Related by context. Frequent words. (Click for all words.) 66 galaxy cluster 66 distant galaxy 65 Andromeda galaxy 64 globular cluster 64 dwarf galaxy 63 Kuiper belt 62 spiral galaxy 61 Large Magellanic Cloud 61 planetary nebula 61 observable universe 60 Cancri 60 Andromeda Galaxy 59 planet orbits 59 supernova remnant 59 Orion Nebula 59 elliptical galaxies 58 supernova explosion 58 Fomalhaut 58 nebula 58 supernova remnants 58 magnetar 58 accretion disk 58 distant galaxies 58 X ray emission 57 Eta Carinae 57 galaxy 57 Crab Nebula 57 spiral galaxies 57 COROT 57 redshift 57 quasar 57 globular clusters 57 Milky Way galaxy 57 galaxies 57 galaxy clusters 57 celestial object 57 Milky Way 56 Gamma ray bursts 56 Galaxy Evolution 56 visible wavelengths 56 quasars 56 constellation Leo 56 ionized gas 56 Milky Way Galaxy 56 GRBs 56 galaxy formation 56 Betelgeuse 55 GRB # 55 HD #b [002] 55 Very Large Telescope 55 constellation Perseus 55 brown dwarfs 55 constellation Orion 55 dwarf galaxies 55 solar nebula 55 planet orbiting 55 gamma ray burst 54 rocky planets 54 XMM Newton 54 galactic 54 brown dwarf 54 nebulae 53 ecliptic 53 microlensing 53 Gliese #g 53 Mimas 53 supernova explosions 53 orbiting Saturn 53 unaided eye 53 supercluster 53 comet nucleus 53 supermassive black hole 53 terrestrial planets 52 constellation 52 spatial dimensions 52 neutron stars 52 spacetime 52 gravitational lensing 52 optical telescope 52 accreting 52 auroral 52 Pulsars 52 infrared wavelengths 52 interferometry 52 astronomical objects 52 optical telescopes 51 ringed planet 51 ejecta 51 GeV 51 supermassive black holes 51 planets orbiting 51 super Earths 51 orbiting 51 extrasolar planets 51 neutron star 51 Jupiter moons 51 planetoid 51 planets 51 orbits 51 ESO Very Large Telescope 51 habitable planets