Related by context. Frequent words. (Click for all words.) 56 thermonuclear 55 thermonuclear device 52 Gamma rays 51 Gamma ray bursts 51 thermonuclear weapons 50 Solar flares 50 Supernovae 49 WASP #b 49 kelvin 48 supernova explosions 48 Pokhran II 47 novae 47 substorm 47 colliders 46 Cosmologists 46 observable universe 46 kiloton 46 Pokharan 46 atomic 45 WIMPs 45 proton collisions 45 radial velocity 45 bunker busting 45 boson 45 Paul Dirac 45 particle collisions 45 Pokhran 45 stimulated emission 45 elemental composition 45 supernovas 45 ultraviolet wavelengths 45 fission 44 subatomic particle 44 interplanetary spacecraft 44 particle beam 44 magnetar 44 Einstein theories 44 noctilucent clouds 44 meteor showers 44 supernova explosion 44 nuclear fission 43 antiprotons 43 Type Ia supernovae 43 Higgs particle 43 Crab Nebula 43 Hawking radiation 43 shorter wavelengths 43 Cepheids 43 Leonid meteor shower 43 Eta Carinae 43 picosecond 43 electron volts 43 planet Uranus 43 aurorae 43 mini nukes 43 National Synchrotron Light 43 cosmic rays 43 photometry 43 astrophysical 42 Halley comet 42 CoRoT 42 National Ignition Facility 42 magnetic resonance spectroscopy 42 Geminid meteor shower 42 gamma ray burst 42 kilotons 42 GeV 42 antihydrogen 42 atom bomb 42 radioactive decay 42 solar corona 42 planet orbits 42 GRBs 42 protostar 42 intercontinental missile 42 thermite 42 perihelion 42 invisibility cloaks 42 geoid 42 neutrino 42 subatomic 42 powerful particle accelerator 42 COROT 42 atomic particles 42 positron 42 planetary nebulae 42 muon 41 Filippenko 41 galaxy formation 41 megaton 41 magnetars 41 CERN Large Hadron 41 subatomic particles 41 blindingly bright 41 alpha particles 41 photoluminescence 41 solar nebula 41 meteoroid 41 supernova 41 Prithvi missile 41 kiloton nuclear