Related by context. Frequent words. (Click for all words.) 65 Andromeda Galaxy 63 GRB # 63 dwarf galaxy 62 globular cluster 61 Andromeda galaxy 61 XMM Newton 61 galaxy cluster 61 distant galaxy 60 planetary nebulae 60 Cancri 60 HD #b [002] 60 Large Magellanic Cloud 60 Orion Nebula 59 microlensing 59 Galaxy Evolution 59 supernova remnant 59 planetary nebula 58 Sedna 58 gamma ray burst 58 X ray emission 57 redshift 57 globular clusters 57 Milky Way Galaxy 57 planet orbiting 56 Eta Carinae 56 Crab Nebula 56 Kuiper belt 56 brown dwarfs 56 extrasolar planet 56 supernova remnants 56 VLBA 56 brown dwarf 56 quasar 56 optical telescopes 56 Hubble observations 56 magnetar 56 GRBs 56 Gliese #g 56 nebula 56 constellation Perseus 55 COROT 55 quasars 55 celestial object 55 unaided eye 55 Spectrometer 55 Gamma ray bursts 55 interferometry 55 astronomical objects 55 spiral galaxy 55 OGLE 55 dwarf galaxies 54 WM Keck Observatory 54 astronomers 54 Mimas 54 pulsar 54 X ray Observatory 54 pulsars 54 Phaethon 54 celestial objects 54 Suzaku 53 infrared wavelengths 53 Betelgeuse 53 Milky Way 53 exoplanet 53 elliptical galaxies 53 Very Large Array 53 ESO Very Large Telescope 53 ejecta 53 supernova explosion 53 NICMOS 53 Fomalhaut 53 auroral 53 WIMPs 53 spiral galaxies 53 planet orbits 53 Pulsars 53 distant galaxies 53 NASA Chandra 53 Very Large Telescope 53 ecliptic 52 planets orbiting 52 terrestrial planets 52 constellation Orion 52 Solar System 52 orbiting Saturn 52 EPOXI 52 gamma ray bursts 52 supernovae 52 Gliese 52 galaxies 52 spectroscopic 52 extrasolar planets 52 OSIRIS 52 constellation Leo 52 Type Ia supernovae 52 Milky Way galaxy 51 occultation 51 supernova 51 gravitational lensing 51 nebulae 51 optical telescope