Related by context. Frequent words. (Click for all words.) 54 globular cluster 51 brown dwarfs 51 NGC 51 Andromeda Galaxy 50 globular clusters 49 Orion Nebula 49 magnetar 49 spiral galaxies 49 supernova remnant 49 distant galaxy 49 COROT 48 spiral galaxy 48 Milky Way Galaxy 48 constellation Leo 48 dwarf galaxy 48 Milky Way 48 quasars 48 dwarf galaxies 48 Large Magellanic Cloud 48 brown dwarf 47 Andromeda galaxy 47 HD #b [002] 47 galaxy cluster 47 galaxies 46 distant galaxies 46 planet orbiting 46 nebulae 46 planets orbiting 45 elliptical galaxies 45 Pleiades 45 supernova explosion 45 ringed planet 45 Jupiter Saturn Uranus 45 Milky Way galaxy 45 Very Large Telescope 45 4 chars 45 X ray Observatory 44 XMM Newton 44 Scorpius 44 globular 44 ecliptic 44 GRBs 44 orbiting 44 supermassive black holes 44 nebula 44 GeV 44 suns 44 galaxy clusters 44 supernovas 44 astronomical objects 43 supernovae 43 quasar 43 supersymmetry 43 galaxy 43 pulsars 43 corona 43 hot Jupiters 43 neutron star 43 redshift 43 orbits 43 electron volts 43 positrons 42 supernova 42 unaided eye 42 celestial object 42 Mimas 42 Deneb 42 extrasolar planets 42 optical telescopes 42 muon 42 celestial objects 42 super Earths 42 Lutetia 42 X ray emission 41 Astronomers 41 Betelgeuse 41 constellation Perseus 41 WIMPs 41 gamma ray bursts 41 muons 41 clusters 41 Spitzer Space Telescope 41 habitable planets 41 Eta Carinae 41 astronomers 41 supermassive black hole 41 gravitationally 41 ionized gas 41 terrestrial planets 40 Gliese 40 R0 40 interstellar dust 40 gamma ray burst 40 infrared telescope 40 pulsar 40 Nebula 40 neutron stars 40 galactic 40 R2 40 Ophiuchus 40 NASA Chandra