Related by context. Frequent words. (Click for all words.) 70 Orion Nebula 70 nebula 69 spiral galaxy 68 supernova explosion 68 galaxy cluster 68 dwarf galaxy 67 quasars 67 elliptical galaxies 66 X ray emission 66 distant galaxy 66 nebulae 66 quasar 66 galaxies 65 GRBs 65 supermassive black hole 65 HD #b [002] 65 supernova explosions 65 Milky Way Galaxy 65 supernovae 64 brown dwarf 64 gamma ray burst 64 spiral galaxies 64 galaxy 64 supernova 63 Milky Way galaxy 63 globular clusters 63 Large Magellanic Cloud 63 distant galaxies 62 Eta Carinae 61 galaxy clusters 61 neutron stars 61 redshift 60 supermassive black holes 60 neutron star 60 brown dwarfs 60 supernovas 60 Milky Way 59 gamma ray bursts 59 planet orbiting 58 XMM Newton 58 pulsar 58 Spitzer Space Telescope 58 corona 58 interferometry 58 dwarf galaxies 58 interstellar dust 58 Betelgeuse 57 hot Jupiters 57 gravitational lensing 57 infrared wavelengths 57 rocky planets 57 ejecta 57 gamma rays 56 exoplanets 56 ringed planet 56 extrasolar planets 56 interstellar medium 56 planets orbiting 56 exoplanet 56 GRB 56 pulsars 56 extrasolar planet 55 astrophysical 55 gravitational waves 55 spacetime 55 luminosity 55 X ray Observatory 55 unaided eye 55 orbits 55 accreting 55 planets 55 starburst 55 terrestrial planets 54 astronomers 54 NASA Chandra 54 comet nucleus 54 NGC 54 cosmic microwave background 54 vortices 54 Iapetus 54 optical telescopes 53 ESO Very Large Telescope 53 coronal mass ejections 53 Saturn rings 53 spectroscopic 53 positrons 53 Enceladus 53 fainter 53 Cassiopeia 53 magnetic fields 53 super Earths 53 gravitationally 53 comets 53 Gliese 52 filaments 52 spectra 52 coronal mass ejection 52 Sedna 52 infrared telescope 52 quark gluon plasma 52 Kuiper Belt