Related by context. Frequent words. (Click for all words.) 68 spectroscopic 66 elemental composition 64 metallicity 63 solar corona 63 radial velocity 62 photoluminescence 62 scanning electron microscopy 61 XMM Newton 61 interferometric 61 photometric 61 diffraction pattern 61 x ray diffraction 61 fluorescently labeled 61 spectra 61 VIRTIS 61 photometry 60 photometer 60 force microscopy AFM 60 morphologies 60 isotope ratios 60 spectrographs 60 nanosized 60 microstructural 60 exosphere 60 collimated 59 planetary nebulae 59 boron nitride 59 anisotropy 59 noctilucent clouds 59 crystallographic 59 infrared wavelength 59 protostars 59 dynamical 59 WFPC2 59 X ray emission 59 NICMOS 59 spectrometry 59 photochemistry 59 infrared spectroscopy 58 distant galaxies 58 ultraviolet wavelengths 58 confocal microscopy 58 abundances 58 photosphere 58 Galaxy Evolution 58 anisotropic 58 Spectrometers 58 tropospheric 58 uranium thorium 58 isotopic 58 active galactic nuclei 58 icy moons 58 transmission electron microscopy 58 sorption 58 noble gases 58 isotopic composition 57 spectral 57 WASP #b 57 X ray fluorescence 57 oxygen isotopes 57 fluorophores 57 electron density 57 FRET 57 coronal 57 interferometry 57 confocal microscope 57 optical coherence tomography OCT 57 planetary nebula 57 colorimetric 57 Hubble observations 57 microscopy techniques 56 spectroscopy 56 optical microscopy 56 submicron 56 CRISM 56 magnetization 56 protoplanetary disk 56 gravitational lens 56 astronomical objects 56 spectral signatures 56 interstellar dust 56 stellar nurseries 56 Cepheids 56 spectral imaging 56 visible wavelengths 56 astrophysical 56 quantitative measurements 56 substorm 56 nanocrystalline 56 Fig. 1A 56 ultracold 56 galaxy formation 56 dispersive 56 manganese oxide 56 biogeochemical 56 auroral 56 z = 56 radiative 56 solar nebula 55 PCR amplification 55 absorbance