Related by context. Frequent words. (Click for all words.) 57 XMM Newton 57 SDSS 57 Orion Nebula 56 Fomalhaut 55 OGLE 55 quasars 54 galaxy cluster 54 COROT 54 redshift 53 astronomical objects 53 ESO Very Large Telescope 53 auroral 53 supernova remnant 52 planets orbiting 52 X ray emission 52 celestial objects 51 globular clusters 51 exoplanets 51 extrasolar planets 51 extrasolar planet 51 HD #b [002] 51 Large Magellanic Cloud 51 z = 51 gamma ray burst 51 globular cluster 50 distant galaxies 50 gamma ray bursts 50 Spitzer Space Telescope 50 infrared wavelengths 50 unaided eye 50 elliptical galaxies 50 exoplanet 49 brown dwarf 49 spectra 49 Sedna 49 distant galaxy 49 planet orbiting 49 IRAS 49 Betelgeuse 49 Andromeda Galaxy 49 Crab Nebula 49 GRBs 49 THEMIS 49 Very Large Array 49 brown dwarfs 49 nebula 49 GRB 48 quasar 48 Milky Way Galaxy 48 constellation Perseus 48 Spectrometer 48 WM Keck Observatory 48 Mimas 48 X ray Observatory 48 IceCube 48 magnetar 48 sunspot 48 GeV 47 spectroscopic 47 Sunspots 47 Astronomers 47 Andromeda galaxy 47 hyperspectral 47 interferometry 47 gravitational lensing 47 COSMIC 47 WMAP 47 cosmic ray 47 NASA Kepler 47 constellation Leo 47 transmission electron microscope 47 astronomers 46 dwarf galaxy 46 infrared 46 interferometer 46 solar flares 46 galaxies 46 Very Large Telescope 46 substorms 46 galaxy clusters 46 Pleiades 45 WIMPs 45 spiral galaxy 45 VLA 45 infrared radiation 45 Space Telescope 45 ecliptic 45 NASA Chandra 45 optical telescopes 45 pulsars 45 Arcturus 45 cosmic microwave background 45 occultation 45 supernovae 45 irradiance 45 HiRISE 45 Eta Carinae 45 nebulae 45 NASA Cassini spacecraft 45 photometric 45 Kuiper belt