Related by context. Frequent words. (Click for all words.) 65 Andromeda Galaxy 63 nebula 63 globular cluster 61 Milky Way Galaxy 61 Betelgeuse 60 spiral galaxy 60 Scorpius 59 Milky Way 59 galaxy cluster 59 Orion Nebula 58 distant galaxy 58 supernova remnant 58 unaided eye 58 Deneb 58 planet orbiting 58 X ray emission 57 Milky Way galaxy 57 nebulae 57 Large Magellanic Cloud 57 Cassiopeia 57 dwarf galaxy 56 HD #b [002] 56 Eta Carinae 56 planets orbiting 56 extrasolar planet 56 extrasolar planets 56 ecliptic 56 Jupiter moons 55 brown dwarf 55 galaxy 55 quasar 55 Pleiades 54 COROT 54 Arcturus 53 quasars 53 gamma ray burst 53 exoplanets 53 GRBs 53 magnetar 53 distant galaxies 53 celestial objects 53 constellation 53 ringed planet 52 supernova explosion 52 Spica 52 constellations 52 XMM Newton 52 aurora 52 astronomical objects 52 globular clusters 52 spiral galaxies 52 planets 52 Aldebaran 52 super Earths 52 supermoon 52 fainter 51 elliptical galaxies 51 Sedna 51 galaxies 51 ellipse 50 redshift 50 rocky planets 50 brown dwarfs 50 comet 50 infrared wavelengths 50 Geminids 50 THEMIS 50 Gliese 50 supernova 50 orbits 50 Saturn rings 49 ESO Very Large Telescope 49 Alpha Centauri 49 astronomers 49 starlight 49 rock outcrop 49 neutron star 49 supermassive black hole 49 gamma ray bursts 49 Perseid meteor shower 49 meteor shower 49 occultation 48 celestial 48 Leonids 48 Big Dipper 48 Perseids 48 supernova explosions 48 Victoria Crater 48 Spitzer Space Telescope 48 sunspot 48 supernovas 48 optical telescope 48 orbiting 48 rover Opportunity 48 Uranus 48 Ursa Major 48 comet nucleus 48 Enceladus 48 Earth asteroids 47 exoplanet 47 aurora borealis