Related by context. Frequent words. (Click for all words.) 60 brown dwarf 59 brown dwarfs 58 Eta Carinae 57 HD #b [002] 56 Gliese 56 supernova explosion 55 dwarf galaxies 55 neutron star 55 planets orbiting 54 elliptical galaxies 54 planet orbiting 54 distant galaxy 54 supernova 53 Orion Nebula 53 supernovae 53 exoplanets 53 terrestrial planets 53 rocky planets 52 globular clusters 52 UB# [003] 51 neutron stars 51 supermassive black hole 51 pulsar 51 supermassive black holes 51 extrasolar planet 50 galaxies 50 quasars 50 Betelgeuse 50 extrasolar planets 50 Milky Way 50 planets 50 exoplanet 50 quasar 50 gamma ray burst 50 pulsars 49 Milky Way Galaxy 49 GRBs 49 Sedna 48 galaxy cluster 48 nebula 48 Milky Way galaxy 48 galaxy 48 dwarf planets 47 orbits 47 astrophysicists 47 astronomers 46 distant galaxies 46 supernovas 46 habitable zone 45 gamma ray bursts 45 Kuiper Belt 45 spiral galaxies 45 Ophiuchus 45 orbiting 45 redshift 45 suns 45 unaided eye 45 SETI @ home 45 Higgs boson 45 optical telescopes 44 Astronomers 44 spiral galaxy 44 fainter 44 positrons 44 galaxy clusters 43 asteroid belt 42 X ray Observatory 42 cosmologists 42 dwarf planet 41 gamma rays 41 Scorpius 41 electron volts 41 Kepler 41 sunspot 41 Perseids 41 atomic nuclei 41 Velociraptor 41 gravitational pull 41 particle accelerators 40 XMM Newton 40 Spitzer Space Telescope 40 Iapetus 40 comets 40 cosmic ray 40 neutrinos 40 planetary 40 cosmic rays 40 orbited 40 comet 40 Earth Simulator 40 asteroids 40 morbidly obese 40 nebulae 40 ejecta 40 Saturn rings 39 gravitational waves 39 nuclei 39 Solar System 39 deuterium 39 Lowell Observatory 39 asteroid