Related by context. Frequent words. (Click for all words.) 76 ESO Very Large Telescope 73 Very Large Telescope 71 XMM Newton 68 COROT 67 Spectrometer 65 Galaxy Evolution 65 spectroscopic 65 interferometer 64 WM Keck Observatory 64 interferometry 64 optical telescope 63 adaptive optics 63 Keck Observatory 63 OSIRIS 62 particle detector 62 optical telescopes 62 VLBA 62 Very Large Array 62 infrared telescope 62 telescope 61 Gemini Observatory 61 redshift 61 SPIRE 61 telescopes 61 microlensing 61 NASA Cassini 60 gravitational wave 60 solar corona 60 Space Telescope 60 attosecond 60 multispectral 60 SMOS 60 MARSIS 60 LIGO 60 NASA ESA Hubble 60 frequency comb 60 European Synchrotron Radiation 60 Hubble observations 59 NASA Chandra 59 Orion Nebula 59 Spitzer Space Telescope 59 X ray telescope 59 radiometer 59 CALIPSO 59 NICMOS 59 infrared wavelengths 59 planetary nebulae 59 HARPS 59 confocal 59 beamline 59 astronomical objects 59 visible wavelengths 59 synchrotron radiation 59 Crab Nebula 58 ESO 58 interplanetary spacecraft 58 astronomical observations 58 infrared 58 ionospheric 58 radar altimeter 58 THEMIS 58 Pan STARRS 58 spectroscopy 58 NASA Cassini spacecraft 58 Arecibo Observatory 58 distant galaxy 58 optical microscopy 58 CCD camera 57 Andromeda galaxy 57 spacecraft orbiting 57 Cassini Huygens 57 distant galaxies 57 Hinode 57 gravitational lensing 57 spectrometer 57 scanning tunneling microscope 57 star Gliese 57 Cancri 57 quasars 57 spectrometry 57 ESRF 57 CfA 57 unaided eye 57 Lick Observatory 57 astronomers 57 NASA Goddard 57 transmission electron microscope 57 supernova remnant 57 Astrophysicists 57 Garching Germany 57 CloudSat 57 extrasolar planet 57 LCLS 56 active galactic nuclei 56 HRSC 56 infrared mapping spectrometer 56 X ray Observatory 56 laser pulses 56 scanning electron microscope 56 confocal microscopy 56 NASA Kepler