight
 * I Shot an Arrow into the Air
 * I Spit on Your Grave (2010 film)
 * I Spit on Your Grave 2
 * I Spit on Your Grave: Deja Vu
 * I Velorum
 * I Was a Satellite of the Sun
 * I Was a Teenage Werewolf
 * I Will Fear No Evil
 * I Zw 36
 * I Zwicky 18
 * I tabù n. 2
 * I'll See You in My Dreams (1924 song)
 * I'm Gonna Git You Sucka
 * I'm Only Sleeping
 * I'm So Tired
 * I'm a King Bee
 * I'm in Marsport Without Hilda
 * I, Jedi
 * I-1K
 * I-2K
 * I-3K
 * I-4 satellite
 * I-4K
 * I-6K
 * I-Space (Chinese company)
 * I-Tree
 * I-War (1997 video game)
 * I. F. Clarke
 * I. J. Good
 * IACT
 * IAMG Distinguished Lectureship
 * IAR 111
 * IAU (1976) System of Astronomical Constants
 * IAU Circular
 * IAU Working Group on Star Names
 * IAU definition of planet
 * IAU designated constellations
 * IAU designated constellations by area
 * IBM 1009
 * IBM Blue Gene
 * IBM Information Management System
 * IBM RAD6000
 * IBM System/4 Pi
 * IC 10
 * IC 1011
 * IC 1101
 * IC 1295
 * IC 1337
 * IC 1459
 * IC 1517
 * IC 1590
 * IC 1613
 * IC 167
 * IC 1838
 * IC 1953
 * IC 1993
 * IC 2006
 * IC 2118
 * IC 2149
 * IC 2177
 * IC 2220
 * IC 2233
 * IC 2391
 * IC 2395
 * IC 2448
 * IC 2488
 * IC 2497
 * IC 2560
 * IC 2574
 * IC 2602
 * IC 2714
 * IC 289
 * IC 2944
 * IC 2955
 * IC 3
 * IC 335
 * IC 3418
 * IC 342
 * IC 342/Maffei Group
 * IC 348
 * IC 349
 * IC 3583
 * IC 405
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 * IC 434
 * IC 4406
 * IC 443
 * IC 444
 * IC 447
 * IC 4499
 * IC 4592
 * IC 4651
 * IC 4662
 * IC 4665
 * IC 4703
 * IC 4710
 * IC 4756
 * IC 4970
 * IC 5052
 * IC 5146
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 * IC 5152
 * IC 5201
 * IC 5332
 * IC 755
 * IC 883
 * ICAN-II
 * ICARUS experiment
 * ICBM address
 * ICER
 * ICES Journal of Marine Science
 * ICESat
 * ICESat-2
 * ICEYE
 * ICRANet
 * ICstat
 * ICube-1
 * IDC (musician)
 * IDL (programming language)
 * IEA Solar Heating and Cooling Programme
 * IEEE Geoscience and Remote Sensing Society
 * IEEE Nuclear and Plasma Sciences Society
 * IERS Reference Meridian
 * IFAE
 * IGO (software)
 * IGR J11014−6103
 * IGR J17091-3624
 * IGR J17329-2731
 * IHI Corporation
 * II Lupi
 * II Pegasi
 * II Zwicky 28
 * II Zwicky 73
 * IIE iron meteorite
 * IK Pegasi
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 * ILC Dover
 * ILR-33 AMBER
 * ILWIS
 * IM Normae
 * IM Pegasi
 * IMAGE (spacecraft)
 * IMAGINE Photogrammetry
 * IMBER
 * IMS-1
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 * INGEMMET
 * INSAT-1A
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 * INSAT-1C
 * INSAT-1D
 * INSAT-2DT
 * INSAT-2E
 * INSAT-3A
 * INSAT-3B
 * INSAT-3C
 * INSAT-3D
 * INSAT-3DR
 * INSAT-3E
 * INSAT-4A
 * INSAT-4B
 * INSAT-4C
 * INSAT-4CR
 * INSAT-4E
 * INTA-100
 * INTA-255
 * INTA-300
 * INTEGRAL
 * INVADER
 * INavsat consortium
 * IOK-1
 * ION (satellite)
 * ION CubeSat Carrier
 * IPTF14atg
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 * IPv4 address exhaustion
 * IQ Aurigae
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 * IRAF
 * IRAM 30m telescope
 * IRAP PhD Program
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 * IRAS
 * IRAS 04509-6922
 * IRAS 05280-6910
 * IRAS 05437+2502
 * IRAS 08544−4431
 * IRAS 12063-6259
 * IRAS 13224-3809
 * IRAS 16293−2422
 * IRAS 16295-29
 * IRAS 17086-25
 * IRAS 17163−3907
 * IRAS 17423-1755
 * IRAS 18162−2048
 * IRAS 19475+3119
 * IRAS 20324+4057
 * IRAS 23304+6147
 * IRC +10420
 * IRC -10414
 * IRC 0218
 * IRIS (astronomical software)
 * IRNSS-1A
 * IRNSS-1B
 * IRNSS-1C
 * IRNSS-1D
 * IRNSS-1E
 * IRNSS-1F
 * IRNSS-1G
 * IRNSS-1H
 * IRNSS-1I
 * IRS-1A
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 * IRS-1C
 * IRS-1D
 * IRS-1E
 * IRS-P2
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 * IRVINE01
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 * IRsweep
 * ISC Kosmotras
 * ISC3
 * ISEE-1
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 * ISIS (satellite)
 * ISIS Neutron and Muon Source
 * ISO 9846
 * ISOCHRON (spacecraft)
 * ISOHDFS 27
 * ISPRS Journal of Photogrammetry and Remote Sensing
 * ISQUARE
 * ISRO Pad Abort Test
 * ISRO Propulsion Complex
 * ISRO Satellite Integration and Testing Establishment
 * ISRO spinoff technologies
 * ISRO: A Personal History
 * ISS ECLSS
 * ISS National Lab
 * ISS Propulsion Module
 * ISS Space Sky Laser
 * ISS year-long mission
 * ISS-RapidScat
 * ISSpresso
 * ISTTOK
 * ISight GPS
 * ITC Enschede
 * ITF-1
 * ITOS-B
 * ITOS-E
 * ITUpSAT1
 * IU Aurigae
 * IX Carinae
 * IXPE
 * IXS Enterprise
 * IZ Aquarii
 * IZMIRAN
 * Iah
 * Iamblichus
 * Ian Axford
 * Ian Bartholomew (cricketer)
 * Ian Crawford (astrobiologist)
 * Ian Glass
 * Ian Levine
 * Ian Morison
 * Ian Oswald
 * Ian P. Griffin
 * Ian Ridpath
 * Ian Schrager
 * Ian Shelton
 * Ian Whates
 * Iana (goddess)
 * Iani Chaos
 * Ianuarius
 * Iapetus (moon)
 * Iapygia quadrangle
 * Iaso Tholus
 * Iazu (crater)
 * Ib Melchior
 * Iberian cartography, 1400–1600
 * Iberulite
 * Iberus Vallis
 * Ibn Al Hytham Islamic School
 * Ibn Bajja (crater)
 * Ibn Battuta (crater)
 * Ibn Firnas (crater)
 * Ibn Ishaq al-Tunisi
 * Ibn Muʿādh al-Jayyānī
 * Ibn Shuayb
 * Ibn Tufail
 * Ibn Yunus
 * Ibn Yunus (crater)
 * Ibn al-A'lam
 * Ibn al-Adami
 * Ibn al-Banna' al-Marrakushi
 * Ibn al-Haytham
 * Ibn al-Kammad
 * Ibn al-Majdi
 * Ibn al-Saffar
 * Ibn al-Samh
 * Ibn al-Shatir
 * Ibn al‐Ha'im al‐Ishbili
 * Ibn al‐Raqqam
 * Ibn-Rushd (crater)
 * Ibogaine
 * Ibragimov (crater)
 * Ibrahim Hazboun
 * Ibrahim Khawas
 * Ibrahim ibn Said al-Sahli
 * Ibrahim ibn Sinan
 * Ibrāhīm al-Fazārī
 * Ibsen (crater)
 * Icaria Fossae
 * Icarus
 * Icarus (crater)
 * Icarus (journal)
 * Icarus Interstellar
 * Icarus at the Edge of Time
 * Iccus of Taranto
 * Ice
 * Ice (Johnson novel)
 * Ice Age: Collision Course
 * Ice MC (rapper)
 * Ice Planet (film)
 * Ice Sheet Mass Balance Inter-comparison Exercise
 * Ice Stupa
 * Ice age
 * Ice bridge
 * Ice calving
 * Ice cauldron
 * Ice cloud
 * Ice core
 * Ice divide
 * Ice drilling
 * Ice dune
 * Ice giant
 * Ice jam
 * Ice lens
 * Ice planet
 * Ice segregation
 * Ice sheet
 * Ice stream
 * Ice tongue
 * Ice volcano
 * Ice-sheet dynamics
 * Ice-sheet model
 * IceCube (spacecraft)
 * IceCube Neutrino Observatory
 * Icebreaker Life
 * Icehenge
 * Iceland spar
 * Iceway
 * Iceworld
 * Icko Iben
 * Iconoclasts (video game)
 * Ictinus (crater)
 * Icy moon
 * Id Tech 3
 * Id Tech 4
 * Ida Barney
 * Ida Busbridge
 * Ida Facula
 * Idealized greenhouse model
 * Idel'son (crater)
 * Ideler (crater)
 * Identification friend or foe
 * Identification studies of UFOs
 * Identity Within
 * Ides of March
 * Idiopathic hypersomnia
 * Idit Zehavi
 * Idle Days on the Yann
 * Idris Elba
 * If (Pink Floyd song)
 * If I Can Dream
 * If There Were No Benny Cemoli
 * If You Had Wings
 * Igaluk
 * Igla (spacecraft docking system)
 * Ignacio López de Ayala
 * Ignacio María de Álava
 * Ignatius L. Donnelly
 * Ignatz Mühlwenzel
 * Ignaz Venetz
 * Ignazio Danti
 * Igneous differentiation
 * Ignimbrite
 * Ignis Brunensis
 * Ignisphaera
 * Ignite the Dream, A Nighttime Spectacular of Magic and Light
 * Ignition City
 * Ignitron
 * Igor (crater)
 * Igor Dmitriyevich Novikov
 * Igor Volk
 * Igor Volke
 * Ijiraq (moon)
 * Ijon Tichy
 * Ijon Tichy: Space Pilot
 * Ikar (rocket stage)
 * Ike & Tina Turner
 * Ike Bloom
 * Iker Jiménez
 * Ikonos
 * Il dio serpente
 * Il disco volante
 * Il mondo della luna
 * Il mondo della luna (Avondano)
 * Il mondo della luna (Galuppi)
 * Il neige sur Liège
 * Il'in (crater)
 * Ilan Ramon
 * Ilan Ramon Youth Physics Center
 * Ilargi
 * Ilisos
 * Ilium (novel)
 * Ilium/Olympos
 * Illegal Aliens (film)
 * Illinois Public Interest Research Group
 * Illinois Soil Nitrogen Test
 * Illinois lunar sample displays
 * Illness and injuries during spaceflight
 * IllumiNations
 * IllumiNations: Reflections of Earth
 * Illuminae
 * Illusion of Gaia
 * Illustrative model of greenhouse effect on climate change
 * Illustrators of Alice's Adventures in Wonderland
 * Illustris project
 * Illuvium
 * Ilmarë (moon)
 * Ilsa, Harem Keeper of the Oil Sheiks
 * Ilsa, She Wolf of the SS
 * Ilsa, the Tigress of Siberia
 * Ilsa, the Wicked Warden
 * Ilse Cleeves
 * Ilumetsa crater
 * Ilyinets crater
 * Imad Barghouthi
 * Image subtraction
 * Image-forming optical system
 * Image-stabilized binoculars
 * Imagery intelligence
 * Images in a Convent
 * Imagine... A Fantasy in the Sky
 * Imaging spectrometer
 * Imaging spectroscopy
 * Imaginum
 * Imago Mundi
 * Imago Universi
 * Imai (star)
 * Imam Khomeini Spaceport
 * Imatra (cinema)
 * Imbrian
 * Imhotep (crater)
 * Imidogen
 * Imilac
 * Immanuel Bonfils
 * Immanuel Velikovsky
 * Immirzi parameter
 * Immobilization (soil science)
 * Immortality Drive
 * Immunotoxicology
 * Imogolite
 * Impact (miniseries)
 * Impact (novel)
 * Impact Field Studies Group
 * Impact crater
 * Impact crater lake
 * Impact depth
 * Impact event
 * Impact gardening
 * Impact structure
 * Impact survival
 * Impact winter
 * Impactite
 * Imperial (SP train)
 * Imperial Earth
 * Imperial Moon
 * Imperium Galactica
 * Imperium Galactum
 * Impervious surface
 * Implied Spaces
 * Impostor (2001 film)
 * Imprelis
 * Improved Orion
 * Impurity
 * Imre Friedmann
 * Imre Izsák
 * Imum coeli
 * In Dreams (Howard Shore song)
 * In Dreams (Roy Orbison song)
 * In Saturn's Rings
 * In Search of Aliens
 * In a Mirror, Darkly
 * In situ capping of subaqueous waste
 * In situ chemical reduction
 * In situ resource utilization
 * In the Courts of the Crimson Kings
 * In the Days of the Comet
 * In the Flesh?
