Related by context. Frequent words. (Click for all words.) 67 Orion Nebula 67 nebulae 66 globular clusters 65 dwarf galaxies 65 rocky planets 65 galaxies 65 hot Jupiters 65 brown dwarfs 64 terrestrial planets 64 elliptical galaxies 64 galaxy clusters 64 supermassive black holes 63 nebula 63 spiral galaxies 63 supernova explosion 62 supernova explosions 62 Milky Way Galaxy 61 X ray emission 61 galaxy cluster 61 GRBs 61 supernovae 61 dwarf galaxy 60 distant galaxies 60 distant galaxy 60 galaxy 60 planets 59 Milky Way galaxy 59 quasars 59 neutron stars 59 supermassive black hole 59 interstellar medium 59 Large Magellanic Cloud 59 neutron star 59 supernova remnant 58 HD #b [002] 58 supernovas 58 Eta Carinae 58 super Earths 58 spiral galaxy 57 quasar 57 gamma ray bursts 57 Milky Way 57 gravitationally 57 planets orbiting 56 planet orbiting 56 Solar System 56 magnetosphere 56 exoplanets 56 coronal mass ejections 56 pulsars 56 extrasolar planets 56 exoplanet 56 X ray Observatory 56 interstellar dust 55 ejecta 55 Spitzer Space Telescope 55 unaided eye 55 brown dwarf 55 gamma ray burst 55 nuclei 55 gamma rays 55 celestial objects 55 supernova 55 organic molecules 54 extrasolar planet 54 infrared wavelengths 54 silicates 54 particles 54 magnetic fields 53 gravitational lensing 53 dust particles 53 XMM Newton 53 Saturn moons 53 orbits 53 astrophysical 53 auroras 53 Betelgeuse 53 quark gluon plasma 52 Galaxies 52 cosmic dust 52 ringed planet 52 comets 52 Geminids 52 filaments 52 heliosphere 52 Saturn rings 52 meteor showers 52 comet nucleus 52 atomic nuclei 52 pulsar 52 accreting 51 radioactive decay 51 cosmic rays 51 interstellar space 51 outer layers 51 corona 51 Kuiper Belt 51 single celled 51 superfluid 51 single celled organisms 51 Saturn moon