Related by context. Frequent words. (Click for all words.) 63 telescopes 62 Very Large Telescope 62 WM Keck Observatory 61 telescope 60 interferometer 57 spatial resolution 57 XMM Newton 57 spectroscopy 56 optical microscope 56 diffraction 56 spectroscopic 55 Hubble 55 Raman spectroscopy 55 JWST 55 astronomers 55 Space Telescope 55 CCDs 54 parallax 54 spectrograph 54 infrared wavelengths 54 CMOS sensors 54 optics 53 Telescope 53 imager 53 laser scanning 53 infrared 53 scanning electron microscope 52 microscopy 52 femtosecond 52 CCD camera 52 extrasolar planets 52 extrasolar planet 52 X ray diffraction 52 excimer laser 52 Hubble telescope 51 Advanced Camera 51 NASA Chandra 51 Hubble Space Telescope 51 X ray imaging 51 NASA Goddard 51 spectrometer 51 Spitzer Space Telescope 51 synchrotron 51 exoplanet 51 planet orbiting 51 CCD sensor 50 silicon photonics 50 electron microscopes 50 HiRISE 50 GOCE 50 Spectroscopy 50 WMAP 50 solar concentrator 50 fluorescence microscopy 50 laser pulses 50 imagers 49 quantum dot 49 magnification 49 electron microscopy 49 Spectrometer 49 planets orbiting 49 eyepiece 49 photolithography 49 Fluorescence 49 THEMIS 49 observatories 49 brightness 49 spectrometers 49 distant galaxies 49 Celestron 49 remote sensing 49 LIDAR 49 quasars 48 infrared imaging 48 Hubble Telescope 48 exoplanets 48 redshift 48 Telescopes 48 astrophysical 48 optical 48 microdisplay 48 Lidar 48 terahertz 48 electron microscope 48 gamma ray burst 48 spectra 48 nanofabrication 48 MESSENGER 48 NASA Cassini spacecraft 47 unaided eye 47 Astrophysical Journal 47 cosmic ray 47 astrophysicists 47 magnetic fields 47 infrared laser 47 LRO 47 photon 47 quantum dots 47 photodiodes 47 electro optic 47 computational methods