 * In the Light of the Moon
 * In the Mouth of the Whale
 * In the Ocean of Night
 * In the Pines
 * In the Shadow of the Moon (2007 film)
 * In the Shadow of the Moon (book)
 * In the Walls of Eryx
 * In vitro toxicology
 * In vivo magnetic resonance spectroscopy
 * In-Young Ahn
 * In-space propulsion technologies
 * InSight
 * InXitu
 * Ina (crater)
 * Inanna
 * Inbred (film)
 * Inca (video game)
 * Inca II: Wiracocha
 * Inca Roads (song)
 * Inception
 * Inceptisol
 * Inclination instability
 * Inclined orbit
 * Incoherent broad-band cavity-enhanced absorption spectroscopy
 * Incompatible element
 * Inconstant Moon
 * Inconstant Star
 * Incubation (ritual)
 * Incubus
 * Incursion
 * Independence Day (1996 film)
 * Independence Day (book series)
 * Independence Day (franchise)
 * Independence Day (video game)
 * Independence Day UK
 * Independence Day: Resurgence
 * Independence High School (San Jose, California)
 * Independence War 2: Edge of Chaos
 * Independence-X Aerospace
 * Independent movie theater
 * Index (crater)
 * Index Catalogue of Visual Double Stars
 * Index of Earth science articles
 * Index of biological integrity
 * Index of drinking establishment–related articles
 * Index of geology articles
 * Index of meteorology articles
 * Index of soil-related articles
 * Index of solar energy articles
 * Index of ufology articles
 * Index to Marine & Lacustrine Geological Samples
 * India Climate Collaborative
 * India Meteorological Department
 * India-based Neutrino Observatory
 * Indian Astronomical Observatory
 * Indian Centre for Space Physics
 * Indian Data Relay Satellite System
 * Indian Deep Space Network
 * Indian Geophysical Union
 * Indian Hills Theater
 * Indian Human Spaceflight Programme
 * Indian Initiative in Gravitational-wave Observations
 * Indian Institute of Astrophysics
 * Indian Institute of Remote Sensing
 * Indian Institute of Soil Science
 * Indian Institute of Space Science and Technology
 * Indian Mini Satellite bus
 * Indian National Centre for Ocean Information Services
 * Indian National Committee for Space Research
 * Indian National Space Promotion and Authorisation Centre
 * Indian Network on Climate Change Assessment
 * Indian Ocean
 * Indian Ocean Experiment
 * Indian Regional Navigation Satellite System
 * Indian Remote Sensing Programme
 * Indian Shield
 * Indian Society for Ecological Economics
 * Indian Society of Remote Sensing
 * Indian Space Research Organisation
 * Indian Space Science Data Centre
 * Indian Youth Climate Network
 * Indian astronomy
 * Indian environmental law
 * Indian meridian
 * Indian national calendar
 * Indiana Asteroid Program
 * Indiana Jones and the Kingdom of the Crystal Skull
 * Indiana Space Grant Consortium
 * Indiana Theatre (Indianapolis)
 * Indiana University Bloomington
 * Indicative limit value
 * Indicator bacteria
 * Indiction
 * Indigenous (ecology)
 * Indigenous mapping
 * Indigo carmine
 * Indiplon
 * Indira Gandhi Planetarium
 * Indirect DNA damage
 * Individual action on climate change
 * Indo-Pacific
 * IndoStar-1
 * Indochinite
 * Indomalayan realm
 * Indra
 * Induced gravity
 * Induction coil
 * Induction plasma
 * Inductively coupled plasma
 * Inductively coupled plasma atomic emission spectroscopy
 * Indus (constellation)
 * Indus Vallis
 * Indus in Chinese astronomy
 * Industrial ecology
 * Industrial waste
 * Industrial wastewater treatment
 * Ineke De Moortel
 * Inelastic neutron scattering
 * Inert gas
 * Inert gas asphyxiation
 * Inertial Stellar Compass
 * Inertial Upper Stage
 * Inertial confinement fusion
 * Inertial electrostatic confinement
 * Inertial frame of reference
 * Inertial fusion power plant
 * Inertial navigation system
 * Inertial reference unit
 * Inertialess drive
 * Inex
 * Infant bed
 * Infant crying
 * Infant sleep training
 * Infantile apnea
 * Inferior and superior planets
 * Inferno (video game)
 * Inferno!
 * Infestation (comics)
 * Infestation 2
 * Infiltration (hydrology)
 * Infiltration basin
 * Infiltration gallery
 * Infiltration/Inflow
 * Infiltrometer
 * Infinite Ryvius
 * Infinite Space
 * Infinite Undiscovery
 * Infinite Worlds (book)
 * Infinite derivative gravity
 * Infinite-axis telescope
 * Infinity (philosophy)
 * Infinity (upcoming video game)
 * Infinity's Shore
 * Inflatable Antenna Experiment
 * Inflatable space habitat
 * InflateSail
 * Inflation (cosmology)
 * Inflationary epoch
 * Inflaton
 * Inflow (hydrology)
 * Infomercials (TV specials)
 * Information Center for Dangerous Goods
 * Information Gathering Satellite
 * Information display systems
 * Information ecology
 * Information panspermia
 * Infoterra Ltd
 * Infrared Array Camera
 * Infrared Optical Telescope Array
 * Infrared Science Archive
 * Infrared Space Observatory
 * Infrared Spatial Interferometer
 * Infrared Spectrometer for ExoMars
 * Infrared astronomy
 * Infrared atmospheric sounding interferometer
 * Infrared cirrus
 * Infrared compact catalogue
 * Infrared dark cloud
 * Infrared excess
 * Infrared interferometer spectrometer and radiometer
 * Infrared photodissociation spectroscopy
 * Infrared spectroscopy
 * Infrared spectroscopy correlation table
 * Infrared telescope
 * Infrared window
 * Infusion (band)
 * Inga (film)
 * Ingagi
 * Ingalls (crater)
 * Ingalls Shipbuilding
 * Inghirami (crater)
 * Inglis–Teller equation
 * Ingram Planetarium
 * Ingression coast
 * Ingrid Stairs
 * Ingrid van Houten-Groeneveld
 * Ingta Formation
 * Inguma
 * Inhalant
 * Inhomogeneous cosmology
 * Inhumans (TV series)
 * Initial mass function
 * Initial singularity
 * Initial value formulation (general relativity)
 * Initiative for Interstellar Studies
 * Injection well
 * Injun (satellite)
 * Inktomi (crater)
 * Inland salt marsh
 * Inland sea (geology)
 * Inlet
 * Inmarsat
 * Inmarsat-3 F4
 * Inmarsat-4 F1
 * Inmarsat-4 F3
 * Inmarsat-4A F4
 * Inmarsat-6 F1
 * Inn sign
 * Inner core super-rotation
 * Inner moon
 * Innermost inner core
 * Innermost stable circular orbit
 * Innes (crater)
 * Innes' star
 * Innocence (Star Trek: Voyager)
 * Innocent When You Dream (song)
 * Innovative Interstellar Explorer
 * Innovative Satellite Technology Demonstration-1
 * Innovative Solutions In Space
 * Innovative Space-based Radar Antenna Technology
 * Innoventions (Disneyland)
 * Innsbruck Observatory
 * Insanely Twisted Shadow Planet
 * Insect Habitat
 * Insect collecting
 * Insectoid
 * Insel orogeny
 * Inseminoid
 * Insheim Geothermal Power Station
 * Inside GNSS
 * Insight Guides
 * Insomnia
 * Insomnia (Daya song)
 * Insomnia (Faithless song)
 * Inspiration Mars Foundation
 * Instability
 * Instability strip
 * Institut Pierre Simon Laplace
 * Institut d'astrophysique de Paris
 * Institut de radioastronomie millimétrique
 * Institut für Meereskunde Kiel
 * Institut océanographique
 * Institute for Advanced Sustainability Studies
 * Institute for Astronomy (Hawaii)
 * Institute for Astronomy and Astrophysics
 * Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing
 * Institute for Biodiversity and Environmental Research
 * Institute for Chemistry and Biology of the Marine Environment
 * Institute for Computational Cosmology
 * Institute for Cosmic Ray Research
 * Institute for Earth System Preservation
 * Institute for Environmental Solutions
 * Institute for Functional Imaging of Materials
 * Institute for Plasma Research
 * Institute for Solar Physics
 * Institute for Space Applications and Remote Sensing
 * Institute for Theoretical Atomic, Molecular and Optical Physics
 * Institute of Aerospace Medicine
 * Institute of Air Quality Management
 * Institute of Astronomy of the Bulgarian Academy of Sciences
 * Institute of Astronomy, Cambridge
 * Institute of Astronomy, NCU
 * Institute of Atmospheric Physics AS CR
 * Institute of Cosmology and Gravitation, University of Portsmouth
 * Institute of Ecotechnics
 * Institute of Geomatics
 * Institute of Geophysics
 * Institute of Hydrology, Meteorology and Environmental Studies (Colombia)
 * Institute of Materials, Minerals and Mining
 * Institute of Physics Edward Appleton Medal and Prize
 * Institute of Soil Science and Agrochemistry
 * Institute of Space Propulsion
 * Institute of Space Technology
 * Institute of Space and Astronautical Science
 * Institute of Space and Planetary Astrophysics
 * Institute of Space and Telecommunications Law
 * Institute of Theoretical Astrophysics
 * Institute of the Right of Peace and Development - IDPD
 * Institution of Environmental Sciences
 * Institution of Mining and Metallurgy
 * Instituto Nacional de Técnica Aeroespacial
 * Instituto de Astrofísica de Andalucía
 * Instituto de Astrofísica de Canarias
 * Instituto de Astronomía Teórica y Experimental
 * Instituto de Plasmas e Fusão Nuclear
 * Instream use
 * Instrument Neutral Distributed Interface
 * Instrument flight rules
 * Instrument landing system
 * Instrument of the Primum Mobile
 * Instrumental magnitude
 * Insulantarctica
 * Insular biogeography
 * Int-Ball
 * Intasat
 * Integral energy
 * Integral field spectrograph
 * Integrated Applications Promotion
 * Integrated Biosphere Simulator
 * Integrated Data Viewer
 * Integrated Flux Nebula
 * Integrated Forecast System
 * Integrated Lander Vehicle
 * Integrated Ocean Drilling Program
 * Integrated Ocean Observing System
 * Integrated Overhead SIGINT Architecture
 * Integrated Powerhead Demonstrator
 * Integrated Science Instrument Module
 * Integrated Science Investigation of the Sun
 * Integrated Software for Imagers and Spectrometers
 * Integrated Space Cell
 * Integrated Truss Structure
 * Integrated assessment modelling
 * Integrated cargo carrier
 * Integrated catchment management
 * Integrated coastal zone management
 * Integrated geography
 * Integrated modification methodology
 * Integrated modular avionics
 * Integrated multi-trophic aquaculture
 * Integrated pest management
 * Integration of traffic data with navigation systems
 * Intel Array Visualizer
 * Intelligent falling
 * Intelligent street lighting
 * Intelsat
 * Intelsat 10-02
 * Intelsat 11
 * Intelsat 14
 * Intelsat 15
 * Intelsat 16
 * Intelsat 19
 * Intelsat 1R
 * Intelsat 2
 * Intelsat 20
 * Intelsat 21
 * Intelsat 22
 * Intelsat 23
 * Intelsat 24
 * Intelsat 26
 * Intelsat 27
 * Intelsat 28
 * Intelsat 29e
 * Intelsat 33e
 * Intelsat 34
 * Intelsat 35e
 * Intelsat 36
 * Intelsat 3R
 * Intelsat 5
 * Intelsat 601
 * Intelsat 602
 * Intelsat 603
 * Intelsat 604
 * Intelsat 605
 * Intelsat 701
 * Intelsat 702
 * Intelsat 704
 * Intelsat 705
 * Intelsat 706
 * Intelsat 707
 * Intelsat 708
 * Intelsat 709
 * Intelsat 8
 * Intelsat 801
 * Intelsat 802
 * Intelsat 804
 * Intelsat 805
 * Intelsat 9
 * Intelsat 901
 * Intelsat 902
 * Intelsat 903
 * Intelsat 904
 * Intelsat 905
 * Intelsat 906
 * Intelsat 907
 * Intelsat Americas
 * Intelsat I
 * Intelsat II F-1
 * Intelsat II F-2
 * Intelsat II F-3
 * Intelsat II F-4
 * Intelsat III F-1
 * Intelsat III F-2
 * Intelsat III F-3
 * Intelsat III F-4
 * Intelsat III F-5
 * Intelsat III F-6
 * Intelsat III F-7
 * Intelsat III F-8
 * Intelsat IV F-1
 * Intelsat IV F-2
 * Intelsat IV F-3
 * Intelsat IV F-4
 * Intelsat IV F-5
 * Intelsat IV F-6
 * Intelsat IV F-7
 * Intelsat IV F-8
 * Intelsat IVA F-1
 * Intelsat IVA F-2
 * Intelsat IVA F-3
 * Intelsat IVA F-4
 * Intelsat IVA F-5
 * Intelsat IVA F-6
 * Intelsat K
 * Intelsat V F-1
 * Intelsat V F-2
 * Intelsat V F-3
 * Intelsat V F-4
 * Intelsat V F-5
 * Intelsat V F-6
 * Intelsat V F-7
 * Intelsat V F-8
 * Intelsat V F-9
 * Intelsat VA F-10
 * Intelsat VA F-11
 * Intelsat VA F-12
 * Intelsat VA F-13
 * Intelsat VA F-14
 * Intelsat VA F-15
 * Intelsat VI
 * Intense Pulsed Neutron Source
 * Intensity (physics)
 * Intensity (video game)
 * Intensity interferometer
 * Intensity mapping
 * Intensive crop farming
 * Inter caetera
 * Inter-Agency Space Debris Coordination Committee
 * Inter-Range Instrumentation Group
 * Inter-Services Topographic Department
 * Inter-University Centre for Astronomy and Astrophysics
 * Inter-crater plains on Mercury
 * InterPlaNet
 * InterPlanetary Network
 * InterRidge
 * Interacting binary star
 * Interacting galaxy
 * Interactive visualization
 * Interagency GPS Executive Board
 * Interbasin transfer
 * Interbol
 * Intercalary month (Egypt)
 * Intercept method
 * Interception (water)
 * Interchange instability
 * Intercontinental ballistic missile
 * Interdimensional being
 * Interdimensional hypothesis
 * Interdunal wetland
 * Interesting Times
 * Interface Region Imaging Spectrograph
 * Interference (novel)
 * Interference ripples
 * Interferometric microscopy
 * Interferometric synthetic-aperture radar
 * Interferometric visibility
 * Interferometry
 * Interflow
 * Intergalactic dust
 * Intergalactic star
 * Intergalactic travel
 * Interim Control Module
 * Interior Characterization of Europa using Magnetometry
 * Interior Low Plateaus
 * Interior Schwarzschild metric
 * Interkosmos
 * Interlake
 * Interlocking spur
 * Intermediate General Circulation Model
 * Intermediate eXperimental Vehicle
 * Intermediate long-fingered bat
 * Intermediate luminosity optical transient
 * Intermediate polar
