Related by context. Frequent words. (Click for all words.) 65 Very Large Telescope 63 Subaru Telescope 63 XMM Newton 63 Keck telescope 63 ESO Very Large Telescope 63 astronomical telescope 62 optical telescopes 62 spectrographs 61 Southern Observatory ESO 61 interferometric 61 microlensing 61 InSAR 60 VIRTIS 60 particle detectors 60 LOFAR 59 Keck Observatory 59 fluorescence microscope 59 photometer 59 exosphere 59 radial velocity 59 Mauna Kea Hawaii 59 interferometers 58 solar corona 58 geoid 58 La Silla Chile 58 spectroscopic 58 gravitational lens 58 spacecraft orbiting 58 WM Keck Observatory 58 Paranal 57 active galactic nuclei 57 spaceborne 57 optical telescope 57 photosphere 57 Spectrometer 57 infrared telescope 57 Cepheids 57 coronagraph 56 COROT 56 extrasolar 56 spectral imaging 56 astronomical objects 56 magnetars 56 astronomers 56 Hubble observations 56 supercomputer simulations 56 interferometer 56 HiRISE camera 56 astronomical observations 56 Wilkinson Microwave Anisotropy Probe 56 NASA Chandra 56 interplanetary spacecraft 56 Mini SAR 55 visible wavelengths 55 ultraviolet wavelengths 55 redshifts 55 interferometry 55 National Astronomical Observatory 55 gaseous planets 55 Spectrometers 55 VLBI 55 scanning tunneling microscope 55 Extraterrestrial Physics 55 optical wavelengths 55 telescopes 55 WFC3 55 particle detector 55 planetary nebulae 55 elemental composition 54 spatial scales 54 Adaptive Optics 54 infrared wavelength 54 Spitzer Space Telescope 54 Earthlike 54 Galaxy Evolution 54 Galileo spacecraft 54 tropospheric 54 X ray emission 54 HARPS 54 infrared spectroscopy 54 Siding Spring 54 shorter wavelengths 54 photometry 54 multispectral imaging 54 multispectral 54 gravitational wave 54 noctilucent clouds 54 lunar craters 53 TrES 53 gravitational lensing 53 Gemini Observatory 53 MARSIS 53 bathymetry 53 photoluminescence 53 force microscopy AFM 53 panchromatic 53 spectrometry 53 optical microscopy 53 frequency comb 53 OGLE 53 ionospheric