Related by context. Frequent words. (Click for all words.) 63 supernova remnant 62 distant galaxy 61 astronomical objects 60 galaxy cluster 60 elliptical galaxies 59 XMM Newton 59 distant galaxies 59 X ray emission 59 GRBs 59 quasars 58 Eta Carinae 58 extrasolar planet 58 extrasolar planets 58 globular clusters 57 brown dwarfs 57 exoplanets 57 planets orbiting 57 Andromeda galaxy 57 accretion disk 57 microlensing 57 optical telescopes 57 planet orbiting 57 HD #b [002] 56 globular cluster 56 celestial object 56 habitable planets 56 dwarf galaxy 56 infrared wavelengths 56 Orion Nebula 56 galaxy clusters 56 supernova explosion 56 spiral galaxies 55 Andromeda Galaxy 55 galaxies 55 exoplanet 55 WIMPs 55 pulsar 55 auroral 55 dwarf galaxies 55 unaided eye 55 Jupiter moons 55 magnetar 55 astronomers 55 redshift 55 pulsars 54 gamma ray bursts 54 COROT 54 quasar 54 Cancri 54 brown dwarf 54 rocky planets 54 Large Magellanic Cloud 54 Crab Nebula 54 spectroscopic 54 gravitational lensing 53 Saturn rings 53 Fomalhaut 53 gamma ray burst 53 telescopes 53 X ray Observatory 53 interferometry 53 Milky Way galaxy 53 supernovae 53 nebulae 52 ecliptic 52 Kuiper belt 52 ringed planet 52 super Earths 52 meteoroids 52 Geminids 52 ejecta 52 nebula 52 gravitational wave 52 supernova 52 planets 52 NASA Cassini spacecraft 51 infrared telescope 51 CMEs 51 spiral galaxy 51 celestial objects 51 galaxy formation 51 OGLE 51 ESO Very Large Telescope 51 spectra 51 AGN 51 gamma rays 51 Very Large Array 51 Spitzer Space Telescope 51 infrared 51 moon Charon 51 interstellar dust 51 Very Large Telescope 50 comet nucleus 50 terrestrial planets 50 Mimas 50 supermassive black hole 50 supernovas 50 optical microscope 50 telescope 50 planet orbits 50 comet