Related by context. Frequent words. (Click for all words.) 57 quasar 56 supernovae 56 quasars 55 Milky Way galaxy 55 gamma ray burst 55 planets orbiting 55 galaxies 55 galaxy 54 brown dwarf 54 neutron star 54 extrasolar planets 54 pulsars 54 nebula 53 redder 53 supernova 53 Milky Way 53 redshift 53 distant galaxies 53 pulsar 53 planets 52 supermassive black hole 52 gamma ray bursts 52 exoplanets 51 brown dwarfs 51 exoplanet 51 rocky planets 50 supermassive black holes 50 orbits 50 infrared wavelengths 50 gamma rays 49 Gliese 49 galaxy clusters 49 neutron stars 48 suns 48 gamma ray 48 supernovas 48 corona 47 astronomers 47 infrared radiation 47 gravitational waves 47 luminosity 47 sunspot 47 faint 46 Sedna 46 comet 46 bluer 46 dimmer 46 starlight 45 spectra 45 Saturn rings 45 orbiting 45 asteroid belt 45 Very Large Telescope 45 galactic 45 moons 44 neutrino 44 celestial objects 44 Pleiades 44 Spitzer Space Telescope 44 planetary 44 bluish 44 orbited 44 louder 44 constellation 44 Solar System 44 Enceladus 44 cosmic microwave background 43 Kuiper Belt 43 Uranus 43 outer layers 43 GRB 43 Astronomers 43 Andromeda 42 comets 42 magnetic fields 42 sunspots 42 neutrinos 42 asteroids 42 elliptical orbit 42 paler 42 Pluto 42 interstellar space 42 aurora 42 Arcturus 42 wavelengths 42 cosmic rays 41 habitable zone 41 solar flares 41 luminous 41 reddish 41 cosmic 41 filaments 41 Halley Comet 40 brighter 40 ellipse 40 astrophysicists 40 UB# [003] 40 Charon 40 dim 40 magnification 40 yellowish