Related by context. Frequent words. (Click for all words.) 57 Astrophysical Journal 55 X ray emission 54 Astrophysical Journal Letters 54 Eta Carinae 54 HD #b [002] 54 supernova explosions 54 GRBs 53 astrophysical 53 supernovae 53 supernova 52 planetary scientist 52 gravitational lensing 52 physicist 52 astrophysicists 51 astronomer 51 dwarf galaxy 51 dwarf galaxies 51 gamma ray burst 51 theoretical physicist 51 extrasolar planet 51 supernova explosion 51 elliptical galaxies 51 quasars 50 XMM Newton 50 neutron stars 50 brown dwarfs 50 ejecta 50 journal Geophysical Research 50 planet orbiting 50 supernovas 49 physicists 49 galaxy clusters 49 Nano Letters 49 exoplanets 49 quasar 49 redshift 49 Harvard Smithsonian 49 theoretical physicists 49 galaxy cluster 49 Review Letters 49 extrasolar planets 49 exoplanet 49 Astrophysics 49 distant galaxy 49 JILA 49 globular clusters 49 astronomers 49 pulsars 49 astrophysics 49 RHIC 48 gravitationally 48 supermassive black holes 48 Physical Review 48 WM Keck Observatory 48 cosmologist 48 cosmologists 48 gamma ray bursts 47 astrobiologist 47 geochemist 47 planetary sciences 47 spectroscopic 47 Physics 47 NASA Chandra 47 spiral galaxies 47 Kavli Institute 46 adaptive optics 46 rocky planets 46 X ray Observatory 46 gamma rays 46 planetary science 46 journal Geology 46 Johannes Kepler 46 brown dwarf 46 Orion Nebula 46 galaxies 46 neutron star 46 Milky Way Galaxy 46 Cosmology 46 gravitational waves 46 Astronomer 46 superfluid 45 Space Telescope 45 journal Physical 45 Novoselov 45 Betelgeuse 45 interstellar medium 45 astrophysicist 45 Applied Physics Letters 45 terrestrial planets 45 spectroscopy 45 Royal Astronomical Society 45 Nuclear Physics 45 Saturn rings 45 optical telescopes 45 neutrino 45 cosmic rays 45 positrons 45 infrared wavelengths 45 Astrobiology 45 Feynman 45 planets orbiting