 * Intermediate slit-faced bat
 * Intermediate spiral galaxy
 * Intermediate-Current Stability Experiment
 * Intermediate-mass black hole
 * Intermediate-range ballistic missile
 * Intermontane
 * Internal conversion (chemistry)
 * Internal drainage board
 * Internal heating
 * Internal structure of the Moon
 * Internal tide
 * Internal waters
 * International (Amtrak train)
 * International Academy of Astronautics
 * International Arctic Research Center
 * International Association for Engineering Geology and the Environment
 * International Association for the Advancement of Space Safety
 * International Association for the Physical Sciences of the Oceans
 * International Association of Astronomical Artists
 * International Association of Cryospheric Sciences
 * International Association of Geoanalysts
 * International Association of Geodesy
 * International Association of Hydrological Sciences
 * International Association of Meteorology and Atmospheric Sciences
 * International Association of People-Environment Studies
 * International Association of Seismology and Physics of the Earth's Interior
 * International Association of Space Activities Participants
 * International Association of Volcanology and Chemistry of the Earth's Interior
 * International Astrology Day
 * International Astronautical Congress
 * International Astronautical Federation
 * International Astronomical Union
 * International Astronomical Youth Camp
 * International Astronomy Olympiad
 * International Astrostatistics Association
 * International Atomic Time
 * International Berthing and Docking Mechanism
 * International Biological Program
 * International Cartographic Association
 * International Celestial Reference Frame
 * International Celestial Reference System
 * International Center for Relativistic Astrophysics
 * International Centre for Diffraction Data
 * International Centre for Geohazards
 * International Centre for Radio Astronomy Research
 * International Charter 'Space and Major Disasters'
 * International Classification of Sleep Disorders
 * International Code of Area Nomenclature
 * International Cometary Explorer
 * International Commission on Stratigraphy
 * International Commission on the History of Geological Sciences
 * International Committee on Anthropogenic Soils
 * International Comprehensive Ocean-Atmosphere Data Set
 * International Conference on Environmental Systems
 * International Conference on Green Chemistry
 * International Continental Scientific Drilling Program
 * International Cosmos Prize
 * International Dark-Sky Association
 * International Day of Human Space Flight
 * International Designator
 * International Docking Adapter
 * International Docking System Standard
 * International Earth Rotation and Reference Systems Service
 * International Express
 * International Federation of Surveyors
 * International Geodetic Student Organisation
 * International Geology Review
 * International Geophysical Year
 * International Geoscience Programme
 * International Geosphere-Biosphere Programme
 * International Glaciological Society
 * International Halley Watch
 * International Heliophysical Year
 * International Humic Substances Society
 * International Hydrographic Organization
 * International Institute of Air and Space Law
 * International Institute of Space Commerce
 * International Journal of Applied Earth Observation and Geoinformation
 * International Journal of Astrobiology
 * International Journal of Biometeorology
 * International Journal of Climatology
 * International Journal of Digital Earth
 * International Journal of Earth Sciences
 * International Journal of Environmental Research
 * International Journal of Environmental Science and Technology
 * International Journal of Geographical Information Science
 * International Journal of Greenhouse Gas Control
 * International Journal of Remote Sensing
 * International Journal of Speleology
 * International Journal of Urban and Regional Research
 * International Latitude Observatory
 * International Launch Services
 * International Lunar Exploration Working Group
 * International Lunar Network
 * International Lunar Observatory
 * International Lunar Resources Exploration Concept
 * International Magnetospheric Study
 * International Map Industry Association
 * International Mars Exploration Working Group
 * International Meteor Organization
 * International Meteorological Organization
 * International Meteorological Organization Prize
 * International Mineralogical Association
 * International Mobile Satellite Organization
 * International Muon Ionization Cooling Experiment
 * International Near-Earth Asteroid Survey
 * International Olympiad on Astronomy and Astrophysics
 * International Permafrost Association
 * International Planetarium Society
 * International Planetary Data Alliance
 * International Planetary Patrol Program
 * International Polar Year
 * International Programme on the State of the Ocean
 * International Pulsar Timing Array
 * International Reference Ionosphere
 * International Scientific Optical Network
 * International Society for Ecological Economics
 * International Society for Environmental Epidemiology
 * International Society for Environmental Ethics
 * International Society for Photogrammetry and Remote Sensing
 * International Society of Limnology
 * International Soil Reference and Information Centre
 * International Solar-Terrestrial Physics Science Initiative
 * International Space Development Conference
 * International Space Education Institute
 * International Space Orchestra
 * International Space Science Institute
 * International Space Settlement Design Competition
 * International Space Station
 * International Space Station Multilateral Coordination Board
 * International Space Station programme
 * International Space Year
 * International Standard Atmosphere
 * International Standard Payload Rack
 * International Star Registry
 * International Symposium for Personal and Commercial Spaceflight
 * International UFO Museum and Research Center
 * International Ultraviolet Explorer
 * International Union for Cooperation in Solar Research
 * International Union for Quaternary Research
 * International Union for Vacuum Science, Technique and Applications
 * International Union of Geodesy and Geophysics
 * International Union of Geological Sciences
 * International Union of Soil Sciences
 * International Virtual Observatory Alliance
 * International Volcanic Ashfall Impacts Working Group
 * International Volcanic Health Hazard Network
 * International X-ray Observatory
 * International Year of Astronomy
 * International Year of Biodiversity
 * International Year of Planet Earth
 * International Year of Soil
 * International communication
 * International community
 * International trade and water
 * Internet Routing in Space
 * Interobject
 * Interorbital Systems
 * Interplanetary Flight: An Introduction to Astronautics
 * Interplanetary Internet
 * Interplanetary Nano-Spacecraft Pathfinder in Relevant Environment
 * Interplanetary Scintillation Array
 * Interplanetary Transport Network
 * Interplanetary contamination
 * Interplanetary dust cloud
 * Interplanetary magnetic field
 * Interplanetary medium
 * Interplanetary scintillation
 * Interplanetary spaceflight
 * Interpretation of Dreams (Antiphon)
 * Interpretations of 2001: A Space Odyssey
 * Interruption (map projection)
 * Intersolar
 * Intersputnik
 * Interstate Express
 * Interstella 5555: The 5tory of the 5ecret 5tar 5ystem
 * Interstellar (film)
 * Interstellar Boundary Explorer
 * Interstellar Low Ways
 * Interstellar Mapping and Acceleration Probe
 * Interstellar Overdrive
 * Interstellar Probe (1999)
 * Interstellar Technologies
 * Interstellar ark
 * Interstellar cloud
 * Interstellar communication
 * Interstellar formaldehyde
 * Interstellar ice
 * Interstellar medium
 * Interstellar object
 * Interstellar probe
 * Interstellar travel
 * Interstellar war
 * Interster
 * Intertidal wetland
 * Intertidal zone
 * Intervalence charge transfer
 * Intervertebral disc damage and spaceflight
 * Inti
 * Intihuatana
 * Intihuatana, Urubamba
 * Intimacies of a Prostitute
 * Into That Silent Sea
 * Into the Comet
 * Into the Stars
 * Into the Void (Black Sabbath song)
 * Into the Void (video game)
 * Intra-arc basin
 * Intraclasts
 * Intracluster medium
 * Intrasporangiaceae
 * Intratracheal instillation
 * Intrinsically photosensitive retinal ganglion cell
 * Introduction to M-theory
 * Introduction to Outer Space
 * Introduction to Statistics (Community)
 * Introduction to general relativity
 * Introduction to the mathematics of general relativity
 * Intruders (miniseries)
 * Intrusive Suite of Buena Vista Crest
 * Intrusive Suite of Sonora Pass
 * Intrusive Suite of Yosemite Valley
 * Intrusive rock
 * Intrusive suite
 * Intuitive Machines
 * Inuit astronomy
 * Inundation
 * Inuvik (crater)
 * Invader Zim
 * Invader Zim (comics)
 * Invaders from Mars (1953 film)
 * Invaders from Mars (1986 film)
 * Invariable plane
 * Invasion (2020 film)
 * Invasion (American TV series)
 * Invasion (miniseries)
 * Invasion America
 * Invasion of Astro-Monster
 * Invasion of the Body Snatchers
 * Invasion of the Body Snatchers (1978 film)
 * Invasion of the Cat-People
 * Invasion! (Arrowverse)
 * Invasion: Earth (TV series)
 * Inverness Corona
 * Inverse photoemission spectroscopy
 * Inverse synthetic-aperture radar
 * Inversion temperature
 * Inversions (novel)
 * Invertebrate drift
 * Inverted Earth
 * Inverted relief
 * Inverted river delta
 * Invincible (Muse song)
 * Invisible Woman
 * Io (moon)
 * Io Volcano Observer
 * Iocaste (moon)
 * Iodine Satellite
 * Ioffe (crater)
 * Ion Hobana
 * Ion acoustic wave
 * Ion beam
 * Ion cyclotron resonance
 * Ion of Chios
 * Ion thruster
 * Ion wind
 * Ion-beam shepherd
 * Ionization cone
 * Ionization instability
 * Ionized-air glow
 * Ionochromism
 * Ionosat-Micro
 * Ionosonde
 * Ionosphere
 * Ionosphere-Thermosphere Storm Probes
 * Ionospheric Connection Explorer
 * Ionospheric Occultation Experiment
 * Ionospheric absorption
 * Ionospheric dynamo region
 * Ionospheric heater
 * Ionospheric pierce point
 * Ionospheric sounding
 * Ionospheric storm
 * Iosif Shklovsky
 * Iota Andromedae
 * Iota Antliae
 * Iota Apodis
 * Iota Aquarii
 * Iota Aquilae
 * Iota Arae
 * Iota Arietis
 * Iota Aurigae
 * Iota Boötis
 * Iota Cancri
 * Iota Canis Majoris
 * Iota Capricorni
 * Iota Carinae
 * Iota Cassiopeiae
 * Iota Centauri
 * Iota Cephei
 * Iota Ceti
 * Iota Chamaeleontis
 * Iota Coronae Borealis
 * Iota Crateris
 * Iota Crucis
 * Iota Cygni
 * Iota Delphini
 * Iota Draconis
 * Iota Draconis b
 * Iota Eridani
 * Iota Fornacis
 * Iota Geminorum
 * Iota Gruis
 * Iota Herculis
 * Iota Horologii
 * Iota Horologii b
 * Iota Hydrae
 * Iota Leonis
 * Iota Leporis
 * Iota Librae
 * Iota Lupi
 * Iota Lyrae
 * Iota Microscopii
 * Iota Muscae
 * Iota Normae
 * Iota Ophiuchi
 * Iota Orionis
 * Iota Pegasi
 * Iota Persei
 * Iota Phoenicis
 * Iota Pictoris
 * Iota Piscis Austrini
 * Iota Piscium
 * Iota Reticuli
 * Iota Sagittarii
 * Iota Scorpii
 * Iota Sculptoris
 * Iota Serpentis
 * Iota Tauri
 * Iota Telescopii
 * Iota Trianguli
 * Iota Trianguli Australis
 * Iota Tucanae
 * Iota Ursae Majoris
 * Iota Virginis
 * Iota Volantis
 * Iota1 Cygni
 * Iota1 Librae
 * Iota1 Muscae
 * Iota1 Normae
 * Iota1 Scorpii
 * Iota2 Cygni
 * Iota2 Fornacis
 * Iota2 Muscae
 * Iota2 Normae
 * Iota2 Scorpii
 * Iovantucarus
 * Ipomoea alba
 * Ipomoea violacea
 * Iqbal Ahmed
 * Ira Abbott
 * Ira Sprague Bowen
 * Iran Aviation Industries Organization
 * Iranian National Observatory
 * Iranian Plateau
 * Iranian Space Agency
 * Iranian Space Research Center
 * Iranian crewed spacecraft
 * Irasema Alcántara-Ayala
 * Irazú (satellite)
 * Irem Y. Tumer
 * Irene D. Long
 * Irene Schloss
 * Irene Scruggs
 * Irene Sänger-Bredt
 * Irensaga Montes
 * Iridium
 * Iridium 33
 * Iridium 7
 * Iridium 77
 * Iridium Communications
 * Iridium Jazz Club
 * Iridium anomaly
 * Iridium satellite constellation
 * Irina Belskaya
 * Irina Solovyova
 * Iris Nebula
 * Irish Astronomical Society
 * Irish Federation of Astronomical Societies
 * Irish Pub, Kabul
 * Irish Sea Glacier
 * Irish Transverse Mercator
 * Irma's injection
 * Irnini Mons
 * Iron Duke (pub)
 * Iron Foot Jack
 * Iron Gold
 * Iron Invader
 * Iron Man
 * Iron Man (Buddhist statue)
 * Iron Man Experience
 * Iron Seed
 * Iron Sky
 * Iron Sky: Invasion
 * Iron Sky: The Coming Race
 * Iron catastrophe
 * Iron cycle
 * Iron fertilization
 * Iron group
 * Iron nanoparticle
 * Iron peak
 * Iron planet
 * Iron snow
 * Iron star
 * Iron-oxidizing bacteria
 * Ironwood Theatre
 * Iron–nickel alloy
 * Irradiance
 * Irregular galaxy
 * Irregular mare patch
 * Irregular moon
 * Irregular sleep–wake rhythm
 * Irregular variable
 * Irrigation
 * Irrigation scheduling
 * Irumide Belt
 * Irv Docktor
 * Irvin Kershner
 * Irvine CubeSat STEM Program
 * Irvine–Michigan–Brookhaven (detector)
 * Irving Johnson
 * Irving Plaza
 * Irwin I. Shapiro
 * Irwin screen
 * Is There Anybody Out There?
