Related by context. Frequent words. (Click for all words.) 59 GRBs 59 X ray emission 58 distant galaxies 57 elliptical galaxies 57 magnetic fields 57 rocky planets 57 brown dwarfs 57 extrasolar planets 56 galaxy clusters 56 pulsars 56 quasars 56 HD #b [002] 56 XMM Newton 55 planets orbiting 55 planets 55 astronomical objects 55 terrestrial planets 55 quasar 55 infrared wavelengths 55 globular clusters 54 vortices 54 extrasolar planet 54 gravitational wave 54 gamma ray bursts 54 anisotropy 54 supernova explosion 54 Andromeda Galaxy 54 nebulae 54 galaxies 54 gravitational waves 53 supernovae 53 Orion Nebula 53 quark gluon plasma 53 astrophysical 53 exoplanets 53 optical telescopes 53 Saturn moons 53 astronomers 53 galaxy cluster 53 spiral galaxies 53 interstellar medium 52 supernova explosions 52 super Earths 52 hydroxyl 52 distant galaxy 52 dwarf galaxies 52 hot Jupiters 52 spectra 52 magnetar 52 silicates 52 Enceladus 52 dynamical 52 oscillations 52 gamma ray burst 52 wavelengths 52 abundances 52 earths 52 planet orbiting 52 spectroscopic 52 celestial bodies 52 Eta Carinae 51 pulsations 51 pulsar 51 organic molecules 51 geomagnetic storms 51 supernova remnant 51 substorms 51 supermassive black hole 51 unaided eye 51 cosmic rays 51 interstellar dust 51 molecules 51 brown dwarf 51 redshift 51 nebula 51 cosmic ray 51 COROT 51 gamma rays 51 supermassive black holes 51 sunspots 51 spacetime 51 Very Large Array 51 astronomical observations 51 neutrino 51 occultation 50 Saturn rings 50 high temperature superconductivity 50 supernovas 50 auroras 50 gravitational lensing 50 cosmologists 50 polar caps 50 neutron star 50 Saturn moon 50 Milky Way galaxy 50 celestial objects 50 neutron stars 50 dwarf galaxy 49 Milky Way Galaxy 49 interferometry 49 Milky Way