Related by context. Frequent words. (Click for all words.) 62 Cancri 62 constellation Orion 61 constellation Leo 61 planetary nebula 60 Crab Nebula 59 Andromeda Galaxy 58 planetary nebulae 58 globular cluster 57 nebulae 57 Pleiades 57 Andromeda galaxy 56 constellation 56 Betelgeuse 56 Eta Carinae 56 spiral galaxy 56 planet orbits 56 celestial object 56 ecliptic 56 constellation Perseus 55 nebula 55 Scorpius 55 Orion Nebula 54 distant galaxy 54 GRB # 54 Gamma ray bursts 54 X ray emission 54 Milky Way Galaxy 53 Milky Way 53 Cassiopeia 53 unaided eye 52 HD #b [002] 52 Fomalhaut 52 globular clusters 52 Procyon 51 galaxy cluster 51 Sedna 51 planet orbiting 51 spiral galaxies 51 Large Magellanic Cloud 51 accretion disk 51 XMM Newton 51 Galaxy Evolution 50 Mimas 50 galaxy 50 Comet McNaught 50 Phaethon 50 dwarf galaxy 50 Suzaku 50 gamma ray burst 50 planets orbiting 50 Sagittarius 50 Geminids 50 COROT 49 Leonids 49 magnetar 49 supernova explosion 49 Nebula 49 Pulsars 49 Arcturus 49 starbursts 49 supernova remnant 49 supernova remnants 49 auroral 49 Halley comet 49 celestial objects 49 Jupiter Saturn 48 quasar 48 ionized gas 48 brown dwarf 48 supergiant 48 GRBs 48 supermassive black hole 48 Kuiper belt 48 brown dwarfs 48 meteor showers 48 elliptical galaxies 48 microlensing 47 astronomical objects 47 Algol 47 Perseid meteor shower 47 Hubble observations 47 Venusian 47 perigee 47 constellations 47 visible wavelengths 47 ESO Very Large Telescope 47 supernova explosions 47 occultation 47 VLBA 47 galaxies 46 extrasolar planet 46 Milky Way galaxy 46 comet 46 Andromeda 46 Perseids 46 ringed planet 46 orbiting 46 Type Ia supernovae 46 GeV 46 hot Jupiters 46 cigar shaped