 * Is There Sex After Death?
 * Isa Kelemechi
 * Isaac Albalia
 * Isaac Argyros
 * Isaac Asimov
 * Isaac Asimov's Guide to Earth and Space
 * Isaac Fletcher (MP)
 * Isaac Habrecht II
 * Isaac Israeli ben Joseph
 * Isaac Newton
 * Isaac Newton Group of Telescopes
 * Isaac Newton Telescope
 * Isaac Newton's occult studies
 * Isaac Perrins
 * Isaac Roberts
 * Isaac Roberts' Observatory
 * Isaac ibn Sid
 * Isaac ibn al-Ahdab
 * Isabella (crater)
 * Isabella M. Gioia
 * Isadore Epstein
 * Isaev (crater)
 * Isaiah 14
 * Isambard Owen
 * Isan orogeny
 * Isbanir Fossa
 * Ise Grand Shrine
 * Isfahan Observatory
 * Ishirō Honda
 * Ishtar Terra
 * Isidis Planitia
 * Isidor Isaac Rabi
 * Isidore of Seville
 * Isidorus (crater)
 * Isis (lunar crater)
 * Isis Pogson
 * Islam and astrology
 * Island Arc (journal)
 * Island Lagoon Tracking Station
 * Islands in the Sky
 * Islands in the Sky: Bold New Ideas for Colonizing Space
 * Islands of Space
 * Isle of Skye (bar)
 * Isle of the Dead (Zelazny novel)
 * Isles of Scilly
 * Islet
 * Ismail Mustafa al-Falaki
 * Ismail Patel
 * Ismenius Lacus quadrangle
 * Iso-Heikkilä Observatory
 * Iso-Naakkima
 * Isoazimuth
 * Isobutanol
 * Isobutyronitrile
 * Isogenous series
 * Isohypsibius
 * Isoinertial
 * Isolated horizon
 * Isoline retrieval
 * Isomeric shift
 * Isonoe (moon)
 * Isopach map
 * Isoplanetic patch
 * Isoptericola halotolerans
 * Isopycnic
 * Isosbestic point
 * Isostasy
 * Isostatic depression
 * Isotope hydrology
 * Isotopic labeling
 * Isotopic shift
 * Isotropic beacon
 * Isotropic coordinates
 * Ispace (Japanese company)
 * Israel Meteorological Service
 * Israel Space Agency
 * Israeli Astronomical Association
 * Israeli Geographical Association
 * Israeli Nano Satellite Association
 * Issus Aussaguel
 * Istakhri
 * Istanbul UFO Museum
 * Istanbul University Observatory
 * Istanbul fireworks disaster
 * Ister Chaos
 * Istituto di Radioastronomia di Bologna
 * Istrebitel Sputnikov
 * Isuzu
 * It Conquered the World
 * It Hurts
 * It Would Be So Nice
 * It! The Terror from Beyond Space
 * It's Halloween
 * It's Only Rock & Roll (TV series)
 * It's a Bikini World
 * It's the Great Pancake, Cleveland Brown
 * It's the Great Pumpkin, Charlie Brown
 * Italian Aerospace Research Centre
 * Italian Amateur Astronomers Union
 * Italian Space Agency
 * Italian names in the solar system
 * Itapetinga Radio Observatory
 * Itaquascon
 * Ithaca Chasma
 * Itinerarium exstaticum
 * Itinerary file
 * Itqiy meteorite
 * Ituran
 * Iturralde crater
 * Ituxi Vallis
 * Iunius (month)
 * Ius Chasma
 * Iusaaset
 * Ivan A. Getting
 * Ivan Aničin
 * Ivan Gough
 * Ivan Ivanovich (Vostok programme)
 * Ivan Paskvić
 * Ivan Roudyk
 * Ivan Tyrrell
 * Ivan Urgant
 * Ivan Visin
 * Ivan Yarkovsky
 * Ivan's hammer
 * IvanAnywhere
 * Ivano Bertini
 * Ivanpah orogeny
 * Ives (crater)
 * Ives–Stilwell experiment
 * Ivor Robinson (physicist)
 * Ivy Hooks
 * Iván Almár
 * Iwahashi Zenbei
 * Izakaya
 * Izanagi
 * Izlel ye Delyo Haydutin
 * Izold Pustõlnik
 * Izquierdo (crater)
 * Izsak (crater)
 * Izumo (train)
 * J Bole Toh Jadoo
 * J Centauri
 * J Puppis
 * J band (infrared)
 * J-I
 * J-PAS
 * J-Wear
 * J-aggregate
 * J-type asteroid
 * J. A. Hadfield
 * J. A. Lawrence
 * J. Allen Hynek
 * J. Allen St. John
 * J. C. Coleman
 * J. D. Bernal
 * J. D.'s Revenge
 * J. Davy Kirkpatrick
 * J. E. Talbot
 * J. F. S. Stone
 * J. Francis McComas
 * J. G. Ballard
 * J. G. Farrell
 * J. Grant Thiessen
 * J. Halcombe Laning
 * J. Herschel (crater)
 * J. J. Abrams
 * J. J. Benítez
 * J. Keith Fraser
 * J. Lamar Worzel
 * J. Lawrence Smith Medal
 * J. Marvin Herndon
 * J. O. Bailey
 * J. Pauly & Sohn
 * J. Posadas
 * J. R. Ackerley
 * J. Richard Fisher
 * J. Richard Gott
 * J. Robert Oppenheimer
 * J. Thomas Dickinson
 * J. Tuzo Wilson Medal
 * J. Val Klump
 * J. Vernon Shea
 * J. Ward Moody
 * J. Wayne Littles
 * J.G. Melon
 * J.M. Frey
 * J002E3
 * J0815+4729
 * J1000+0221
 * J1124+4535
 * J1719-143
 * JAWSAT
 * JAXA
 * JAXA Astronaut Corps
 * JB's Dudley
 * JCPM Yakiimo Station
 * JCSAT-1
 * JCSAT-11
 * JCSAT-15
 * JCSAT-16
 * JCSAT-17
 * JCSAT-1B
 * JCSAT-2
 * JCSAT-2A
 * JCSAT-2B
 * JCSAT-3
 * JCSAT-3A
 * JCSAT-4A
 * JCSAT-4B
 * JCSAT-5A
 * JCSAT-RA
 * JEDI
 * JEM-EUSO
 * JERS-1
 * JJ Eldridge
 * JJ Villard's Fairy Tales
 * JKCS 041
 * JP Aerospace
 * JP11
 * JPL Horizons On-Line Ephemeris System
 * JPL Science Division
 * JPL Small-Body Database
 * JPSS-2
 * JSAT (satellite constellation)
 * JSAT Corporation
 * JSC Kuznetsov
 * JSC Moon Base
 * JUICE (software)
 * JULES
 * JUNQ and IPOD
 * JY1-SAT
 * Ja slit-faced bat
 * Jaan Einasto
 * Jabberwocky
 * Jabel Waqf as Suwwan crater
 * Jabir ibn Aflah
 * Jabir ibn Hayyan
 * Jablonski diagram
 * Jacchia Reference Atmosphere
 * Jack Arnold (director)
 * Jack B. Newton
 * Jack Bros.
 * Jack Clemons
 * Jack Coggins
 * Jack Cohen (biologist)
 * Jack D. Elliot
 * Jack D. Fischer
 * Jack Dangermond
 * Jack Dann
 * Jack Flash
 * Jack Frost (1997 film)
 * Jack G. Hills
 * Jack Garman
 * Jack Gaughan
 * Jack Green (geologist)
 * Jack Horkheimer
 * Jack J. Lissauer
 * Jack James (rocket engineer)
 * Jack King (NASA)
 * Jack Kinzler
 * Jack Kirby
 * Jack L. Chalker
 * Jack Layton
 * Jack Lousma
 * Jack Meadows (astronomer)
 * Jack O'Neill
 * Jack Paar
 * Jack Parsons (rocket engineer)
 * Jack Pepper
 * Jack Reacher: Never Go Back
 * Jack Rollins (producer)
 * Jack Ruby
 * Jack Sound
 * Jack Speer
 * Jack Straw's Castle, Hampstead
 * Jack Swigert
 * Jack Williamson
 * Jack Wisdom
 * Jack and the Beanstalk (1952 film)
 * Jack-o'-lantern
 * Jackie Brown
 * Jackson (crater)
 * Jackson School of Geosciences
 * Jackson-Gwilt Medal
 * Jacob Bekenstein
 * Jacob Cohen (scientist)
 * Jacob Heinrich Wilhelm Lehmann
 * Jacob Le Maire
 * Jacob Lund Fisker
 * Jacob Matijevic
 * Jacob Milich
 * Jacob Noel-Storr
 * Jacob Salatun
 * Jacob Weisman
 * Jacob ben David ben Yom Tov
 * Jacob ben Isaac Corsono
 * Jacob ben Machir ibn Tibbon
 * Jacob's Ladder
 * Jacob's staff
 * Jacoba Hol
 * Jacobi (crater)
 * Jacobi coordinates
 * Jacobi ellipsoid
 * Jacobi integral
 * Jacobus Kapteyn
 * Jacobus Kapteyn Telescope
 * Jacopo Dondi dell'Orologio
 * Jacqueline Hewitt
 * Jacqueline Lichtenberg
 * Jacqueline Mitton
 * Jacqueline van Gorkom
 * Jacques Beckers
 * Jacques Bergier
 * Jacques Blamont
 * Jacques Vallée
 * Jacques l'Hermite
 * Jadav Payeng
 * Jaffe profile
 * Jagannatha Samrat
 * Jaghmini
 * Jaguar (American rocket)
 * Jaguar (British rocket)
 * Jaguar (supercomputer)
 * Jaime Maussan
 * Jaimini Sutras
 * Jak 3
 * Jak II
 * Jak X: Combat Racing
 * Jak and Daxter
 * Jak and Daxter Collection
 * Jak and Daxter: The Lost Frontier
 * Jak and Daxter: The Precursor Legacy
 * Jakarta Planetarium and Observatory
 * Jake Garn
 * Jake Matijevic (rock)
 * Jake2
 * Jakku
 * Jakob Bartsch
 * Jakob Benjamin Fischer
 * Jakob Christmann
 * Jakob Karl Ernst Halm
 * Jakob Sederholm
 * Jakub Kresa
 * Jalal al-Din Yazdi
 * Jalkr
 * Jamaica ginger
 * Jamaican Maroon Creole
 * Jamaican owl
 * Jamal ad-Din Bukhari
 * James A. Dallas
 * James A. Isenberg
 * James A. Michener
 * James A. Pawelczyk
 * James Ayscough
 * James B. Garvin
 * James B. Kaler
 * James B. Pollack
 * James Bauer (astronomer)
 * James Benson
 * James Binney
 * James Blish
 * James Booth (mathematician)
 * James Bradley
 * James Breen (astronomer)
 * James Buchli
 * James Burke (space engineer)
 * James C. Adamson
 * James Cameron
 * James Cameron's Avatar: The Game
 * James Carpenter (astronomer)
 * James Challis
 * James Chappell
 * James Clark Ross
 * James Clerk Maxwell Telescope
 * James Colnett
 * James Cook
 * James Cook Observatory
 * James Corden
 * James Craig Watson
 * James Craig Watson Medal
 * James Creek
 * James Cuffey
 * James Curley (astronomer)
 * James D. Halsell
 * James D. Hays
 * James Davis (musician)
 * James Donald
 * James Doohan
 * James Dunlop
 * James Dunlop (astronomer)
 * James Dutton (astronaut)
 * James E. Faller
 * James E. Gunn (writer)
 * James E. McDonald
 * James Edward Keeler
 * James F. Bell, III
 * James F. Drake
 * James F. McGrath
 * James F. Reilly
 * James Fellowes (cricketer)
 * James Ferguson (American astronomer)
 * James Ferguson (Scottish astronomer)
 * James Franck
 * James Frenkel
 * James G. Blaine Society
 * James Gilbert Baker
 * James Gregory Telescope
 * James Gunn (astronomer)
 * James H. Fetzer
 * James H. Newman
 * James Hamilton (physicist)
 * James Hansen
 * James Harder
 * James Hartness
 * James Irwin
 * James Jeans
 * James K. Morrow
 * James Kasting
 * James Ketchell
 * James L. Elliot
 * James L. Green
 * James L. Hilton
 * James L. Kinsey
 * James L. Quinn (editor)
 * James Lavelle
 * James Lick
 * James Lick telescope
 * James Lowder
 * James M. Bardeen
 * James M. Kelly (astronaut)
 * James Magee (sea captain)
 * James Maxime DuPont
 * James May at the Edge of Space
 * James May on the Moon
 * James McDivitt
 * James McKerrow
 * James McMahon (astronomer)
 * James Melville Gilliss
 * James Michael Moran
 * James Muirden
 * James Nicoll
 * James Oberg
 * James Octavius Machell
 * James P. Bagian
 * James Pond 3
 * James R. Arnold
 * James R. Houck
 * James R. Kass
 * James Raymond Lawson
 * James Robinson (filk musician)
 * James Russell III
 * James S. Voss
 * James Short (mathematician)
 * James Simms (instrument maker)
 * James Slattin Martin Jr.
