Related by context. Frequent words. (Click for all words.) 60 neutron star 60 magnetar 58 accreting 58 supernova explosion 57 dwarf galaxy 55 ionized gas 55 quark gluon plasma 55 supernova explosions 54 supermassive black holes 54 atomic nuclei 54 neutron stars 54 galaxy clusters 54 galaxies 54 supermassive black hole 53 subatomic 53 interstellar medium 53 supernova 53 globular cluster 53 galaxy cluster 53 distant galaxy 53 comet nucleus 53 galaxy 52 distant galaxies 52 Kuiper belt 52 gravitationally 52 spacetime 52 subatomic particles 52 dwarf galaxies 52 quasar 52 galaxy formation 52 atomic nucleus 51 gaseous 51 globular clusters 51 atomic particles 51 cosmic 51 brown dwarf 51 neutrons 50 X ray emission 50 dense 50 pulsar 50 elliptical galaxies 50 cosmic dust 50 gamma rays 50 brown dwarfs 50 galactic 50 interstellar dust 50 Eta Carinae 49 Andromeda galaxy 49 ejecta 49 supernova remnant 49 supernovas 49 nuclei 49 GeV 49 X ray Observatory 49 atoms 49 supernovae 48 neutrino 48 luminosity 48 quasars 48 molten 48 comet 48 magnetic fields 48 interstellar 48 Milky Way galaxy 48 vaporised 48 neutrinos 47 hydrogen atoms 47 gravitational wave 47 torus 47 proton 47 Large Magellanic Cloud 47 molten iron 47 superfluid 47 electron volts 47 astrophysical 47 particle 47 vortexes 47 gravitational 47 nebulae 47 singularity 47 spherical shape 46 Milky Way 46 dynamical 46 protons 46 angular momentum 46 rocky planets 46 Milky Way Galaxy 46 gravitational waves 46 nanometer sized 46 nebula 46 cosmic rays 46 electrons 46 hot Jupiters 46 positrons 46 radioactive decay 46 WIMPs 46 electron beams 46 primordial 46 muons 46 universe 46 outer layers