Portal:Spaceflight/On This Day/27 April


 * 1958 - A Sputnik fails to launch an unknown satellite.
 * 1961 - A Juno II launches the Explorer 11 spacecraft.
 * 1964 - A Thor-Agena launches a CORONA satellite.
 * 1967 - A Vostok-2M launches the Kosmos 156 satellite.
 * 1977 - A Kosmos-3M launches the Kosmos 906 satellite.
 * 1979 - A Soyuz-U launches the Kosmos 1097 satellite.
 * 1980 - A Soyuz-U launches the Progress 9 spacecraft to resupply Salyut 6.
 * 1987 - A Tsyklon-3 launches the Kosmos 1842 satellite.
 * 1988 - A Soyuz-U launches the Kosmos 1941 satellite.
 * 1993 - A Soyuz-U launches the Kosmos 2243 satellite.
 * 1999 - An Athena-2 fails to launch the Ikonos-1 satellite.
 * 2008 - The Mobile Service Structure at Cape Canaveral LC-40 is demolished.
 * 2010 - A Kosmos-3M launches the Kosmos-2463 satellite.
 * 2011 - A Soyuz-U launches the Progress M-10M spacecraft to resupply the ISS.