 * James South
 * James Spilker
 * James St. James
 * James Stone (physicist)
 * James Taranik
 * James Trotter (British Army officer)
 * James Turner (illustrator)
 * James V. Scotti
 * James W. Brault
 * James W. Christy
 * James W. Head
 * James W. Moseley
 * James W. Wood
 * James W. York
 * James Warhola
 * James Webb Space Telescope
 * James Westphal
 * James Wharram
 * James Whitcomb Riley (train)
 * James White (author)
 * James Whitney Young
 * James William Colbert Jr.
 * James William Grant (astronomer)
 * James Wilson (Archdeacon of Manchester)
 * James Wu
 * James Yenbamroong
 * James Zabiela
 * James van Hoften
 * Jamestown: Legend of the Lost Colony
 * Jami Deadly
 * Jamie Farnes
 * Jamie Jones (DJ)
 * Jamie Masada
 * Jamie Zawinski
 * Jamileh (dancer)
 * Jamin interferometer
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 * Jovian Europa Orbiter
 * Jovian Infrared Auroral Mapper
 * Jovian–Plutonian gravitational effect
 * Jovilabe
 * Jovis Tholus
 * Joy (crater)
 * Joy Crisp
 * Joy Theater
 * Joy Tivy
 * Joy of Sex (film)
 * Joy's Law (astronomy)
 * Joycelyn Harrison
 * João Faras
 * João Magueijo
 * João da Gama
 * Juan Carlos Castilla Zenobi
 * Juan Cole
 * Juan Fernández Ridge
 * Juan G. Sanguin
 * Juan Manuel Cajigal y Odoardo
 * Juan R. Cruz
 * Juan Sebastián Elcano
 * Juan de Zubileta
 * Juanita Coulson
 * Jubb Yussef (Joseph's Well)
 * Judah Ha-Levi (crater)
 * Judah ben Solomon ha-Kohen
 * Judah ibn Verga
 * Judas's belt
 * Judge Jules
 * Judgment Day (1999 film)
 * Judi-Dart
 * Judica-Cordiglia brothers
 * Judicial astrology
 * Judith Curry
 * Judith Gamora Cohen
 * Judith Kersey
 * Judith Lapierre
 * Judith Lean
 * Judith Merril
 * Judith Pipher
 * Judith Racusin
 * Judith Resnik
 * Judith S. Olson
 * Judoon
 * Judson B. Coit
 * Judson B. Coit Observatory
 * Judy Sullivan
 * Judy-Lynn del Rey
 * Jug Face
 * Jugband Blues
 * Jugnu (satellite)
 * Jule G. Charney Award
 * Jules Alfred Pierrot Deseilligny
 * Jules Verne (crater)
 * Jules Verne ATV
 * Jules Verne's Rocket to the Moon
 * Julia (1974 film)
 * Julia Dream
 * Julia Marcus
 * Julia Riley
 * Julian Chela-Flores
 * Julian Earls
 * Julian Scheer
 * Julian Thomas
 * Julian Thornton-Duesbery
 * Julian calendar
 * Julian day
 * Julian year (astronomy)
 * Julie Dillon
 * Julie Lutz
 * Julie McEnery
 * Julie Palais
 * Julie Payette
 * Julie Vinter Hansen
 * Julienne (crater)
 * Julienne Stroeve
 * Juliet (moon)
 * Julieta Norma Fierro Gossman
 * Julio Navarro (astrophysicist)
 * Julius August Christoph Zech
 * Julius Bauschinger
 * Julius Caesar (crater)
 * Julius Erasmus Hilgard
 * Julius Heinrich Franz
 * Julius Montgomery
 * Julius Obsequens
 * Julius Reichelt
 * Julius Scheiner
 * Julius Schiller
 * Julius Schwartz
 * Julnar (crater)
 * Jump (Alliance–Union universe)
 * JumpStart Adventures 3rd Grade: Mystery Mountain
 * Jumper (2008 film)
 * Jumpgate Evolution
 * Jumpgate: The Reconstruction Initiative
 * Jumpin' Jupiter
 * Jumping-Jupiter scenario
 * Jumpseat (satellite)
 * Jun Chen (astronomer)
 * Juna Kollmeier
 * Juncus subnodulosus–Cirsium palustre fen-meadow
 * June Bootids
 * June solstice
 * Jungfrau Park
 * Jungle Warriors
 * Junior Jack
 * Junior Vasquez
 * Junk Bond Observatory
 * Juno (spacecraft)
 * Juno I
 * Juno Radiation Vault
 * Juno V
 * Juno clump
 * JunoCam
 * Jupiter
 * Jupiter (mythology)
 * Jupiter (spacecraft)
 * Jupiter Ascending
 * Jupiter Dolichenus
 * Jupiter Europa Orbiter
 * Jupiter Five
 * Jupiter Ganymede Orbiter
 * Jupiter Icy Moons Explorer
 * Jupiter Icy Moons Orbiter
 * Jupiter LI
 * Jupiter LII
 * Jupiter LIV
 * Jupiter LIX
 * Jupiter LV
 * Jupiter LVI
 * Jupiter LXI
 * Jupiter LXIII
 * Jupiter LXIV
 * Jupiter LXIX
 * Jupiter LXVI
 * Jupiter LXVII
 * Jupiter LXVIII
 * Jupiter LXX
 * Jupiter LXXII
 * Jupiter Lander
 * Jupiter Magnetospheric Orbiter
 * Jupiter Mission 1999
 * Jupiter Moon
 * Jupiter barrier
 * Jupiter in fiction
 * Jupiter mass
 * Jupiter radius
 * Jupiter trojan
 * Jupiter's moons in fiction
 * Jupiter-C
 * Jura Mountains
 * Jura Observatory
 * Jura-Sternwarte Grenchen
 * Juraj Tóth
 * Jurassic Museum of Asturias
 * Jurgen Ziewe
 * Jurgen, A Comedy of Justice
 * Jurij Kasjan
 * Jurin's law
 * Juris Zarins
 * Just Before Dawn (1981 film)
 * Just Imagine
 * Just for the Hell of It
 * Justice (Red Dwarf)
 * Justice (band)
 * Justice League Dark: Apokolips War
 * Justice League: Alien Invasion 3D
 * Justice League: The New Frontier
 * Justin (robot)
 * Justin B. Ries
 * Justin Berkmann
 * Justine Larbalestier
 * Justine Shaw
 * Justus Georg Westphal
 * Juventae Chasma
 * Juxtlahuaca
 * Jwibulnori
 * Jyeshtha (month)
 * Jyeshtha (nakshatra)
 * Jyotiranjan Srichandan Ray
 * Jyotirmimamsa
 * Jyotirvidya Parisanstha
 * Jyotisha
 * Jyotiḥśāstra
 * Jyrki Kasvi
 * Jyā, koti-jyā and utkrama-jyā
 * Jämtlands Flyg
 * Jérôme Eugène Coggia
 * Jñānarāja
 * Jókai (crater)
 * Jón Eyþórsson
 * Jökulhlaup
 * Jökull
 * Jörg Colberg
 * Jörundur Svavarsson
 * Jørgen Christensen-Dalsgaard
 * Jügderdemidiin Gürragchaa
 * Jürgen Ehlers
 * Jürgen Meyer-ter-Vehn
 * Jürgen Schmitt (physicist)
 * K 1-2
 * K Carinae
 * K Centauri
 * K Missile family
 * K Puppis
 * K Velorum
 * K band (infrared)
 * K correction
 * K-10 robot
 * K-15 Krajina Missile
 * K-PAX
 * K-Swift
 * K-Swing
 * K-U ratio
 * K-band multi-object spectrograph
 * K-complex
 * K-distribution
 * K-edge
 * K-line (x-ray)
 * K-theory (physics)
 * K-type asteroid
 * K-type main-sequence star
 * K. H. Scheer
 * K. Kunaratnam
 * K. Megan McArthur
 * K. R. Ramanathan
 * K. S. Krishnan
 * K. Tempest Bradford
 * K. V. Sarma
 * K2-138
 * K2-138b
 * K2-141b
 * K2-146b
 * K2-148b
 * K2-155d
 * K2-18
 * K2-187
 * K2-18b
 * K2-19
 * K2-21b
 * K2-21c
 * K2-229
 * K2-229b
 * K2-22b
 * K2-239
 * K2-24
 * K2-24b
 * K2-24c
 * K2-28
 * K2-288Bb
 * K2-3
 * K2-315
 * K2-315b
 * K2-32
 * K2-33
 * K2-33b
 * K2-38b
 * K2-3b
 * K2-3c
 * K2-3d
 * K2-58
 * K2-72
 * K2-72b
 * K2-72c
 * K2-72d
 * K2-72e
 * K2K experiment
 * K3 surface
 * KA-SAT
 * KAGRA
 * KAIRA
 * KAIST Satellite Technology Research Center
 * KARI KSR-1
 * KARI KSR-3
 * KARMEN
 * KARST
 * KASCADE
 * KAT-7
 * KATRIN
 * KAUR (satellite bus)
 * KBC Void
 * KC Space Pirates
 * KELT-10
 * KELT-11b
 * KELT-18b
 * KELT-21b
 * KELT-2A
 * KELT-2Ab
 * KELT-4Ab
 * KELT-9b
 * KEO
 * KH 15D
 * KH-11 Kennen
 * KH-8 Gambit 3
 * KH-9 Hexagon
 * KIC 11026764
 * KIC 9832227
 * KICU-TV
 * KINT-IRGT
 * KK Andromedae
 * KKR 03
 * KKR 25
 * KKh 060
 * KKs 3
 * KM3NeT
 * KMS Fusion
 * KOI-2124.01
 * KOI-256
 * KOI-4878.01
 * KOI-74
 * KOI-7617.01
 * KOI-7923.01
 * KOI-81
 * KOMDIV-32
 * KOMPSAT
 * KOSMA
 * KOSMICA
 * KPD 1930+2752
 * KQ Puppis
 * KREEP
 * KSAT-2
 * KSEG : Korean Society of Earth and Exploration Geophysicists
 * KSR-2 (sounding rocket)
 * KStars
 * KSw 71
 * KT Eridani
 * KT Lupi
 * KTDU-35
 * KU Hydrae
 * KU Observatory
 * KVTK (rocket stage)
 * KW Sagittarii
 * KW – Das Heizkraftwerk
 * KX Andromedae
 * KXTV
 * KY Cygni
 * KZ Andromedae
 * Ka-Ata-Killa
 * Kaali crater
 * Kaare Aksnes
 * Kabaret OT.TO
 * Kabaret Olgi Lipińskiej
 * Kabaret Starszych Panów
 * Kabaret TEY
 * Kabaret Wagabunda
 * Kabarett
 * Kaboom (film)
 * Kachina Chasmata
 * Kacific Broadband Satellites
 * Kaena: The Prophecy
 * Kaesong Chomsongdae
 * Kaethe Katrin Wenzel
 * Kaffeklubben Island
 * Kagome crest
 * Kahala yoga
 * Kahausibware
 * Kai Siegbahn
 * Kai Tracid
 * KaiA
 * KaiB
 * KaiC
 * Kaidun meteorite
 * Kaigas
 * Kaikilani
 * Kaikō ROV
 * Kailasanathar Temple, Thingalur
 * Kainsaz meteorite
 * Kaiser (Martian crater)
 * Kaiser (lunar crater)
 * Kaizoku Sentai Gokaiger
 * Kaj Aage Gunnar Strand
 * Kaja Foglio
 * Kakuda Space Center
 * Kalai Arasi
 * Kalam SAT
 * Kalamazoo Valley Museum
 * Kalamos Island biological field station
 * Kalanchoe
 * Kalb–Ramond field
 * Kale (moon)
 * Kaleideum
 * Kalkaska sand
 * Kalki Bhagawan
 * Kalkkop crater
 * Kallichore (moon)
 * Kalpana Chawla
 * Kalpana-1
 * Kalpavriksh
 * Kalpin (crater)
 * Kaltes-Ekwa
 * Kaluga crater
