Related by context. Frequent words. (Click for all words.) 68 Gliese #g 65 super Earths 64 Kuiper belt 64 extrasolar planet 64 magnetar 64 HD #b [002] 62 galaxy cluster 62 supernova explosion 62 dwarf galaxy 61 exoplanets 61 Milky Way Galaxy 61 rocky planets 61 ejecta 61 extrasolar planets 61 meteoroid 61 comet nucleus 60 Eta Carinae 60 exoplanet 60 brown dwarf 60 moon Charon 60 brown dwarfs 60 Andromeda galaxy 60 heliosphere 60 accretion disk 59 asteroid 59 X ray emission 59 magnetosphere 59 Earth magnetosphere 59 comet 59 gamma ray burst 59 supernova remnant 59 habitable planets 59 neutron star 58 planet orbiting 58 planets 58 ionized gas 58 globular cluster 58 Kuiper Belt 58 distant galaxy 58 lithosphere 58 globular clusters 58 galaxy clusters 58 terrestrial planets 58 Enceladus 58 Large Magellanic Cloud 58 meteoroids 57 Gliese 57 Saturn rings 57 XMM Newton 57 habitable planet 57 Sedna 57 Itokawa 57 Jupiter Saturn Uranus 57 galaxy 57 COROT 57 quasar 57 quark gluon plasma 57 Milky Way galaxy 57 redshift 57 celestial object 57 elliptical galaxies 57 hot Jupiters 57 Betelgeuse 57 olivine 57 cosmic microwave background 57 Andromeda Galaxy 57 GRBs 57 infrared telescope 57 planet 57 Crab Nebula 56 geologically active 56 Milky Way 56 OGLE 56 supernova 56 volcanically active 56 planetary 56 Saturn moon Enceladus 56 optical telescopes 56 Orion Nebula 56 Saturn moons 56 nebula 56 aerosol particles 56 asteroids 56 supernova explosions 55 comets 55 galaxies 55 neutrino 55 infrared wavelengths 55 planets orbiting 55 astronomers 55 interstellar dust 55 supermassive black hole 55 coronal mass ejection 55 landmasses 55 UB# [003] 55 quasars 55 muon 55 dwarf planet 55 constellation Leo 55 orbiting 55 dwarf planets