Related by context. Frequent words. (Click for all words.) 68 brightness 66 luminous 60 radiance 56 luminance 55 reflectivity 55 supernovae 55 refraction 55 supernova 54 quasar 54 quasars 53 galaxies 53 starlight 53 illumination 53 spectral 53 nebula 53 corona 52 gamma rays 51 distant galaxies 51 shimmer 51 magnification 51 velocities 51 fluorescence 50 wavelengths 50 neutron star 50 color saturation 50 spectra 50 photons 50 magnetic fields 50 atoms 49 pixels 49 photon 49 gravitational 49 neutrons 49 cosmic 49 suns 49 neutrinos 49 particle 49 radiant 48 excitation 48 spatial resolution 48 pulsar 48 neutron stars 48 chromatic 48 Milky Way 47 exoplanets 47 loveliness 47 intensities 47 gamma ray 47 particles 47 fainter 47 sparkle 47 texture 47 galaxy 47 lightness 46 ambient light 46 nuclei 46 ultraviolet radiation 46 celestial bodies 46 amplitude 46 lux 46 color reproduction 46 cosmic rays 46 wavelength 46 magnetism 46 extrasolar planets 46 comet 46 ultraviolet 46 pulsars 46 electrical conductivity 46 cosmos 46 gamma ray bursts 46 outer layers 46 UV light 46 planets 46 ultraviolet light 45 general relativity 45 orbits 45 conductivity 45 subatomic particles 45 filaments 45 pixel 45 thermal conductivity 45 gravitational pull 45 shimmers 45 angular 45 astronomers 45 tonality 45 filament 45 sunspots 45 smoothness 44 sunlight 44 vivid colors 44 aperture 44 electron 44 geometrical 44 Milky Way galaxy 44 xenon 44 hydrogen atoms 44 tonal 44 comets 44 ionization