Related by context. Frequent words. (Click for all words.) 75 ecliptic 68 constellation Leo 65 equator 64 equinox 62 equinoxes 62 autumnal equinox 61 vernal equinox 59 Pleiades 59 perigee 58 umbra 58 spring equinox 57 HD #b [002] 56 circular orbit 56 Betelgeuse 56 orbits 56 infrared wavelengths 56 Milky Way Galaxy 56 Ophiuchus 56 occultation 55 Geminids 55 elliptical orbit 55 Saturn moon Enceladus 55 moonrise 55 ringed planet 54 Uranus 54 winter solstice 54 Sedna 54 Perseid meteor shower 54 Andromeda galaxy 53 celestial object 53 summer solstice 53 Deneb 53 ellipse 53 supermoon 53 Perseids 53 Scorpius 53 Andromeda Galaxy 53 constellations 52 COROT 52 heliosphere 52 west longitude 52 anticyclone 52 sunspot 52 X ray emission 51 meridian 51 spiral galaxy 51 southeasterly 51 aurora 51 partial lunar eclipse 51 partial eclipse 51 crescent moon 51 Earth magnetosphere 51 Lunar Eclipse 50 NASA Aqua 50 galaxy cluster 50 Leonids 50 Halley Comet 50 equatorial 50 Spica 50 redshift 50 Orion Nebula 50 latitudes 50 distant galaxy 50 Saturn rings 50 GeV 50 supernova remnant 50 auroral 50 nebula 49 extrasolar planet 49 solstice 49 substorms 49 Milky Way 49 mid latitudes 49 northeasterly 49 Enceladus 49 northeasterly direction 49 meteor shower 49 sun 49 unaided eye 49 Eta Carinae 49 geomagnetic field 49 auroras 49 Iapetus 49 Today Mostly sunny 49 northwestward 48 Milky Way galaxy 48 comet 48 troposphere 48 planets 48 Arcturus 48 celestial bodies 48 equatorial Pacific 48 Jupiter moons 47 equatorial regions 47 northern latitudes 47 constellation 47 NASA Cassini spacecraft 47 sunspot activity 47 Cassini spacecraft 47 extrasolar planets 47 Winter Solstice