Related by context. Frequent words. (Click for all words.) 66 galaxy cluster 66 distant galaxy 66 quasar 65 supernova remnant 65 Orion Nebula 64 HD #b [002] 64 Andromeda Galaxy 63 Large Magellanic Cloud 63 dwarf galaxy 63 Andromeda galaxy 63 quasars 63 ESO Very Large Telescope 63 redshift 62 XMM Newton 62 gravitational lensing 61 distant galaxies 61 magnetar 61 brown dwarf 60 planets orbiting 60 COROT 60 gamma ray burst 60 X ray emission 60 planet orbiting 60 supernova explosion 59 interferometry 59 Eta Carinae 59 globular cluster 59 infrared telescope 59 spiral galaxy 59 extrasolar planet 59 Very Large Telescope 59 WM Keck Observatory 59 Spitzer Space Telescope 58 brown dwarfs 58 galaxy clusters 58 X ray Observatory 58 cosmic microwave background 58 celestial object 58 spiral galaxies 58 astronomers 58 elliptical galaxies 57 nebula 57 Milky Way Galaxy 57 GRBs 57 unaided eye 57 Betelgeuse 57 infrared wavelengths 56 supernovae 56 occultation 56 spectroscopic 56 globular clusters 56 gamma rays 56 Very Large Array 56 exoplanet 56 transmission electron microscope 56 supernova 55 auroral 55 comet nucleus 55 interferometer 55 X ray beam 55 pulsar 55 celestial objects 55 Milky Way galaxy 55 extrasolar planets 55 gamma ray 55 optical telescopes 55 gravitational wave 54 exoplanets 54 galaxies 54 NASA Chandra 54 spectra 54 neutron star 54 Spectrometer 54 scanning electron microscope 54 neutrino 54 WIMPs 54 ejecta 54 NASA Cassini spacecraft 54 Cassiopeia 53 astronomical objects 53 comet 53 Gliese 53 supernova explosions 53 Cassini spacecraft 53 nebulae 53 Jupiter moons 53 Astronomers 53 muon 53 interstellar dust 53 laser pulses 53 supernovas 53 Milky Way 53 Sedna 53 photometric 53 rocky planets 53 supermassive black hole 53 optical telescope 53 constellation Leo 53 super Earths 53 muons 53 gamma ray bursts