Related by context. Frequent words. (Click for all words.) 49 quark gluon plasma 47 cosmologists 47 ionized gas 46 HD #b [002] 46 Kuiper belt 45 planetary nebulae 45 Bose Einstein condensate 45 globular clusters 45 planetary nebula 44 supernova remnant 44 astrophysicists 44 Crab Nebula 44 starbursts 43 observable universe 43 Gliese #g 43 globular cluster 43 magnetar 43 cosmic microwave background 43 comet 43 cosmic ray 43 solar nebula 43 brown dwarf 43 astrophysical 43 suns 42 antimatter 42 Gamma ray bursts 42 accretion disk 42 supernova explosions 42 comet nucleus 42 brown dwarfs 42 quasar 42 supernova explosion 42 elliptical galaxies 42 GRB # 42 Cabeus crater 41 Astrophysicists 41 quanta 41 Halley comet 41 superhot 41 X ray emission 41 galaxy clusters 41 planetoid 41 galaxy formation 40 cigar shaped 40 spacetime 40 molten 40 distant galaxy 40 extrasolar planet 40 FORUMS Talk 40 planet orbits 40 GRBs 40 4 chars 40 WIMPs 40 rocky planets 40 coronal mass ejection 40 atomic nucleus 40 neutron stars 40 neutron star 40 quasars 40 orbiting 40 RHIC 39 supernova 39 astronomer 39 celestial object 39 galaxy cluster 39 coin 39 astronomers 39 Comet Tempel 1 39 gamma ray burst 39 comet dust 39 saucer shaped 39 meteoroid 39 subatomic particle 39 neutrino 39 accreting 39 moon 39 GeV 39 atomic particles 39 Jupiter Saturn Uranus 39 interstellar dust 39 ice cube 39 Fomalhaut 39 lunar soil 39 heliosheath 39 dwarf galaxies 39 physicists 38 Kepler telescope 38 Big Bang 38 asteroid 38 meteor 38 super Earths 38 corona 38 gravitational attraction 38 earths 38 Big Bang theory 38 astronomical 38 Type Ia supernovae 38 positrons 38 habitable planets 38 butter melts 38 particle beam