Related by context. Frequent words. (Click for all words.) 67 HD #b [002] 66 Andromeda galaxy 64 Andromeda Galaxy 62 Milky Way Galaxy 61 galaxy cluster 61 distant galaxy 60 planet orbiting 59 Alpha Centauri 58 Gliese 58 spiral galaxy 57 Large Magellanic Cloud 57 planets orbiting 57 brown dwarf 56 Eta Carinae 56 perigee 56 celestial object 56 constellation Leo 56 supernova remnant 56 orbits 56 magnetar 55 Milky Way galaxy 55 rocky planets 55 redshift 54 comet nucleus 54 super Earths 54 Betelgeuse 54 globular cluster 54 unaided eye 53 ecliptic 53 quasar 53 habitable planets 53 Orion Nebula 53 brown dwarfs 53 extrasolar planet 53 infrared wavelengths 53 orbiting 53 Sedna 53 ringed planet 53 dwarf galaxy 52 Saturn moons 52 exoplanets 52 planets 52 habitable zone 52 elliptical galaxies 52 galaxy 52 habitable planet 52 gamma ray burst 52 Milky Way 52 fainter 52 nebula 52 neutron star 52 Jupiter Saturn Uranus 52 GeV 52 distant galaxies 51 Uranus 51 heliosphere 51 Mimas 51 supermassive black hole 51 globular clusters 51 exoplanet 51 XMM Newton 51 Enceladus 51 spiral galaxies 51 Lutetia 50 Iapetus 50 X ray emission 50 celestial bodies 50 Solar System 50 quasars 50 COROT 50 astronomical objects 50 galaxies 50 comet 50 supernova explosion 50 galaxy clusters 50 suns 50 orbiting telescope 50 asteroid belt 50 extrasolar planets 49 optical telescopes 49 Kuiper Belt 49 Earth magnetosphere 49 equator 49 WM Keck Observatory 49 terrestrial planets 49 hot Jupiters 49 elliptical orbit 49 umbra 49 GRBs 49 dwarf galaxies 49 supernova 48 optical telescope 48 pulsar 48 muon 48 outer planets 48 corona 48 Comet Tempel 1 48 ejecta 48 celestial objects 48 Saturn rings 48 gravitational tug