Related by context. Frequent words. (Click for all words.) 56 Eta Carinae 54 distant galaxy 53 GRBs 52 supernova 52 planet orbiting 51 supernovas 51 supernova explosion 50 XMM Newton 50 Saturn rings 50 supernovae 50 gamma ray burst 49 quasar 49 dwarf galaxy 49 quasars 48 neutron stars 48 super Earths 48 galaxy clusters 48 supernova explosions 48 galaxy cluster 47 gamma ray bursts 47 neutrino 47 astronomers 47 ESO Very Large Telescope 46 redshift 46 pulsars 46 WMAP 46 cosmic microwave background 46 globular clusters 46 ejecta 46 neutron star 45 Saturn moons 45 brown dwarfs 45 extrasolar planet 45 pulsar 45 cosmologists 45 HD #b [002] 45 exoplanets 45 Orion Nebula 45 gravitational lensing 44 NASA Cassini spacecraft 44 extrasolar planets 44 dwarf galaxies 44 interferometry 44 spiral galaxy 44 planets orbiting 44 rocky planets 44 galaxies 44 Very Large Telescope 44 occultation 43 Iapetus 43 Spitzer Space Telescope 43 astrophysicists 43 Betelgeuse 42 X ray Observatory 42 comet 42 comet nucleus 42 supermassive black holes 42 nebulae 42 neutrinos 42 photons 42 distant galaxies 42 elliptical galaxies 42 NASA Chandra 42 atomic particles 42 luminosity 42 Astronomers 42 interstellar medium 42 optical telescopes 41 planets 41 gravitational waves 41 Milky Way galaxy 41 spiral galaxies 41 craters 41 Einstein theory 41 exoplanet 41 brown dwarf 41 cosmic rays 41 gamma rays 41 Large Magellanic Cloud 41 spectrograph 41 Milky Way Galaxy 41 comet Wild 41 nova 41 Big Bang 41 WM Keck Observatory 40 cometary 40 unaided eye 40 atomic nuclei 40 positrons 40 orbiting spacecraft 40 spectroscopic 40 cosmic ray 40 nebula 40 nuclei 40 terrestrial planets 40 astrophysical 40 Space Telescope 40 quark 40 interstellar dust 40 ringed planet 40 Tunguska