Related by context. Frequent words. (Click for all words.) 61 accreting 60 supernova explosion 58 accretion disk 57 supernova remnant 57 pulsar 57 planetary nebula 56 supernova 56 ionized gas 56 active galactic nuclei 56 planet orbits 56 Eta Carinae 55 magnetar 54 supernova remnants 54 dwarf galaxy 54 neutron star 54 X ray emission 54 planet orbiting 54 Gamma ray bursts 54 globular cluster 53 interstellar medium 53 planetary nebulae 53 ionised 53 Crab Nebula 53 nebula 53 brown dwarf 53 Large Magellanic Cloud 53 galaxy 53 ejecta 53 nebulae 52 distant galaxy 52 Fomalhaut 52 supermassive black hole 52 Galaxy Evolution 52 supernova explosions 52 Andromeda galaxy 51 galaxy cluster 51 gamma ray burst 51 solar nebula 51 Phaethon 51 HD #b [002] 51 solar corona 51 Cancri 51 GRB # 50 star Gliese 50 observable universe 50 distant galaxies 50 ionize 50 quasar 50 neutron stars 50 colliding galaxies 50 Gamma rays 50 vaporised 50 spiral galaxies 50 supermassive black holes 50 gravitationally 50 interstellar dust 50 Milky Way Galaxy 49 globular clusters 49 comet tail 49 Betelgeuse 49 elliptical galaxies 49 Pulsars 49 Spitzer Space Telescope 49 galaxies 49 superhot 49 Hawking radiation 49 pulsars 49 supernovas 49 radial velocity 49 brown dwarfs 49 shorter wavelengths 49 Orion Nebula 48 subatomic particle 48 gamma ray bursts 48 celestial object 48 galaxy formation 48 gamma rays 48 constellation Perseus 48 silicates 48 subatomic particles 48 Kuiper belt 48 Gliese #g 48 fluorescing 48 spiral galaxy 48 X ray Observatory 48 Astrophysicists 48 atomic nuclei 48 La Silla Chile 48 Milky Way 48 redshift 47 Milky Way galaxy 47 Type Ia supernovae 47 XMM Newton 47 quasars 47 supernovae 47 gravitational attraction 47 outer layers 47 heliosheath 47 Cosmic rays 47 GRBs 47 extrasolar planet