Related by context. Frequent words. (Click for all words.) 66 planet orbits 63 HD #b [002] 62 Andromeda galaxy 62 planet orbiting 60 supernova explosion 60 Milky Way Galaxy 60 planets orbiting 60 Crab Nebula 60 globular cluster 59 Gamma ray bursts 59 Eta Carinae 59 brown dwarf 59 ringed planet 59 COROT 59 constellation Orion 58 distant galaxy 58 observable universe 58 super Earths 58 orbiting 57 Orion Nebula 57 orbits 57 elliptical galaxies 57 supernova explosions 57 Andromeda Galaxy 57 galaxy cluster 57 moon Charon 57 Betelgeuse 57 spiral galaxy 57 celestial object 56 gamma ray burst 56 dwarf galaxy 56 supernova remnant 56 magnetar 56 planets 56 infrared telescope 56 accretion disk 56 Milky Way galaxy 56 Large Magellanic Cloud 56 constellation Leo 56 planetary nebula 55 X ray emission 55 Fomalhaut 55 extrasolar planet 55 Cancri 55 Gliese #g 55 exoplanet 55 brown dwarfs 55 nebula 55 exoplanets 55 galaxy 55 suns 55 quasar 54 Scorpius 54 planetoid 54 rocky planets 54 supernova 54 New Horizons spacecraft 54 neutron star 54 galaxies 54 galactic 54 outer planets 54 comet 54 rover Opportunity 54 supermassive black hole 54 Cassini Huygens 54 GRB # 54 Saturn moon 54 Opportunity rover 54 quasars 54 interplanetary spacecraft 54 Milky Way 54 comet nucleus 54 moon Titan 54 supernovas 54 nebulae 53 Mimas 53 supernova remnants 53 habitable planets 53 Kuiper belt 53 hot Jupiters 53 ionized gas 53 Spitzer Space Telescope 53 robotic spacecraft 53 supernovae 53 GRBs 53 distant galaxies 53 Gliese 53 circular orbit 53 supermassive black holes 53 fainter 53 extrasolar planets 53 meteoroids 52 field Infrared Survey 52 Jupiter moons 52 gravitationally 52 globular clusters 52 rovers Spirit 52 unaided eye 52 orbiting Saturn 52 X ray Observatory 52 spiral galaxies