Related by context. Frequent words. (Click for all words.) 67 accreting 66 X ray emission 65 nebulae 64 neutron stars 64 neutron star 64 interstellar medium 64 supernova explosions 63 supernova explosion 63 galaxies 63 elliptical galaxies 63 gravitationally 62 ejecta 62 supermassive black hole 62 quasars 62 supermassive black holes 62 quark gluon plasma 61 galaxy clusters 61 magnetar 61 gamma rays 61 gravitational waves 61 spacetime 61 hot Jupiters 60 vortices 60 brown dwarfs 60 gaseous 60 magnetic fields 60 distant galaxies 59 astrophysical 59 GRBs 59 supernovae 59 dwarf galaxy 59 quasar 59 cosmic rays 58 supernovas 58 interstellar dust 58 globular clusters 58 comet nucleus 58 planets 58 superfluid 58 rocky planets 58 vortexes 58 gravitational 58 dwarf galaxies 58 spiral galaxies 57 X ray Observatory 57 terrestrial planets 57 torus 57 gamma ray bursts 57 convective 57 Eta Carinae 57 positrons 57 Milky Way Galaxy 57 Earth magnetosphere 57 nebula 57 muons 57 Saturn rings 56 subatomic particles 56 atomic particles 56 cumulus clouds 56 silicates 56 nuclei 56 galaxy 56 outer planets 56 updrafts 56 atomic nuclei 56 gamma ray burst 56 hydrogen atoms 56 galaxy cluster 56 dynamical 55 cosmic dust 55 blobs 55 HD #b [002] 55 magnetosphere 55 astrophysicists 55 cosmic microwave background 55 super Earths 55 Milky Way 55 brown dwarf 55 particles 55 supernova 55 comet 55 comets 54 coronal mass ejection 54 pulsar 54 Einstein theory 54 dust devils 54 CMEs 54 fermions 54 Milky Way galaxy 54 distant galaxy 54 Saturn moons 54 NASA Chandra 54 electrons 54 Andromeda Galaxy 54 gravitational tug 54 atoms 53 supernova remnant 53 cosmic ray 53 planet orbiting 53 XMM Newton 53 Orion Nebula