 * Kaluli creation myth
 * Kalunga line
 * Kaluza–Klein theory
 * Kalwi & Remi
 * Kalyke
 * Kalypso (software)
 * Kamacite
 * Kamal Al-Yahya
 * Kamchatka meteor
 * Kame
 * Kame delta
 * Kamen Rider Fourze
 * Kamen Rider Kabuto
 * Kamensk crater
 * Kamerlingh Onnes (crater)
 * Kamil Hornoch
 * Kamioka Liquid Scintillator Antineutrino Detector
 * Kamioka Observatory
 * Kamiumi
 * Kamiyonanayo
 * Kanan Jarrus
 * Kanchan Pande
 * Kandilli Observatory
 * Kandinsky (crater)
 * Kandy Fong
 * Kane (crater)
 * Kane Ian
 * Kanehekili Fluctus
 * Kang Dong-suk
 * Kanjar Ro
 * Kankoh-maru
 * Kansas City Museum
 * Kansas City Zephyr
 * Kansas City–Florida Special
 * Kant (crater)
 * Kantha
 * Kantowski–Sachs metric
 * Kanyā
 * Kanzelhoehe Solar Observatory
 * Kao (crater)
 * Kao Ping-tse
 * Kaohsiung Astronomical Museum
 * Kaoru Ikeya
 * Kapitsa–Dirac effect
 * Kapitza instability
 * Kappa (rocket)
 * Kappa Andromedae
 * Kappa Andromedae b
 * Kappa Apodis
 * Kappa Aquarii
 * Kappa Aquilae
 * Kappa Arae
 * Kappa Arietis
 * Kappa Aurigae
 * Kappa Boötis
 * Kappa Cancri
 * Kappa Canis Majoris
 * Kappa Capricorni
 * Kappa Cassiopeiae
 * Kappa Centauri
 * Kappa Cephei
 * Kappa Ceti
 * Kappa Chamaeleontis
 * Kappa Columbae
 * Kappa Coronae Australis
 * Kappa Coronae Borealis
 * Kappa Coronae Borealis b
 * Kappa Crateris
 * Kappa Crucis (star)
 * Kappa Cygni
 * Kappa Cygnids
 * Kappa Delphini
 * Kappa Draconis
 * Kappa Eridani
 * Kappa Fornacis
 * Kappa Geminorum
 * Kappa Gruis
 * Kappa Herculis
 * Kappa Hydrae
 * Kappa Leonis
 * Kappa Leporis
 * Kappa Librae
 * Kappa Lupi
 * Kappa Lyrae
 * Kappa Normae
 * Kappa Ophiuchi
 * Kappa Pavonis
 * Kappa Pegasi
 * Kappa Persei
 * Kappa Phoenicis
 * Kappa Pictoris
 * Kappa Piscium
 * Kappa Pyxidis
 * Kappa Reticuli
 * Kappa Sagittarii
 * Kappa Scorpii
 * Kappa Sculptoris
 * Kappa Serpentis
 * Kappa Tauri
 * Kappa Telescopii
 * Kappa Trianguli Australis
 * Kappa Tucanae
 * Kappa Ursae Majoris
 * Kappa Velorum
 * Kappa Virginis
 * Kappa Volantis
 * Kappa1 Apodis
 * Kappa1 Ceti
 * Kappa1 Coronae Australis
 * Kappa1 Lupi
 * Kappa1 Sagittarii
 * Kappa1 Sculptoris
 * Kappa2 Apodis
 * Kappa2 Ceti
 * Kappa2 Coronae Australis
 * Kappa2 Lupi
 * Kappa2 Sagittarii
 * Kappa2 Sculptoris
 * Kappa–mechanism
 * Kapteyn (crater)
 * Kapteyn Astronomical Institute
 * Kapteyn b
 * Kapteyn c
 * Kapteyn's Star
 * Kapustin Yar
 * Kara crater
 * Karachi Film Society
 * Karakul (Tajikistan)
 * Karamoja (film)
 * Karanapaddhati
 * Kardashev scale
 * Karel Absolon
 * Karel Anděl
 * Karel Bossart
 * Karel Slavíček
 * Karel Thole
 * Karelides
 * Karen Akers
 * Karen Haber
 * Karen Harvey Prize
 * Karen Heywood
 * Karen Jean Meech
 * Karen Masters
 * Karen Nyberg
 * Karen Von Damm
 * Kari (moon)
 * Kari Enqvist
 * Karikkoselkä
 * Karin Bryan
 * Karin Lochte
 * Karin family
 * Karin Öberg
 * Karizma (musician)
 * Karkaṭa
 * Karl Augustesen
 * Karl Christian Bruhns
 * Karl Farkas
 * Karl Friedrich Küstner
 * Karl Glazebrook
 * Karl Gordon Henize
 * Karl Guthe Jansky
 * Karl Heinrich von Nassau-Siegen
 * Karl Kreil
 * Karl L. Littrow
 * Karl Ludwig Harding
 * Karl Ludwig Hencke
 * Karl Müller (astronomer)
 * Karl Ramsayer
 * Karl Schwarzschild
 * Karl Schwarzschild Medal
 * Karl Schwarzschild Observatory
 * Karl Stetter
 * Karl Stumpff
 * Karl Valentin
 * Karl Weyprecht
 * Karl Wilhelm Reinmuth
 * Karl Wilhelm Valentiner
 * Karl-Heinz Rädler
 * Karl-Otto Kiepenheuer
 * Karla (film)
 * Karla Schmidt
 * Karla crater
 * Karlie Noon
 * Karlis Kaufmanis
 * Karlovy lázně
 * Karls kühne Gassenschau
 * Karma yoga
 * Karmasthana (astrology)
 * Karmic astrology
 * Karol J. Bobko
 * Karoo
 * Karoo (crater)
 * Karoonda meteorite
 * Karpinskiy (crater)
 * Karrer (crater)
 * Karsh (crater)
 * Karst
 * Karst Underwater Research
 * Karst fenster
 * Karst lake
 * Karst spring
 * Karta GPS
 * Karthika Deepam
 * Kartik (month)
 * Kartika I
 * Karzok (crater)
 * Kasei Valles
 * Kashinhou
 * Kasimir Graff
 * Kasirga rocket system
 * Kaskade
 * Kasner metric
 * Kaspar Gottfried Schweizer
 * Kaspar Uttenhofer
 * Kastanozem
 * Kat (Gravity Rush)
 * Kat Gunn
 * Katakis
 * Katarche
 * Katarchic astrology
 * Katarmal
 * Katchalsky (crater)
 * Kate Adamala
 * Kate Brooks (astronomer)
 * Kate Isaak
 * Kate Marvel
 * Kate Meyrick
 * Kate Simko
 * Kate Worley
 * Kate, the Cat and the Moon
 * Katey Walter Anthony
 * Kathaleen Land
 * Kathanam
 * Katharina Kepler
 * Katharine Blodgett Gebbie
 * Katharine Giles
 * Katharine Reeves
 * Katherine Calvin
 * Katherine H. Freeman
 * Katherine Johnson
 * Katherine Johnson Independent Verification and Validation Facility
 * Katherine Joy
 * Katherine Richardson Christensen
 * Katherine Ross (scientist)
 * Katherine Weimer
 * Kathleen Ann Campbell
 * Kathleen Bever Blackburn
 * Kathleen Conlan
 * Kathleen Fontaine
 * Kathleen Miller (scientist)
 * Kathleen Ollerenshaw
 * Kathleen Rubins
 * Kathryn C. Thornton
 * Kathryn Cramer
 * Kathryn D. Sullivan
 * Kathryn P. Hire
 * Kathy Griffin
 * Kathy Lueders
 * Kathy Vivas
 * Katian
 * Katie Mack (astrophysicist)
 * Katie Nolan
 * Katrin Linse
 * Katsuhiro Otomo
 * Kattendijk Sands
 * Kattukkaran Varunny Joseph
 * Katuru Narayana
 * Katzman Automatic Imaging Telescope
 * Kauaʻi Educational Association for Science and Astronomy
 * Kautsky effect
 * Kavasji Naegamvala
 * Kaveri Crater
 * Kavian
 * Kavli Institute for Cosmology
 * Kavli Prize
 * Kayla Barron
 * Kayla Iacovino
 * Kayper
 * KazCosmos
 * KazEOSat 2
 * KazSat-1
 * KazSat-2
 * KazSat-3
 * Kazachok
 * Kazakh Steppe
 * Kazakh space program
 * Kazakhstan
 * Kazimieras Černis
 * Kazimierz Czarnecki (engineer)
 * Kazimierz Kordylewski
 * Kazimierz Siemienowicz
 * Kazuo Kubokawa
 * Kazuro Watanabe
 * Kazutaka Miyatake
 * Kazuyoshi Itō
 * Kašku
 * Ke Kā o Makaliʻi
 * Keanu Reeves
 * Kearons (crater)
 * Keats (crater)
 * Keb Darge
 * Kebira Crater
 * Keck Geology Consortium
 * Keck Institute for Space Studies
 * Kedarnath (film)
 * Kedr
 * Keeble Observatory
 * Keeler (Martian crater)
 * Keeler (lunar crater)
 * Keeling Curve
 * Keelut (crater)
 * Keely Smith
 * Keenen Ivory Wayans
 * Keep Talking (Pink Floyd song)
 * Keepin' Halloween Alive
 * Keetch–Byram drought index
 * Kefitzat Haderech
 * Keilir
 * Keith Barber (geographer)
 * Keith Brooke
 * Keith Cowing
 * Keith Critchlow
 * Keith David
 * Keith Henson
 * Keith Lofstrom
 * Keith Mason (scientist)
 * Keith Runcorn Prize
 * Keith Tritton
 * Keith-Albee Theatre
 * Keivan Stassun
 * Kejimkujik National Park
 * Kek (mythology)
 * Kekerengu Fault
 * Kekulé (crater)
 * Keldysh (crater)
 * Keldysh Research Center
 * Keldysh bomber
 * Kelle Cruz
 * Kelli Hand
 * Kelly Falkner
 * Kelly Freas
 * Kelly Jemison
 * Kelly West crater
 * Kelly-Strayhorn Theater
 * Kelsi Singer
 * Kelu-1
 * Kelvin–Helmholtz instability
 * Kelvin–Helmholtz mechanism
 * Kemadruma yoga
 * Kemble's Cascade
 * Kemistry
 * Kemistry & Storm
 * Kemlo
 * Kempe Award for Distinguished Ecologists
 * Ken Baxter (businessman)
 * Ken Bowersox
 * Ken Crawford (astrophotographer)
 * Ken Croswell
 * Ken Freeman (astronomer)
 * Ken Ishii
 * Ken MacLeod
 * Ken Mattingly
 * Ken Park
 * Ken Pounds
 * Ken Slater (science fiction)
 * Kenai Group
 * Kenji Kamiyama
 * Kenji Yamamoto (composer, born 1964)
 * Kenkō (crater)
 * Kenn Thomas
 * Kennedy Space Center
 * Kennedy Space Center Launch Complex 39
 * Kennedy Space Center Launch Complex 39A
 * Kennedy Space Center Launch Complex 39B
 * Kennedy Space Center Launch Complex 48
 * Kennelly–Heaviside layer
 * Kenneth Arnold
 * Kenneth Bulmer
 * Kenneth Cockrel Jr.
 * Kenneth Cockrel Sr.
 * Kenneth Cockrell
 * Kenneth D. Cameron
 * Kenneth Edgeworth
 * Kenneth Franklin
 * Kenneth G. Libbrecht
 * Kenneth G. McCracken
 * Kenneth Greisen
 * Kenneth Ham
 * Kenneth J. Lawrence
 * Kenneth John Frost
 * Kenneth Kellermann
 * Kenneth M. Halanych
 * Kenneth N. Beers
 * Kenneth Nordtvedt
 * Kenneth P. Green
 * Kenneth R. Sembach
 * Kenneth S. Fagg
 * Kenneth S. Kleinknecht
 * Kenneth S. Reightler Jr.
