Related by context. Frequent words. (Click for all words.) 49 GRBs 48 gravitational lensing 48 pulsars 47 XMM Newton 47 globular clusters 47 elliptical galaxies 47 supernova explosion 47 supernovae 46 supernova 46 distant galaxies 45 galaxy cluster 45 pulsar 45 astrophysicists 45 astronomers 44 gamma ray burst 44 physicists 44 Spitzer Space Telescope 44 Astrophysical Journal Letters 44 redshift 44 brown dwarfs 44 theoretical physicist 44 galaxies 43 astronomer 43 WMAP 43 dwarf galaxies 43 Astrophysical Journal 43 distant galaxy 43 quasars 43 quasar 43 gravitational waves 43 infrared wavelengths 42 gamma ray bursts 42 planet orbiting 42 Saturn rings 42 supernovas 42 occultation 42 astrophysical 42 HD #b [002] 41 biophysicist 41 X ray Observatory 41 cosmic rays 41 cosmic microwave background 41 Milky Way galaxy 41 physicist 41 interstellar dust 40 galaxy clusters 40 NASA Chandra 40 postdoctoral researcher 40 extrasolar planets 40 cosmologist 40 scanning electron microscope 40 sunspots 40 Very Large Telescope 40 Cassini 40 terrestrial planets 39 principal investigator 39 optical telescopes 39 planetary scientist 39 celestial objects 39 transmission electron microscope 39 cosmic ray 39 aurora 39 extrasolar planet 39 cosmologists 38 WM Keck Observatory 38 neutron stars 38 Astronomer 38 cometary 38 Physicist 38 exoplanets 38 comet 38 auroras 37 meteors 37 postdoctoral fellow 37 rocky planets 37 Astrophysics 37 Astronomers 37 Max Planck Institute 37 planets orbiting 37 Sedna 37 THEMIS 37 neutrino 37 Lowell Observatory 37 Astronomy 36 HiRISE 36 exoplanet 36 astrophysicist 36 moons 36 geochemist 36 comets 36 bioengineer 35 microstructures 35 planets 35 Space Telescope Science 35 cosmic dust 35 geophysicists 35 atmospheric scientist 35 spectrometers 35 geoscientist 35 geometrical 34 Space Telescope