Related by context. Frequent words. (Click for all words.) 64 redshift 62 galaxy cluster 60 neutrons 60 quasar 60 protons 59 brown dwarfs 58 galaxy clusters 58 amplitudes 58 neutron star 58 infrared wavelengths 57 supermassive black hole 57 brown dwarf 57 TeV 57 photons 57 photon 57 positrons 56 cosmic ray 56 atomic nuclei 56 HD #b [002] 56 neutrinos 56 velocities 56 gamma rays 56 atoms 56 proton 56 distant galaxy 56 quasars 55 μm 55 wavelengths 55 magnetization 55 orbits 55 RHIC 55 particle accelerators 55 nuclei 55 neutrino 55 supermassive black holes 55 magnetic fields 55 dwarf galaxies 55 pulsars 54 supernovae 54 elliptical orbit 54 electron spin 54 cosmic rays 54 electron 54 laser pulses 54 excitation 54 supernova explosion 54 neutron stars 54 Milky Way Galaxy 54 globular clusters 54 trillion electron volts 54 proton beams 54 subatomic particles 54 galaxies 54 spacetime 53 general relativity 53 laser pulse 53 MPa 53 gamma ray burst 53 hydrogen atoms 53 pulsar 53 gamma ray bursts 53 luminosity 53 atomic particles 53 deuterium 53 radii 53 electrons 53 Milky Way galaxy 53 Saturn rings 53 exoplanets 52 gravitational waves 52 Higgs boson 52 hydrogen atom 52 spectra 52 nanometers 52 supernova 52 interstellar medium 52 Tevatron 52 radioactive decay 52 proton beam 52 oscillations 52 distant galaxies 52 conductance 52 Betelgeuse 52 Enceladus 51 qubit 51 spectroscopic 51 Gliese 51 particle accelerator 51 astrophysical 51 XMM Newton 51 angular momentum 51 millionths 51 Milky Way 50 interferometer 50 spiral galaxies 50 rocky planets 50 abundances 50 spiral galaxy 50 micrometer 50 dipole 50 extrasolar planets