Related by context. Frequent words. (Click for all words.) 58 Spectrometers 58 spectrographs 56 photometer 55 exosphere 54 elemental composition 54 extrasolar 54 coronagraph 53 Mauna Kea Hawaii 52 Diviner 52 force microscopy AFM 52 VIRTIS 52 astronomical objects 52 photoluminescence 52 infrared spectroscopy 52 laser altimeter 52 Spectrometer 52 ionize 52 infrared mapping spectrometer 51 interstellar clouds 51 spectra 51 radial velocity 51 interplanetary spacecraft 51 Cassini imaging 51 spectroscopic 51 spectrometer 51 solar corona 51 X ray telescopes 51 interferometric 51 spectral signature 51 ultraviolet wavelengths 51 active galactic nuclei 51 X ray fluorescence 51 optical wavelengths 51 Gamma ray bursts 50 Near Infrared 50 Spectroscopy 50 paramagnetic 50 noctilucent clouds 50 electron density 50 fluorescing 50 infrared wavelength 50 photochemistry 50 X ray emission 50 spaceborne 50 ionised 50 planetary nebulae 50 infrared spectrometer 50 spectrometers 50 microwave frequencies 49 gravitational wave 49 XMM Newton 49 Cosmic rays 49 Cepheids 49 circular polarization 49 electromagnetic EM 49 particle detectors 49 photosphere 49 spectrometry 49 interstellar dust 49 carbonate minerals 49 NASA Cassini 49 tropospheric 49 helium atoms 49 magnetars 49 infrared wavelengths 49 Raman scattering 49 infrared imagery 49 radiometer 49 collimated 49 near infrared NIR 49 scanning electron microscopy 49 Mini SAR 48 nanosized 48 scanning electron microscope 48 gravitational lens 48 photometry 48 Wilkinson Microwave Anisotropy Probe 48 extrasolar planet 48 Galaxy Evolution 48 magnetic fields 48 nanobubbles 48 submillimeter 48 diffraction pattern 48 spectroscopy 48 polar craters 48 silicates 48 infrared 48 upper troposphere 48 Keck telescope 48 infrared radiation 48 Martian dust 48 supernova remnant 47 lunar craters 47 ejecta 47 noble gases 47 Magnetometer 47 cosmic particles 47 ionospheric 47 ESO Very Large Telescope 47 sorption 47 astronomical telescope