Related by context. Frequent words. (Click for all words.) 66 Fomalhaut 64 galaxy cluster 64 spiral galaxy 64 HD #b [002] 63 Andromeda galaxy 62 distant galaxy 61 Andromeda Galaxy 60 supernova remnant 60 globular cluster 60 Crab Nebula 59 Gliese 59 magnetar 59 Orion Nebula 59 planet orbiting 59 planets orbiting 59 nebula 59 Eta Carinae 58 galaxy 58 Milky Way Galaxy 58 Milky Way galaxy 57 Large Magellanic Cloud 57 quasar 57 orbits 56 brown dwarf 56 constellation Leo 56 unaided eye 55 gamma ray burst 55 dwarf galaxy 55 celestial object 55 extrasolar planet 54 Sedna 54 Betelgeuse 54 Milky Way 54 supernova 54 Gliese #g 54 orbiting 54 constellation Perseus 53 astronomical objects 53 supernova explosion 53 quasars 53 nebulae 52 Alpha Centauri 52 ringed planet 52 GeV 52 neutron star 52 spiral galaxies 52 rocky planets 51 redshift 51 elliptical orbit 51 planets 51 Cassiopeia 51 suns 51 Kuiper belt 51 Spitzer Space Telescope 51 brown dwarfs 51 exoplanets 51 fainter 50 electron volts 50 constellation 50 globular clusters 50 supermassive black hole 50 exoplanet 50 X ray emission 50 galaxies 50 COROT 50 Kuiper Belt 50 extrasolar planets 50 distant galaxies 50 Uranus 50 elliptical galaxies 49 pulsar 49 XMM Newton 49 celestial objects 49 habitable planets 49 ecliptic 49 accretion disk 49 comet nucleus 49 ionized gas 49 muon 48 circular orbit 48 supernovae 48 terrestrial planets 48 Enceladus 48 infrared wavelengths 48 corona 48 Jupiter moons 48 comet 48 Solar System 48 interstellar dust 48 galactic 48 comet Wild 48 astronomers 47 dwarf planet 47 Mimas 47 ellipse 47 orb 47 Saturn rings 47 orbited 47 super Earths 47 moon Titan 47 moon Charon