Related by context. Frequent words. (Click for all words.) 58 brown dwarf 57 Orion Nebula 57 brown dwarfs 57 globular clusters 56 Milky Way Galaxy 55 planet orbiting 54 HD #b [002] 54 galaxy 54 galaxy cluster 54 Milky Way galaxy 54 distant galaxy 54 rocky planets 54 supernova explosion 53 Gliese 53 galaxies 53 planets orbiting 52 exoplanet 52 orbits 52 extrasolar planet 52 Milky Way 52 Kuiper Belt 51 terrestrial planets 51 Eta Carinae 51 spiral galaxies 51 extrasolar planets 51 planets 51 galactic 50 pulsar 50 quasars 50 elliptical galaxies 50 GRBs 50 spiral galaxy 50 redshift 50 gamma ray burst 50 distant galaxies 50 asteroids 50 exoplanets 49 Solar System 49 WM Keck Observatory 49 XMM Newton 49 astronomers 49 supernovae 49 supermassive black hole 48 comet nucleus 48 Spitzer Space Telescope 48 asteroid 48 celestial bodies 48 galaxy clusters 47 neutron star 47 Betelgeuse 47 Astronomers 47 nebulae 47 nebula 47 gamma ray bursts 47 neutron stars 47 Astronomy 47 dwarf galaxies 47 orbiting 47 ejecta 46 planetary 46 comets 46 celestial objects 46 Earth asteroids 46 supermassive black holes 46 supernova 46 habitable zone 45 supernovas 45 dwarf planet 45 Earth 45 optical telescopes 45 pulsars 45 quasar 45 Saturn moons 44 Sedna 44 interstellar dust 44 asteroid belt 44 Pleiades 44 UB# [003] 44 fainter 44 Astronomical 44 unaided eye 44 Astrophysical Journal 44 NEOs 44 planet 44 ringed planet 44 Iapetus 44 Saturn rings 44 infrared wavelengths 44 outer planets 44 dwarf planets 43 Cassiopeia 43 Planets 43 astrophysicists 43 comet 43 corona 43 Enceladus 43 Alpha Centauri 43 interstellar medium 43 earths 42 interferometry 42 SDSS