 * Kennicutt–Schmidt law
 * Kennon Observatory
 * Kenny "Dope" Gonzalez
 * Kenny & Company
 * Kenny Hawkes
 * Kent Brewster
 * Kent Cullers
 * Kent Ford (astronomer)
 * Kent Hotel
 * Kent Rominger
 * Kentland crater
 * Kentucky Geological Survey
 * Kentucky Space Grant Consortium
 * Kentucky Theater (Lexington)
 * Kenwood Astrophysical Observatory
 * Kenwood Corporation
 * Kenyte
 * Kenzo Suzuki (astronomer)
 * Kepler (Martian crater)
 * Kepler (lunar crater)
 * Kepler College
 * Kepler Follow-up Program
 * Kepler Input Catalog
 * Kepler Museum
 * Kepler conjecture
 * Kepler de Souza Oliveira
 * Kepler object of interest
 * Kepler orbit
 * Kepler photometer
 * Kepler problem
 * Kepler space telescope
 * Kepler triangle
 * Kepler's Supernova
 * Kepler's equation
 * Kepler's laws of planetary motion
 * Kepler-10
 * Kepler-102
 * Kepler-107
 * Kepler-10b
 * Kepler-10c
 * Kepler-11
 * Kepler-11b
 * Kepler-11c
 * Kepler-11d
 * Kepler-11e
 * Kepler-11f
 * Kepler-11g
 * Kepler-12
 * Kepler-1229
 * Kepler-1229b
 * Kepler-124b
 * Kepler-12b
 * Kepler-13
 * Kepler-138
 * Kepler-14
 * Kepler-14b
 * Kepler-15
 * Kepler-1520
 * Kepler-1520b
 * Kepler-1544 b
 * Kepler-15b
 * Kepler-16
 * Kepler-160
 * Kepler-1606b
 * Kepler-1625
 * Kepler-1625b
 * Kepler-1625b I
 * Kepler-1638b
 * Kepler-1647b
 * Kepler-1649
 * Kepler-1649c
 * Kepler-1652b
 * Kepler-16b
 * Kepler-17
 * Kepler-174d
 * Kepler-17b
 * Kepler-18
 * Kepler-182
 * Kepler-186
 * Kepler-186b
 * Kepler-186e
 * Kepler-186f
 * Kepler-19
 * Kepler-19b
 * Kepler-19c
 * Kepler-20
 * Kepler-20b
 * Kepler-20c
 * Kepler-20d
 * Kepler-20e
 * Kepler-20f
 * Kepler-20g
 * Kepler-22
 * Kepler-223
 * Kepler-22b
 * Kepler-23
 * Kepler-23b
 * Kepler-23c
 * Kepler-24
 * Kepler-24b
 * Kepler-24c
 * Kepler-24d
 * Kepler-24e
 * Kepler-25
 * Kepler-25b
 * Kepler-25c
 * Kepler-26
 * Kepler-26e
 * Kepler-27
 * Kepler-277b
 * Kepler-277c
 * Kepler-28
 * Kepler-283c
 * Kepler-28b
 * Kepler-29
 * Kepler-296
 * Kepler-296e
 * Kepler-296f
 * Kepler-298d
 * Kepler-30
 * Kepler-31
 * Kepler-32
 * Kepler-32b
 * Kepler-32c
 * Kepler-33
 * Kepler-33b
 * Kepler-34
 * Kepler-345b
 * Kepler-34b
 * Kepler-35
 * Kepler-36
 * Kepler-36b
 * Kepler-37
 * Kepler-371
 * Kepler-371b
 * Kepler-371c
 * Kepler-37b
 * Kepler-37c
 * Kepler-37d
 * Kepler-38
 * Kepler-39
 * Kepler-395c
 * Kepler-39b
 * Kepler-4
 * Kepler-40
 * Kepler-40b
 * Kepler-41
 * Kepler-413b
 * Kepler-419
 * Kepler-419b
 * Kepler-419c
 * Kepler-41b
 * Kepler-42
 * Kepler-421
 * Kepler-421b
 * Kepler-42c
 * Kepler-43
 * Kepler-432
 * Kepler-432b
 * Kepler-438
 * Kepler-438b
 * Kepler-44
 * Kepler-440b
 * Kepler-442
 * Kepler-442b
 * Kepler-443b
 * Kepler-444
 * Kepler-445b
 * Kepler-445c
 * Kepler-445d
 * Kepler-447b
 * Kepler-45
 * Kepler-452
 * Kepler-452b
 * Kepler-453b
 * Kepler-46
 * Kepler-47
 * Kepler-47b
 * Kepler-47c
 * Kepler-4b
 * Kepler-5
 * Kepler-51
 * Kepler-56
 * Kepler-56b
 * Kepler-56c
 * Kepler-59b
 * Kepler-5b
 * Kepler-6
 * Kepler-60d
 * Kepler-61
 * Kepler-61b
 * Kepler-62
 * Kepler-62b
 * Kepler-62c
 * Kepler-62d
 * Kepler-62e
 * Kepler-62f
 * Kepler-65
 * Kepler-66
 * Kepler-67
 * Kepler-68
 * Kepler-68b
 * Kepler-68c
 * Kepler-68d
 * Kepler-69
 * Kepler-69b
 * Kepler-69c
 * Kepler-6b
 * Kepler-7
 * Kepler-70
 * Kepler-70b
 * Kepler-70c
 * Kepler-71
 * Kepler-76b
 * Kepler-78
 * Kepler-78b
 * Kepler-7b
 * Kepler-8
 * Kepler-80
 * Kepler-84
 * Kepler-86
 * Kepler-87c
 * Kepler-88
 * Kepler-89
 * Kepler-89e
 * Kepler-8b
 * Kepler-9
 * Kepler-90
 * Kepler-90e
 * Kepler-90f
 * Kepler-90h
 * Kepler-90i
 * Kepler-91b
 * Kepler-9b
 * Kepler-9c
 * Kepler-9d
 * Kepler–Poinsot polyhedron
 * Kepínski (crater)
 * Kerala Soil Museum
 * Kerala school of astronomy and mathematics
 * Keratophyre
 * Keraunography
 * Kerb Crawler
 * Kerbal Space Program
 * Kerbal Space Program 2
 * Kerberos (moon)
 * Kerim Kerimov
 * Kernel-phase
 * Kerouac (crater)
 * Kerr effect
 * Kerr frequency comb
 * Kerr metric
 * Kerr/CFT correspondence
 * Kerri Chandler
 * Kerrie Wilson
 * Kerry Conran
 * Kerry International Dark-Sky Reserve
 * Kerr–Newman metric
 * Kerr–Schild perturbations
 * Kerstin Perez
 * Kertész (crater)
 * Kerwan (crater)
 * Kesen meteorite
 * Kesh temple hymn
 * Kessler syndrome
 * Kesteven 79
 * Kether (video game)
 * Kettle (landform)
 * Kettle logic
 * Ketu (mythology)
 * Keuper marl
 * Keurusselkä
 * Kevin A. Ford
 * Kevin Aviance
 * Kevin Bokeili
 * Kevin D. Randle
 * Kevin Fong
 * Kevin Grazier
 * Kevin Hand
 * Kevin K. Lehmann
 * Kevin L.G. Parkin
 * Kevin Long (artist)
 * Kevin Luhman
 * Kevin P. Chilton
 * Kevin R. Kregel
 * Kevin Saunderson
 * Kevin Schawinski
 * Kevin Siembieda
 * Kevin Smith
 * Kevin Smith (editor)
 * Kevola Observatory
 * Keweenawite
 * Kewpie Chasma
 * Keyhole problem
 * Keystone (limestone)
 * Kgagodi crater
 * Khabibullo Abdussamatov
 * Khagol Mandal
 * Khagol Vishwa
 * KhalifaSat
 * Khana (poet)
 * Khandakhadyaka
 * Khansa (crater)
 * Kharkiv Observatory
 * Khartron
 * Khatt Atui
 * Khensu (crater)
 * Khepri
 * Khes
 * Kholod
 * Khonsu
 * Khosr River
 * Khunjerab Pass
 * Khusrau (crater)
 * Khvol'son (crater)
 * Khālid ibn ʿAbd al‐Malik al‐Marwarrūdhī
 * Kibal'chich (crater)
 * Kibble–Zurek mechanism
 * Kibō (ISS module)
 * KickSat
 * Kid Crème
 * Kid Krrish
 * Kid vs. Kat
 * Kidili
 * Kidinnu (crater)
 * Kids (film)
 * Kielder Forest Star Camp
 * Kielder Observatory
 * Kiepenheuer Institute for Solar Physics
 * Kies (crater)
 * Kieselkalk
 * Kiess (crater)
 * Kiichirō Furukawa
 * Kika Silva Pla Planetarium
 * Kikuchi lines (physics)
 * Kileken
 * Kill (body of water)
 * Kill the Moon
 * Kill vehicle
 * Killarney Provincial Park Observatory
 * Killer Camp
 * Killer Is Dead
 * Killer Kane
 * Killer Klowns from Outer Space
 * Killer Nun
 * Killer's Moon
 * Killing Ground (novel)
 * Killing horizon
 * Killing spinor
 * Killjoy (2000 film)
 * Killjoy 3
 * Killjoy Goes to Hell
 * Killjoys
 * Killzone
 * Killzone (video game)
 * Killzone 2
 * Killzone 3
 * Killzone Shadow Fall
 * Killzone: Liberation
 * Killzone: Mercenary
 * Kilodegree Extremely Little Telescope
 * Kilometre per square kilometre
 * Kilonova
 * Kilopower
 * Kim 2
 * Kim Am
 * Kim Aviance
 * Kim Crosbie
 * Kim Dam
 * Kim Mohan
 * Kim Ung-yong
 * Kim Venn
 * Kim Weaver
 * Kimbal Musk
 * Kimberley (Western Australia)
 * Kimberly A. Novick
 * Kimberly Arcand
 * Kimberly Hart
 * Kimberly Prather
 * Kimbolton Fireworks
 * Kimmo Innanen
 * Kimura (crater)
 * Kin Endate
 * Kinau (crater)
 * Kindling (sedative–hypnotic withdrawal)
 * Kinect Star Wars
 * Kineococcus radiotolerans
 * Kinepolis
 * KinetX
 * Kinetic PreProcessor
 * Kinetic Void
 * Kinetic bombardment
 * Kinetic inductance detector
 * Kinetic theory of gases
 * Kinetix
 * King (crater)
 * King Arthur's messianic return
 * King Cole Bar
 * King David's Spaceship
 * King Dedede
 * King Dinosaur
 * King Edward VII, Stratford
 * King Grayskull
 * King Hiss
 * King Matjaž
 * King Randor
 * King Star King
 * King asleep in mountain
 * King tide
 * King's Arms, Waterloo
 * King's Bastion
 * King's Head, Bexley
 * King's Head, Roehampton
 * King's Head, Tooting
 * King's Observatory
 * Kingdom Come (comics)
 * Kingdom Hearts 358/2 Days
 * Kingdom Hearts 3D: Dream Drop Distance
 * Kingman Museum
 * Kingmere
 * Kings Arms, Hanwell
 * Kings Arms, Leaves Green
 * Kings Hotel, Sydney CBD
 * Kings Theatre (Brooklyn)
 * Kings Watch
 * Kings of Rhythm
 * Kings of Speed
 * Kingseat Hospital (New Zealand)
 * Kingsley Amis
 * Kinich Ahau
 * Kinji Fukasaku
 * Kink instability
 * Kinkora (crater)
 * Kinnordy House
 * Kino (movement)
 * Kintu
 * Kinvig
 * Kip Thorne
 * Kipini (crater)
 * Kipling (crater)
 * Kirby (character)
 * Kirby (crater)
 * Kirby (series)
 * Kirby 64: The Crystal Shards
 * Kirby Air Ride
 * Kirby Battle Royale
 * Kirby Fighters 2
 * Kirby McCauley
 * Kirby Star Allies
 * Kirby Super Star
 * Kirby Tilt 'n' Tumble
 * Kirby's Avalanche
 * Kirby's Block Ball
 * Kirby's Dream Collection
 * Kirby's Dream Course
 * Kirby's Dream Land 3
 * Kirby's Pinball Land
 * Kirby's Star Stacker
 * Kirby: Right Back at Ya!
