Related by context. Frequent words. (Click for all words.) 67 elemental composition 67 spectroscopic 65 VIRTIS 64 radial velocity 64 Hubble observations 63 Cepheids 63 photometry 62 planetary nebulae 62 interferometric 61 spectrographs 61 redshifts 61 spectra 61 photometer 61 ultraviolet wavelengths 61 electron density 61 galaxy formation 60 X ray emission 60 photoluminescence 60 photometric 60 solar corona 60 extrasolar planet 60 scanning electron microscopy 60 isotope ratios 60 XMM Newton 60 infrared spectroscopy 60 FRET 59 spectrometry 59 abundances 59 z = 59 WASP #b 59 microlensing 59 fluorescing 59 anisotropy 59 Fig. 1A 59 magnetic reconnection 59 crystallographic 58 planet orbiting 58 optical coherence tomography OCT 58 redshift 58 COROT 58 Keck telescope 58 X ray diffraction 58 interferometry 58 boson 57 isotopic 57 auroral 57 morphologies 57 Hawking radiation 57 spectroscopy 57 Type Ia supernovae 57 spectral 57 substorm 57 quantitative measurements 57 NICMOS 57 isotopic composition 57 gravitational wave 57 WIMPs 57 GRBs 57 colorimetric 57 Eta Carinae 56 planets circling 56 elliptical galaxies 56 optical wavelengths 56 Galaxy Evolution 56 CoRoT 56 ionisation 56 spectral signature 56 ESO Very Large Telescope 56 nanomechanical 56 immunohistochemical 56 transmission electron microscopy 56 X ray fluorescence 56 optical microscopy 56 mass spectroscopy 56 novae 56 microRNA expression 56 planets orbiting 56 oxygen isotopes 56 protostar 56 fluorophores 56 protoplanetary disk 56 globular cluster 55 SIRTF 55 metabolomic 55 confocal microscopy 55 Earthlike 55 gamma ray burst 55 magnetization 55 galaxy cluster 55 absorbance 55 Higgs particle 55 planetary nebula 55 isotropic 55 histopathological 55 infrared spectrometer 55 active galactic nuclei 55 Mass spectrometry 55 Galileo spacecraft 55 Computer simulations 55 tropospheric 55 baryons