Related by context. Frequent words. (Click for all words.) 66 extrasolar planet 66 Eta Carinae 66 distant galaxy 65 XMM Newton 65 X ray emission 64 ringed planet 64 Orion Nebula 64 Andromeda Galaxy 64 nebula 63 magnetar 63 unaided eye 63 dwarf galaxy 63 nebulae 63 HD #b [002] 62 gamma ray burst 62 occultation 62 Geminids 61 supernova remnant 61 planet orbiting 61 astronomers 61 galaxy cluster 60 GRBs 60 brown dwarf 60 infrared wavelengths 60 extrasolar planets 60 exoplanet 60 COROT 60 comet nucleus 60 planets orbiting 60 Milky Way Galaxy 59 comet 59 supernova explosion 59 supernova 59 spiral galaxy 59 aurora 59 Saturn rings 59 distant galaxies 59 Betelgeuse 59 elliptical galaxies 59 luminosity 59 Spitzer Space Telescope 58 interstellar dust 58 Jupiter moons 58 quasar 58 infrared telescope 58 globular clusters 58 starlight 58 celestial objects 58 optical telescope 57 galaxy 57 brown dwarfs 57 NASA Cassini spacecraft 57 spiral galaxies 57 Milky Way galaxy 57 Large Magellanic Cloud 57 redshift 56 quasars 56 galaxies 56 supermoon 56 exoplanets 56 Milky Way 56 meteor shower 56 Cassiopeia 56 cosmic ray 55 astrophysical 55 gravitational lensing 55 Very Large Telescope 55 orbiting telescope 55 neutron star 55 rocky planets 55 supernova explosions 55 gamma ray bursts 55 auroras 55 Cassini spacecraft 55 ejecta 55 orbiting 55 astronomical observations 55 ecliptic 55 Sedna 55 orbits 55 Perseids 55 perigee 54 neutron stars 54 pulsars 54 moon Titan 54 cometary 54 IceCube 54 Cassini 54 Scorpius 54 fainter 54 ESO Very Large Telescope 54 Hubble Space Telescope 54 planets 54 celestial 54 dwarf galaxies 54 galaxy clusters 54 cosmic microwave background 54 optical telescopes 53 Astronomers 53 gravitational wave 53 supernovae