Related by context. Frequent words. (Click for all words.) 67 X ray emission 66 magnetar 65 supernova remnant 65 neutron star 65 supernova explosion 64 Eta Carinae 64 globular cluster 64 quasar 62 distant galaxy 61 supermassive black hole 61 galaxy cluster 61 dwarf galaxy 61 ejecta 60 brown dwarf 60 XMM Newton 60 neutron stars 59 supernova 59 brown dwarfs 59 pulsar 59 quasars 59 gamma ray burst 59 GRBs 58 Orion Nebula 58 Milky Way Galaxy 58 HD #b [002] 58 supernova explosions 58 gamma rays 58 elliptical galaxies 58 galaxy clusters 57 globular clusters 57 supernovae 57 redshift 57 planets orbiting 57 Large Magellanic Cloud 57 gravitationally 56 Andromeda Galaxy 56 extrasolar planet 56 spiral galaxy 56 galaxy 56 accreting 56 distant galaxies 56 Andromeda galaxy 55 spacetime 55 pulsars 55 spiral galaxies 55 supermassive black holes 55 cosmic rays 55 planet orbiting 55 astronomical objects 55 cosmic ray 55 supernovas 55 muons 55 gamma ray bursts 55 galaxies 55 dwarf galaxies 54 nebula 54 nebulae 54 GRB 54 auroral 54 comet nucleus 54 astrophysicists 54 muon 54 interstellar medium 54 gravitational lensing 54 orbits 54 neutrino 54 WIMPs 54 COROT 54 ESO Very Large Telescope 54 spectra 53 positrons 53 astronomers 53 comet 53 meteoroids 53 infrared wavelengths 53 Betelgeuse 53 X ray Observatory 53 interferometry 53 luminosity 53 interstellar dust 53 electron volts 52 gravitational wave 52 starbursts 52 neutrinos 52 velocities 52 exoplanets 52 coronal mass ejection 52 gravitational waves 52 exoplanet 52 gamma ray 52 magnetic fields 52 cigar shaped 51 Saturn rings 51 quark gluon plasma 51 atomic nuclei 51 Milky Way galaxy 51 suns 51 J# [002] 51 photometric 51 torus 51 astrophysical