User:DraculavanHelsing/Books/History of Astronomy2 D-G

D-G

 * De revolutionibus orbium coelestium
 * Declination
 * Deferent and epicycle
 * Definition of planet
 * Dialogue Concerning the Two Chief World Systems
 * Dwarf planet
 * Dynamics of the celestial spheres
 * Eccentricity (mathematics)
 * Ecliptic
 * Edmond Halley
 * Edwin Hubble
 * Egyptian astronomy
 * Elongation (astronomy)
 * Empyrean
 * Equant
 * Equatorial coordinate system
 * Equinox
 * Firmament
 * Fixed stars
 * Flat Earth
 * Foucault pendulum
 * Fred Hoyle
 * Galactocentrism
 * Galileo affair
 * Galileo Galilei
 * Geocentric model
 * Gerolamo Cardano
 * Giordano Bruno
 * Giovanni Schiaparelli
 * Gravity
 * Great conjunction
 * Great Debate (astronomy)
 * Great Rift (astronomy)
 * Gustav Kirchhoff