Related by context. Frequent words. (Click for all words.) 60 Type Ia supernovae 58 spectroscopic 58 Galaxy Evolution 57 CfA 55 XMM Newton 54 astronomical objects 54 Hubble observations 54 Astrophysicist 54 supernova remnants 54 spectra 53 Gemini Observatory 53 LLNL 53 Fourier 53 supernova remnant 53 galaxy formation 52 spectroscopy 52 WMAP 52 COBE 52 NASA Chandra 52 interferometry 52 photometric 52 Keck Observatory 52 NASA Goddard 52 Astrophysicists 52 spectrometry 51 quasars 51 supernovae 51 planetary nebulae 51 astronomers 51 distant galaxies 51 active galactic nuclei 51 astronomer 51 numerical simulations 51 WM Keck Observatory 51 Spectroscopy 51 Niels Bohr Institute 51 THEMIS 51 Lick Observatory 50 neutron scattering 50 Garching Germany 50 LBNL 50 Gehrels 50 redshift 50 Raman spectroscopy 50 nebulae 50 NASA Cassini 50 NICMOS 50 gravitational wave 50 astronomical observations 50 astrophysical 50 Cassini imaging 50 crystallography 50 interferometer 50 solar corona 50 SDSS 50 infrared spectroscopy 49 globular clusters 49 COROT 49 quasar 49 NERSC 49 X ray crystallography 49 brown dwarfs 49 astrophysicists 49 microlensing 49 extrasolar planets 49 mathematical algorithm 49 spectral 49 Edwin Hubble 48 gravitational lensing 48 Planck 48 ESO Very Large Telescope 48 Pan STARRS 48 Space Telescope 48 Crab Nebula 48 Chandra X ray 48 Space Telescope Science 48 physicists 48 cosmologists 48 x ray crystallography 48 gamma ray 48 Caltech 48 HiRISE 48 computational methods 47 OGLE 47 cometary 47 Kepler 47 spectrometer 47 exoplanet 47 globular cluster 47 JILA 47 X ray emission 47 transmission electron microscopy 47 planetary scientist 47 European Synchrotron Radiation 47 exoplanets 47 CalTech 47 GRBs 47 astrobiologists 47 FRET 47 JEOL 47 theoretical physicists