Related by context. Frequent words. (Click for all words.) 66 planet orbits 66 HD #b [002] 65 dwarf galaxy 64 Gliese #g 64 planetary nebulae 64 globular cluster 64 magnetar 64 Cancri 63 super Earths 63 Andromeda galaxy 63 GRB # 63 Kuiper belt 62 rocky planets 62 planet orbiting 62 Milky Way Galaxy 62 galaxy cluster 62 exoplanet 62 brown dwarfs 62 extrasolar planet 61 microlensing 61 Galaxy Evolution 61 distant galaxy 61 brown dwarf 61 gamma ray burst 61 supernova explosion 61 Eta Carinae 61 subatomic particle 60 observable universe 60 Orion Nebula 59 elliptical galaxies 59 planetoid 59 terrestrial planets 59 COROT 59 Andromeda Galaxy 59 Gamma ray bursts 59 globular clusters 59 hot Jupiters 59 constellation Leo 59 dwarf galaxies 59 Milky Way galaxy 58 supernova remnant 58 planetary nebula 58 GRBs 58 celestial object 58 galaxy formation 58 X ray emission 58 neutron star 58 redshift 58 Sedna 58 orbiting 58 habitable planets 58 quasar 58 extrasolar planets 57 galaxy clusters 57 exoplanets 57 infrared telescope 57 Large Magellanic Cloud 57 meteoroid 57 Kuiper Belt 57 moon Charon 57 Gliese 57 galaxies 57 asteroid 57 Phaethon 57 Betelgeuse 57 Titan Saturn 56 Crab Nebula 56 spiral galaxies 56 supernova 56 Iapetus 56 Fomalhaut 56 supermassive black hole 56 accretion disk 56 spiral galaxy 56 Saturn moons 56 neutrino 56 ringed planet 56 Halley comet 56 supercontinent 55 solar nebula 55 supernova explosions 55 quasars 55 XMM Newton 55 planets orbiting 55 Earth magnetosphere 55 galaxy 55 UB# [003] 55 cosmic microwave background 55 planets circling 55 Type Ia supernovae 55 nebula 55 Saturn rings 55 R#a# 55 interplanetary spacecraft 55 astronomers 54 supermoon 54 outer planets 54 Spitzer Space Telescope 54 Saturn moon 54 habitable planet 54 constellation Perseus