Related by context. Frequent words. (Click for all words.) 61 COROT 61 HD #b [002] 60 planet orbiting 58 Gliese 58 extrasolar planet 58 exoplanet 57 rocky planets 57 Orion Nebula 56 distant galaxy 56 galaxy cluster 56 brown dwarf 55 extrasolar planets 55 XMM Newton 55 planets orbiting 54 Betelgeuse 54 exoplanets 54 comet Wild 54 Eta Carinae 53 brown dwarfs 53 Sedna 53 super Earths 53 redshift 52 gamma ray burst 52 NASA Kepler 52 Saturn rings 52 planets 52 unaided eye 51 ringed planet 51 Hubble Telescope 51 globular clusters 51 dwarf galaxy 50 GRBs 50 supernova remnant 50 UB# [003] 50 comet 50 Milky Way Galaxy 50 pulsars 50 Astrophysical Journal Letters 49 quasar 49 nebulae 49 asteroid 49 Geminids 49 gamma ray bursts 49 fainter 49 pulsar 49 NASA Cassini spacecraft 49 Saturn moons 49 spiral galaxy 48 orbits 48 Saturn moon 48 supernova 48 infrared wavelengths 48 galaxies 48 quasars 48 X ray emission 48 Milky Way galaxy 48 Comet Tempel 1 48 galaxy clusters 48 galaxy 48 orbiting 48 sunspot 48 astronomers 48 terrestrial planets 48 moons 48 comet nucleus 47 Kepler 47 Jupiter moons 47 supernovae 47 perigee 47 Perseids 47 Lutetia 47 distant galaxies 47 X ray Observatory 47 Large Magellanic Cloud 47 supernova explosion 47 spiral galaxies 47 interstellar dust 47 Space Telescope 47 Cassiopeia 47 Astrophysical Journal 46 Enceladus 46 Astronomers 46 Uranus 46 Spitzer Space Telescope 46 optical telescopes 46 nebula 46 dwarf galaxies 46 neutron star 46 elliptical galaxies 46 Cassini Huygens 46 Higgs boson 46 Earth asteroids 46 Victoria Crater 46 rover Opportunity 45 corona 45 Alpha Centauri 45 Apophis 45 SDSS 45 Solar System 45 gravitational wave 45 Pluto