Glossary of Astronomical Terms
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[edit] A - M
aberration absolute magnitude absolute zero albedo Alpha Centauri altitude Andromeda Galaxy annular eclipse apex aphelion apogee apparent magnitude asterism asteroid asteroid belt astrobiology astrolabe astrometeorology astronomer astronomical unit astronomy astrophotography astrophysics atmosphere axis azimuth big bang model Big Dipper binary star biosphere black hole blue moon brown dwarf Callisto canals celestial equator celestial pole celestial sphere Ceres chaos Charon collision constellation Copernican system corona crater crescent moon dark matter declination Deimos Dog Star Doppler shift dust dwarf Earth eclipse ecliptic electromagnetic spectrum elliptical galaxy equinox Europa extragalactic first point of Aries force field full moon galaxy Galilean satellites Ganymede gas giant Geiger counter geocentric Halley's Comet heliocentric horizon Io ionosphere Jupiter Kepler's laws light speed light year Local Group local supercluster luminosity lunar lunar eclipse main sequence major planets Mars Martian versus martian mass-luminosity law Mercury minor planet moon motion
[edit] N - Z
nadir Neptune orbit order of magnitude parsec perigee perihelion Phobos Pluto precession quarter moon ray red dwarf red shift right ascension Saber's Beads Saturn Schwarzschild radius SI Sirius solar eclipse solstice spiral galaxy stargazing steady state model supercluster trinary star umbra Uranus Venus visible spectrum waning moon waxing moon white hole zenith
