Related by context. Frequent words. (Click for all words.) 66 accretion disk 64 supernova explosion 63 galaxy formation 63 supernova explosions 63 planets 63 galaxies 63 interstellar dust 62 Andromeda galaxy 62 solar nebula 62 globular cluster 62 dwarf galaxy 62 galaxy 62 globular clusters 61 terrestrial planets 61 planetary nebula 61 distant galaxy 61 X ray emission 61 gravitationally 60 rocky planets 60 Eta Carinae 60 interstellar medium 60 brown dwarfs 60 ionized gas 60 nebulae 60 galaxy cluster 60 accreting 60 Milky Way Galaxy 60 supernova remnant 59 observable universe 59 ejecta 59 elliptical galaxies 59 supermassive black hole 59 torus 59 spiral galaxies 59 supernovas 59 galaxy clusters 59 distant galaxies 58 magnetar 58 dwarf galaxies 58 nebula 58 quasars 58 planet orbits 58 quasar 58 brown dwarf 58 Kuiper belt 58 GRBs 58 auroral 58 supermassive black holes 58 comet nucleus 57 planets orbiting 57 supernovae 57 astronomical objects 57 HD #b [002] 57 supernova remnants 57 hot Jupiters 57 Orion Nebula 57 Milky Way galaxy 57 Andromeda Galaxy 57 Type Ia supernovae 57 galactic 56 planet orbiting 56 Crab Nebula 56 planetary 56 outer planets 56 astrophysical 56 habitable planets 56 nuclei 56 meteoroids 56 celestial object 56 magnetosphere 56 Earth magnetosphere 56 vortices 56 silicates 56 Saturn moons 56 Large Magellanic Cloud 56 neutron star 56 Fomalhaut 55 Saturn rings 55 Saturn moon Enceladus 55 Gamma ray bursts 55 spiral galaxy 55 neutron stars 55 Hubble observations 55 gravitational tug 55 cometary 55 Jupiter Saturn 55 Milky Way 55 dynamical 55 haloes 55 Enceladus 54 spacetime 54 extrasolar planets 54 supernova 54 interplanetary spacecraft 54 morphologies 54 universe 54 convective 54 comet 54 gaseous 54 magnetic fields 54 orbiting