Related by context. Frequent words. (Click for all words.) 65 extrasolar planets 64 HD #b [002] 64 exoplanets 62 Saturn rings 62 GRBs 61 habitable planets 61 Andromeda Galaxy 61 COROT 61 distant galaxies 61 planets orbiting 61 planets 61 distant galaxy 60 terrestrial planets 60 astronomers 60 Orion Nebula 60 Voyager spacecraft 60 Eta Carinae 60 globular clusters 60 dwarf galaxies 60 Cancri 59 Andromeda galaxy 59 Milky Way Galaxy 59 microlensing 59 brown dwarfs 59 rocky planets 59 outer planets 59 extrasolar planet 59 Gamma ray bursts 59 XMM Newton 59 magnetar 59 super Earths 58 Large Magellanic Cloud 58 celestial object 58 supernova remnant 57 Crab Nebula 57 Milky Way galaxy 57 planet orbiting 57 Kuiper belt 57 elliptical galaxies 57 dwarf galaxy 57 celestial bodies 57 Jupiter Saturn 57 astronomical objects 57 WIMPs 57 Earth asteroids 57 Saturn moons 57 Solar System 57 spiral galaxies 57 spiral galaxy 57 Lick Observatory 56 infrared wavelengths 56 nebulae 56 supernovae 56 Earth magnetosphere 56 exoplanet 56 supernovas 56 Gliese #g 56 planet orbits 56 supernova explosions 56 ringed planet 56 constellation Perseus 56 habitable planet 56 supernova explosion 56 galaxies 56 interstellar dust 55 orbits 55 brown dwarf 55 pulsars 55 X ray emission 55 comets 55 asteroids 55 NASA Kepler 55 Jupiter moons 55 galaxy cluster 55 Mimas 55 astrophysicists 55 galaxy clusters 55 Saturn moon 55 gamma ray bursts 55 constellation Orion 54 quasars 54 cosmic rays 54 Cassini Huygens 54 meteoroids 54 accretion disk 54 cosmologists 54 Gliese 54 astrobiologists 54 gamma ray burst 54 Milky Way 54 Saturn moon Enceladus 54 rock outcrop 54 globular cluster 54 Jupiter Saturn Uranus 54 orbiting 54 Betelgeuse 54 supernova 54 hot Jupiters 54 optical telescopes 53 celestial objects 53 constellation Leo