Related by context. Frequent words. (Click for all words.) 68 supernova explosions 66 neutron stars 65 neutron star 65 supernova explosion 65 accretion disk 64 ionized gas 64 dwarf galaxy 64 hot Jupiters 63 Gamma ray bursts 63 galaxy formation 63 globular clusters 63 globular cluster 62 magnetar 62 elliptical galaxies 62 supernovas 62 atomic nuclei 61 galaxy clusters 61 accreting 61 supernovae 61 supermassive black holes 61 galaxies 61 rocky planets 61 Milky Way Galaxy 60 nebulae 60 brown dwarfs 60 interstellar medium 59 spiral galaxies 59 dwarf galaxies 59 gravitationally 59 planet orbits 59 subatomic particle 59 Kuiper belt 59 singularities 58 antiprotons 58 ejecta 58 brown dwarf 58 super Earths 58 distant galaxies 58 X ray emission 58 terrestrial planets 57 quasars 57 interstellar dust 57 nuclei 57 planets 57 Eta Carinae 57 Andromeda galaxy 57 subatomic particles 57 outer layers 57 Milky Way galaxy 57 galaxy 56 quark gluon plasma 56 Milky Way 56 magnetic fields 56 coronal mass ejections 56 torus 56 gaseous 56 meteoroids 56 supernova 56 Orion Nebula 56 GRBs 56 spacetime 56 gravitational attraction 56 supermassive black hole 56 Jupiter Saturn Uranus 55 gamma rays 55 quasar 55 vortexes 55 comet nucleus 55 subatomic 55 magnetosphere 55 nebula 55 radioactive decay 55 silicates 55 neutrons 55 Neutrinos 55 Earth magnetosphere 54 galaxy cluster 54 astrophysical 54 WIMPs 54 distant galaxy 54 gamma ray bursts 54 atoms 54 atomic particles 54 filaments 54 muons 54 Saturn rings 54 Crab Nebula 54 hydrogen atoms 54 lithosphere 54 positrons 54 haloes 54 supernova remnant 53 Bose Einstein condensate 53 bosons 53 nanoscopic 53 comets 53 Jupiter Saturn 53 magnetic flux 53 habitable planet 53 particle accelerators 53 cosmic rays