 * Kirch (crater)
 * Kircher (crater)
 * Kirchhoff (crater)
 * Kirchhoff integral theorem
 * Kirchhoff's diffraction formula
 * Kirill Florensky
 * Kirk (crater)
 * Kirk Bryan Award
 * Kirkdale Cave
 * Kirkdale sundial
 * Kirklington Hall Research Station
 * Kirkwood (crater)
 * Kirkwood Observatory
 * Kirkwood gap
 * Kirlian photography
 * Kirobo
 * Kirsan Ilyumzhinov
 * Kirsteen Tinto
 * Kirsten Banks
 * Kirsten Kraiberg Knudsen
 * Kirsty McCabe
 * Kiruna Station
 * Kiso Observatory
 * Kiss & Tell (Angels & Airwaves song)
 * Kiss György Observatory
 * Kiss nightclub fire
 * Kistler K-1
 * KitKatClub
 * Kitab al-Anwa'
 * Kitaguni
 * Kitakami Michinoku Traditional Dance Festival
 * Kitami Observatory
 * Kite experiment
 * Kitsat-1
 * Kitsat-2
 * Kitsat-3
 * Kitt Peak National Observatory
 * Kitti's hog-nosed bat
 * Kittu (crater)
 * Kitty Burke
 * Kitty Kornered
 * Kitty O'Brien Joyner
 * Kiviuq (moon)
 * Kivu Lacus
 * KiwiSAT
 * KjPn 8
 * Kjell N. Lindgren
 * Kjellberg Finsterwalde
 * Klaatu barada nikto
 * Klaproth (crater)
 * Klaus Keil
 * Klaus Oeggl
 * Klaus Riedel
 * Klaus von Storch
 * Klaus-Dietrich Flade
 * Klavdiâ Barkhatova
 * Klein (crater)
 * Kleine–Levin syndrome
 * Kleinmann–Low Nebula
 * Klemperer rosette
 * Kleo the Misfit Unicorn
 * Klevtsov–Cassegrain telescope
 * Kleymenov (crater)
 * Kleť Observatory
 * Klim Churyumov
 * Klimisch score
 * Klingon Language Institute
 * Klingon for the Galactic Traveler
 * Klingon grammar
 * Klingon language
 * Klingon scripts
 * Klingon starships
 * Kliper
 * Klippe
 * Klonoa: Door to Phantomile
 * Klumpke-Roberts Award
 * Klute (crater)
 * Klydonograph
 * Knave of Clubs
 * Knickpoint
 * Knight shift
 * Knights of Cydonia
 * Knights of Ålleberg
 * Knitting Factory
 * Knivskjellodden
 * Knobel (crater)
 * Knocking on Heaven's Door (book)
 * Knott's Bear-y Tales
 * Knott's Scary Farm
 * Knowhere
 * Knowing (film)
 * Known Space
 * Knox-Shaw (crater)
 * Knud Jessen
 * Knudsen gas
 * Knut Fægri
 * Knut Jørgen Røed Ødegaard
 * Knut Lundmark
 * Kobayashi Maru
 * Kobie Boykins
 * Kobra Khan (character)
 * Koch (crater)
 * Kocher (crater)
 * Kodaikanal Solar Observatory
 * Kodiak–Bowie Seamount chain
 * Koelbjerg Man
 * Koenigsberg Observatory
 * Koepcke's screech owl
 * Koffiefontein mine
 * Koga (crater)
 * Kohlschütter (crater)
 * Koi Pond (The Office)
 * Koi... Mil Gaya
 * Koiak
 * Koichi Wakata
 * Koitere Lacus
 * Kokey (film)
 * Kokino
 * Kokopelli
 * Kola Alkaline Province
 * Kola Superdeep Borehole
 * Kolhörster (crater)
 * Kolk (vortex)
 * Kolob
 * Kolya (crater)
 * Kom(m)ödchen
 * Komabayashi-Ingersoll limit
 * Komar mass
 * Komar superpotential
 * Komarov (crater)
 * Komatiite
 * Kombucha
 * Kommil Foo
 * Kompass Klub
 * Kompozit
 * Konark Sun Temple
 * Kondratyuk (crater)
 * Kongsberg Maritime
 * Kongsberg Satellite Services
 * Kongsberg Spacetec
 * Kongsfjord Telemetry Station
 * Konishi anomaly
 * Konkoly Observatory
 * Konoplev (crater)
 * Konrad Dannenberg
 * Konrad Johannes Karl Büttner
 * Konrad Rudnicki
 * Konstantin Batygin
 * Konstantin Feoktistov
 * Konstantin Kozeyev
 * Konstantin Makarevich
 * Konstantin Tsiolkovsky
 * Konstantin Valkov
 * Konstantinov (crater)
 * Konstanty Zakrzewski
 * Koo Jun-yup
 * Koog
 * Kookaburra (rocket)
 * Koonibba Test Range
 * Kopernik Observatory & Science Center
 * Kopff (crater)
 * Koposov I
 * Koposov II
 * Korabl-Sputnik 1
 * Korabl-Sputnik 2
 * Korabl-Sputnik 3
 * Korabl-Sputnik 4
 * Korabl-Sputnik 5
 * Korado Korlević
 * Kordylewski cloud
 * Kore (moon)
 * Korea Advanced Institute of Science and Technology Satellite 4
 * Korea Aerospace Research Institute
 * Korea Astronomy and Space Science Institute
 * Korea Invisible Mass Search
 * Korea Pathfinder Lunar Orbiter
 * Korean Astronaut Program
 * Korean Astronomical Society
 * Korean Committee of Space Technology
 * Korean VLBI Network
 * Korean creation narratives
 * Koreasat
 * Koreasat 1
 * Koreasat 5
 * Koreasat 5A
 * Koreasat 6
 * Koreasat 7
 * Korn's Groovy Pirate Ghost Mystery
 * Korolev (Martian crater)
 * Korolev (lunar crater)
 * Koronas-Foton
 * Koronis Rift
 * Koronis family
 * Korra
 * Koruza (technology)
 * Kos (unit)
 * Kosberg (crater)
 * Koshoba (crater)
 * Kosmopoisk
 * Kosmos (rocket family)
 * Kosmos (satellite)
 * Kosmos 1
 * Kosmos 10
 * Kosmos 1001
 * Kosmos 101
 * Kosmos 1024
 * Kosmos 1030
 * Kosmos 104
 * Kosmos 105
 * Kosmos 106
 * Kosmos 107
 * Kosmos 1074
 * Kosmos 108
 * Kosmos 11
 * Kosmos 110
 * Kosmos 1109
 * Kosmos 111
 * Kosmos 112
 * Kosmos 1124
 * Kosmos 1129
 * Kosmos 115
 * Kosmos 116
 * Kosmos 1164
 * Kosmos 117
 * Kosmos 1171
 * Kosmos 1172
 * Kosmos 1188
 * Kosmos 119
 * Kosmos 1191
 * Kosmos 12
 * Kosmos 120
 * Kosmos 1217
 * Kosmos 122
 * Kosmos 1223
 * Kosmos 123
 * Kosmos 124
 * Kosmos 1241
 * Kosmos 1247
 * Kosmos 1261
 * Kosmos 1267
 * Kosmos 1278
 * Kosmos 1285
 * Kosmos 129
 * Kosmos 13
 * Kosmos 1300
 * Kosmos 1317
 * Kosmos 132
 * Kosmos 133
 * Kosmos 1341
 * Kosmos 1348
 * Kosmos 135
 * Kosmos 136
 * Kosmos 1367
 * Kosmos 137
 * Kosmos 1375
 * Kosmos 1379
 * Kosmos 138
 * Kosmos 1382
 * Kosmos 14
 * Kosmos 140
 * Kosmos 1402
 * Kosmos 1409
 * Kosmos 142
 * Kosmos 143
 * Kosmos 144
 * Kosmos 145
 * Kosmos 1456
 * Kosmos 146
 * Kosmos 147
 * Kosmos 148
 * Kosmos 1481
 * Kosmos 1484
 * Kosmos 149
 * Kosmos 15
 * Kosmos 1514
 * Kosmos 1518
 * Kosmos 152
 * Kosmos 154
 * Kosmos 1541
 * Kosmos 1546
 * Kosmos 1547
 * Kosmos 1569
 * Kosmos 1581
 * Kosmos 1586
 * Kosmos 1596
 * Kosmos 16
 * Kosmos 1604
 * Kosmos 1629
 * Kosmos 163
 * Kosmos 165
 * Kosmos 1658
 * Kosmos 166
 * Kosmos 1661
 * Kosmos 1667
 * Kosmos 1669
 * Kosmos 167
 * Kosmos 1675
 * Kosmos 1684
 * Kosmos 1686
 * Kosmos 1687
 * Kosmos 1698
 * Kosmos 17
 * Kosmos 1701
 * Kosmos 1729
 * Kosmos 173
 * Kosmos 176
 * Kosmos 1761
 * Kosmos 1774
 * Kosmos 1783
 * Kosmos 1785
 * Kosmos 1792
 * Kosmos 1793
 * Kosmos 18
 * Kosmos 1805
 * Kosmos 1806
 * Kosmos 1818
 * Kosmos 1849
 * Kosmos 1851
 * Kosmos 186 and Kosmos 188
 * Kosmos 1867
 * Kosmos 1887
 * Kosmos 1894
 * Kosmos 19
 * Kosmos 1903
 * Kosmos 191
 * Kosmos 1922
 * Kosmos 196
 * Kosmos 1966
 * Kosmos 197
 * Kosmos 1974
 * Kosmos 1977
 * Kosmos 2
 * Kosmos 20
 * Kosmos 2001
 * Kosmos 202
 * Kosmos 204
 * Kosmos 2044
 * Kosmos 2050
 * Kosmos 2063
 * Kosmos 2076
 * Kosmos 2084
 * Kosmos 2087
 * Kosmos 2097
 * Kosmos 21
 * Kosmos 2105
 * Kosmos 211
 * Kosmos 212
 * Kosmos 213
 * Kosmos 2133
 * Kosmos 214
 * Kosmos 215
 * Kosmos 2155
 * Kosmos 2175
 * Kosmos 2176
 * Kosmos 219
 * Kosmos 2196
 * Kosmos 2209
 * Kosmos 221
 * Kosmos 2217
 * Kosmos 222
 * Kosmos 2221
 * Kosmos 2222
 * Kosmos 2224
 * Kosmos 2229
 * Kosmos 2232
 * Kosmos 2241
 * Kosmos 225
 * Kosmos 2251
 * Kosmos 2261
 * Kosmos 2282
 * Kosmos 2286
 * Kosmos 23
 * Kosmos 230
 * Kosmos 2312
 * Kosmos 233
 * Kosmos 2340
 * Kosmos 2342
 * Kosmos 2345
 * Kosmos 2350
 * Kosmos 2351
 * Kosmos 2368
 * Kosmos 2379
 * Kosmos 238
 * Kosmos 2380
 * Kosmos 2381
 * Kosmos 2382
 * Kosmos 2388
 * Kosmos 2393
 * Kosmos 2394
 * Kosmos 2395
 * Kosmos 2396
 * Kosmos 2397
 * Kosmos 24
 * Kosmos 2402
 * Kosmos 2403
 * Kosmos 2404
 * Kosmos 2411
 * Kosmos 2412
 * Kosmos 2413
 * Kosmos 2417
 * Kosmos 2418
 * Kosmos 2419
 * Kosmos 242
 * Kosmos 2421
 * Kosmos 2422
 * Kosmos 2424
 * Kosmos 2425
 * Kosmos 2426
 * Kosmos 2430
 * Kosmos 2431
 * Kosmos 2432
 * Kosmos 2433
 * Kosmos 2434
 * Kosmos 2435
 * Kosmos 2436
 * Kosmos 2440
 * Kosmos 2441
 * Kosmos 2442
 * Kosmos 2443
 * Kosmos 2444
 * Kosmos 2445
 * Kosmos 2446
 * Kosmos 2447
 * Kosmos 2448
 * Kosmos 2449
 * Kosmos 245
 * Kosmos 2452
 * Kosmos 2456
 * Kosmos 2457
 * Kosmos 2458
 * Kosmos 2459
 * Kosmos 2460
 * Kosmos 2461
 * Kosmos 2464
 * Kosmos 2465
 * Kosmos 2466
 * Kosmos 2467
 * Kosmos 2468
 * Kosmos 2469
 * Kosmos 2470
 * Kosmos 2471
 * Kosmos 2472
 * Kosmos 2473
 * Kosmos 2474
 * Kosmos 2475
 * Kosmos 2476
 * Kosmos 2477
 * Kosmos 2478
 * Kosmos 2479
 * Kosmos 2480
 * Kosmos 2481
 * Kosmos 2482
 * Kosmos 2483
 * Kosmos 2484
 * Kosmos 2485
 * Kosmos 2494
 * Kosmos 2499
 * Kosmos 25
 * Kosmos 2500
 * Kosmos 2501
 * Kosmos 2514
 * Kosmos 2516
 * Kosmos 2522
 * Kosmos 2527
 * Kosmos 2529
 * Kosmos 257
 * Kosmos 259
 * Kosmos 26
 * Kosmos 261
 * Kosmos 262
 * Kosmos 265
 * Kosmos 268
 * Kosmos 27
 * Kosmos 275
 * Kosmos 277
 * Kosmos 28
 * Kosmos 283
 * Kosmos 285
 * Kosmos 29
 * Kosmos 291
 * Kosmos 295
 * Kosmos 3
 * Kosmos 300
 * Kosmos 303
 * Kosmos 305
 * Kosmos 307
 * Kosmos 308
 * Kosmos 31
 * Kosmos 311
 * Kosmos 314
 * Kosmos 319
 * Kosmos 32
 * Kosmos 320
 * Kosmos 321
 * Kosmos 324
 * Kosmos 327
 * Kosmos 33
 * Kosmos 334
 * Kosmos 335
 * Kosmos 347
 * Kosmos 348
 * Kosmos 35
 * Kosmos 351
 * Kosmos 356
 * Kosmos 357
 * Kosmos 36
 * Kosmos 362
 * Kosmos 369
 * Kosmos 37
 * Kosmos 378
 * Kosmos 379
 * Kosmos 380
 * Kosmos 381
 * Kosmos 382
 * Kosmos 388
 * Kosmos 391
 * Kosmos 393
 * Kosmos 394
 * Kosmos 396
 * Kosmos 398
 * Kosmos 4
 * Kosmos 400
 * Kosmos 408
 * Kosmos 419
 * Kosmos 421
 * Kosmos 423
 * Kosmos 426
 * Kosmos 434
 * Kosmos 435
 * Kosmos 440
 * Kosmos 453
 * Kosmos 455
 * Kosmos 458
 * Kosmos 459
 * Kosmos 46
 * Kosmos 461
 * Kosmos 467
 * Kosmos 47
 * Kosmos 472
 * Kosmos 48
 * Kosmos 481
 * Kosmos 482
 * Kosmos 485
 * Kosmos 487
 * Kosmos 49
 * Kosmos 496
 * Kosmos 497
 * Kosmos 498
 * Kosmos 5
 * Kosmos 50
 * Kosmos 501
 * Kosmos 51
 * Kosmos 52
 * Kosmos 520
 * Kosmos 521
 * Kosmos 523
 * Kosmos 524
 * Kosmos 526
 * Kosmos 53
 * Kosmos 545
 * Kosmos 553
 * Kosmos 557
 * Kosmos 558
 * Kosmos 562
 * Kosmos 57
 * Kosmos 573
 * Kosmos 580
 * Kosmos 6
 * Kosmos 60
 * Kosmos 601
 * Kosmos 605
 * Kosmos 606
 * Kosmos 608
 * Kosmos 611
 * Kosmos 613
 * Kosmos 615
 * Kosmos 633
 * Kosmos 634
 * Kosmos 638
 * Kosmos 64
 * Kosmos 656
 * Kosmos 66
 * Kosmos 662
 * Kosmos 665
 * Kosmos 668
 * Kosmos 670
 * Kosmos 672
 * Kosmos 68
 * Kosmos 686
 * Kosmos 690
 * Kosmos 695
 * Kosmos 7
 * Kosmos 70
 * Kosmos 703
 * Kosmos 705
 * Kosmos 706
 * Kosmos 725
 * Kosmos 745
 * Kosmos 750
 * Kosmos 76
 * Kosmos 772
 * Kosmos 775
 * Kosmos 78
 * Kosmos 782
 * Kosmos 8
 * Kosmos 801
 * Kosmos 803
 * Kosmos 818
 * Kosmos 839
 * Kosmos 849
 * Kosmos 850
 * Kosmos 862
 * Kosmos 869
 * Kosmos 880