Related by context. Frequent words. (Click for all words.) 67 supernovae 67 supernova explosions 65 astrophysical 63 X ray emission 63 supernovas 63 supernova explosion 61 magnetar 61 radioactive decay 61 interstellar medium 61 GRBs 60 cosmological 60 supernova 60 neutron stars 60 brown dwarfs 59 Eta Carinae 59 gamma ray bursts 59 dynamical 58 terrestrial planets 58 globular clusters 58 neutrino 58 galaxy clusters 57 ejecta 57 supermassive black holes 57 neutron star 57 astrophysicists 57 rocky planets 57 atomic nuclei 57 galaxies 57 high temperature superconductivity 57 dwarf galaxy 57 interstellar dust 56 quasars 56 elliptical galaxies 56 quasar 56 gravitational lensing 56 quark gluon plasma 56 gravitational wave 56 nebulae 56 dwarf galaxies 56 accreting 55 supersymmetry 55 gaseous 55 cometary 55 atomic nucleus 55 cosmic rays 55 gravitational waves 55 extrasolar planets 55 planetary 54 deuterium 54 planets 54 quantum gravity 54 hot Jupiters 54 magnetic fields 54 radiative 54 subatomic 54 Earth magnetosphere 54 comets 54 pulsars 54 gamma ray burst 54 spacetime 54 gravitational 54 super Earths 54 spectroscopic 53 cosmic 53 spiral galaxies 53 abundances 53 fermions 53 cosmology 53 cosmic ray 53 subatomic particles 53 XMM Newton 53 gravitationally 53 superfluid 53 particle physics 53 magnetosphere 53 extrasolar planet 53 coronal mass ejections 53 atmospheric chemistry 53 astrophysics 53 CMEs 53 general relativity 53 cosmic microwave background 53 redshift 53 nebula 53 nucleation 53 gamma rays 52 nuclei 52 Saturn rings 52 distant galaxies 52 silicates 52 exoplanet 52 interstellar 52 theoretical calculations 52 brown dwarf 52 solar flares 52 astronomers 52 electromagnetism 52 planet orbiting 52 chirality 52 Enceladus 52 superconductivity