Related by context. Frequent words. (Click for all words.) 62 starburst 62 nebulae 57 galaxies 56 X ray emission 56 Orion Nebula 55 nebula 55 quasars 54 GRBs 54 distant galaxies 54 supernova explosions 54 supernovae 53 spiral galaxies 53 starlight 53 globular clusters 52 supernova explosion 51 elliptical galaxies 51 halos 51 suns 51 supermassive black hole 51 supernovas 51 distant galaxy 51 galaxy 51 whorls 51 orbs 51 supermassive black holes 50 quasar 50 coronal mass ejections 50 cosmic 50 neutron stars 50 moons 50 supernova remnant 50 spacetime 49 dwarf galaxy 49 laser beams 49 spherical 49 Milky Way 49 spiral galaxy 49 magnetar 49 Eta Carinae 49 Saturn moons 49 planets 49 supernova 49 galaxy clusters 49 blobs 49 interstellar dust 49 astrophysical 49 comets 48 celestial objects 48 vortices 48 neutron star 48 aurora 48 Leonids 48 luminosity 48 globular 48 Milky Way Galaxy 48 vortexes 48 brown dwarfs 48 Milky Way galaxy 47 iridescence 47 Saturn rings 47 solar flares 47 dwarf galaxies 47 gamma ray bursts 47 bluish 47 ejecta 47 gamma ray burst 46 cosmic microwave background 46 galaxy cluster 46 auroras 46 reddish orange 46 gravitational waves 46 florescent 46 magnetosphere 46 luminous 46 pulsations 46 cosmos 46 fireballs 46 nuclei 46 Sunspots 46 galactic 46 XMM Newton 46 gamma rays 45 neon colors 45 redshift 45 earths 45 interstellar medium 45 magnetic fields 45 multicolored 45 brown dwarf 45 outer planets 45 quark gluon plasma 45 strobes 45 hot Jupiters 45 constellations 45 crystals 45 unaided eye 45 symmetries 45 tiger stripes 44 Large Magellanic Cloud 44 accreting 44 atoms