Related by context. Frequent words. (Click for all words.) 48 Deneb 48 Cassiopeia 47 brown dwarf 46 Spica 46 planet orbiting 45 Sedna 45 HD #b [002] 44 Eta Carinae 44 planets orbiting 43 Ophiuchus 43 nebula 42 extrasolar planet 42 Big Dipper 42 dwarf galaxy 42 Orion Nebula 41 supernova remnant 41 Pleiades 41 Scorpius 41 Large Magellanic Cloud 41 Milky Way 41 Betelgeuse 41 Regulus 40 spiral galaxy 40 Milky Way Galaxy 40 Gliese 40 Phobos 39 Arcturus 39 galaxy cluster 39 spiral galaxies 38 occultation 38 globular clusters 38 unaided eye 38 Aldebaran 38 Andromeda 38 Pollux 37 Alpha Centauri 37 extrasolar planets 37 pulsar 37 Uranus 37 constellation 37 terrestrial planets 37 planets 36 Milky Way galaxy 36 Deimos 36 perigee 36 Charon 36 XMM Newton 35 Rahu 35 distant galaxy 35 circular orbit 35 suns 35 fainter 34 sunspot 34 supernova 34 Io 33 galaxy 33 Jupiter 33 nebulae 33 quasar 33 reflector 33 ellipse 33 interferometer 33 X ray emission 33 supernova explosion 33 Procyon 32 ESO Very Large Telescope 32 Ursa Major 32 gamma ray burst 32 Cygnus 32 constellations 32 quasars 31 Antares 31 Leonids 31 infrared wavelengths 31 Libra 30 redshift 30 orb 30 Ganymede 30 SDSS 30 supernovae 30 celestial objects 30 bluish 30 supernova explosions 30 Nebula 30 Gemini 30 Neptune 29 interferometry 29 Saturn 29 Vesta 29 Chronos 29 Stargazer 28 Quasar 28 orbit 28 aurora 28 Venus 28 equinox 28 Pisces 28 zodiac signs 27 equator 27 Titan 27 galactic