Related by context. Frequent words. (Click for all words.) 66 planets orbiting 65 distant galaxy 65 Eta Carinae 64 HD #b [002] 64 Orion Nebula 64 nebula 64 supernova explosion 63 supernova remnant 63 distant galaxies 62 dwarf galaxy 62 nebulae 62 magnetar 62 supernova explosions 62 galaxy cluster 62 quasar 61 astronomical objects 61 globular cluster 60 globular clusters 60 XMM Newton 60 gamma ray burst 60 brown dwarf 60 planet orbiting 60 spiral galaxy 60 X ray emission 60 GRBs 60 infrared wavelengths 60 galaxies 59 Andromeda galaxy 59 quasars 59 celestial object 59 Milky Way Galaxy 59 Saturn rings 59 elliptical galaxies 59 supernovae 59 Andromeda Galaxy 59 galaxy clusters 58 extrasolar planets 58 brown dwarfs 58 galaxy 57 celestial objects 57 neutron star 57 auroral 57 ionized gas 57 spiral galaxies 57 Spitzer Space Telescope 57 extrasolar planet 57 Betelgeuse 57 Earth magnetosphere 57 Saturn moons 57 dwarf galaxies 57 exoplanets 56 planets 56 Large Magellanic Cloud 56 supernovas 56 redshift 56 supernova 56 rocky planets 56 X ray Observatory 56 habitable planets 56 neutron stars 56 comet nucleus 56 unaided eye 55 Jupiter moons 55 terrestrial planets 55 spherical 55 Milky Way 55 supermassive black holes 55 corona 54 astronomers 54 supermassive black hole 54 nuclei 54 pulsars 54 orbits 54 ringed planet 54 super Earths 54 ejecta 54 Milky Way galaxy 54 astrophysical 53 comet 53 gamma ray bursts 53 constellation Leo 53 interstellar medium 53 spherical shape 53 NASA Chandra 53 Saturn moon Enceladus 53 orbiting 53 heliosphere 53 gravitational lensing 53 quark gluon plasma 53 COROT 53 astrophysicists 53 luminosity 53 hot Jupiters 53 silicates 53 torus 53 vortices 53 auroras 53 orb 52 filaments 52 spectra 52 starbursts