Related by context. Frequent words. (Click for all words.) 69 galaxy cluster 69 Large Magellanic Cloud 68 distant galaxy 68 planet orbiting 68 Orion Nebula 68 supernova explosion 67 Andromeda galaxy 67 supernova remnant 67 brown dwarf 67 HD #b [002] 65 dwarf galaxy 65 Andromeda Galaxy 65 Eta Carinae 65 planets orbiting 64 spiral galaxy 63 globular cluster 63 rocky planets 63 magnetar 62 brown dwarfs 62 Milky Way galaxy 62 Milky Way Galaxy 62 galaxy 61 nebula 61 supernova 61 quasar 61 elliptical galaxies 61 terrestrial planets 61 globular clusters 60 planets 60 Betelgeuse 60 neutron star 60 galaxies 60 Solar System 59 extrasolar planet 59 Sedna 59 exoplanets 59 dwarf galaxies 59 gamma ray burst 58 XMM Newton 58 spiral galaxies 58 extrasolar planets 58 Spitzer Space Telescope 58 X ray emission 58 Milky Way 58 pulsar 58 quasars 58 supernova explosions 58 Gliese 58 exoplanet 57 super Earths 57 distant galaxies 57 Kuiper Belt 57 Iapetus 56 orbits 56 asteroid belt 56 supernovae 56 ringed planet 56 ejecta 56 nebulae 56 Cassiopeia 56 GRBs 55 supermassive black hole 55 galaxy clusters 55 pulsars 55 hot Jupiters 55 orbiting 54 redshift 54 infrared wavelengths 54 supernovas 54 X ray Observatory 54 astronomical objects 54 unaided eye 54 comet nucleus 54 COROT 54 fainter 54 Andromeda 54 accreting 53 Alpha Centauri 53 neutron stars 53 planetary 53 interstellar medium 53 meteoroids 53 gravitationally 53 astronomers 53 asteroids 53 asteroid 52 corona 52 WM Keck Observatory 52 Earth magnetosphere 52 silicates 52 gravitational tug 52 interstellar dust 52 supermassive black holes 52 Saturn moons 51 comet 51 galactic 51 WMAP 51 SDSS 51 astrophysical 51 optical telescopes 51 NASA Kepler