Related by context. Frequent words. (Click for all words.) 67 brightness 63 redshift 62 spectra 62 luminosity 61 photometric 61 X ray emission 59 XMM Newton 59 infrared wavelengths 59 GRBs 58 elliptical galaxies 58 abundances 58 distant galaxies 57 brown dwarfs 57 reflectance 57 planets orbiting 57 celestial objects 56 intensities 56 quasars 56 wavelengths 56 nebulae 56 spectral 56 Betelgeuse 56 Orion Nebula 56 luminance 55 unaided eye 55 spectroscopic 55 Eta Carinae 55 amplitudes 55 orbits 55 galaxy cluster 54 gamma ray burst 54 anisotropy 54 velocities 54 supernovae 54 distant galaxy 54 brown dwarf 54 galaxies 54 supernova remnant 54 laser pulses 54 gamma rays 54 reflectivity 54 globular clusters 53 ejecta 53 magnification 53 supernova explosion 53 HD #b [002] 53 starlight 53 comet nucleus 53 extrasolar planets 53 spiral galaxy 53 quasar 52 planet orbiting 52 optical telescopes 52 gravitational wave 52 spatial resolution 52 gravitational lensing 52 gamma ray bursts 52 ESO Very Large Telescope 52 nebula 52 gamma ray 52 magnetar 52 greyscale 52 Milky Way Galaxy 52 spiral galaxies 52 galaxy clusters 52 grayscale 51 supernovas 51 COROT 51 supernova explosions 51 supernova 51 Jupiter moons 51 Large Magellanic Cloud 51 galaxy 51 parallax 51 astrophysical 51 WMAP 51 interferometry 51 pulsations 51 exoplanets 51 pixels 50 infrared radiation 50 particle sizes 50 FRET 50 infrared 50 astronomers 50 neutron star 50 pulsars 50 extrasolar planet 50 wavelength 50 periodicity 50 magnetization 50 cosmic microwave background 50 Spitzer Space Telescope 50 chemical composition 49 exoplanet 49 shorter wavelength 49 magnetic fields 49 dwarf galaxies 49 luminous 49 occultation 49 multispectral