Related by context. Frequent words. (Click for all words.) 61 SIRTF 60 spectrographs 60 interferometric 60 radial velocity 60 photometer 59 gravitational lens 59 XMM Newton 58 frequency comb 58 interplanetary spacecraft 58 VIRTIS 58 ultraviolet wavelengths 57 interstellar clouds 57 diffraction pattern 56 Eagle Nebula 56 spectroscopic 56 force microscopy AFM 56 Spectrometers 56 protoplanetary disks 56 Galaxy Evolution 56 Galileo spacecraft 56 noctilucent clouds 55 plasmon 55 planetary nebulae 55 photosphere 55 protostar 55 nanoporous 55 photoluminescence 55 Orion Nebula 55 astronomical telescope 55 protostars 55 confocal microscope 55 exosphere 55 fluorescently labeled 55 Spitzer Space Telescope 55 protoplanetary disk 55 nanobubbles 55 interferometers 54 NASA Cassini 54 fluorescent molecules 54 Subaru Telescope 54 active galactic nuclei 54 magnetar 54 ESO Very Large Telescope 54 Cepheids 54 ultraviolet UV light 54 superlens 54 Keck telescope 54 radioactive decay 54 distant galaxies 54 confocal 54 Diviner 54 nanosized 54 ultracold 54 geoid 54 scanning tunneling microscope 54 diffracted 54 X ray Observatory 54 photometry 54 colliding galaxies 54 accretion disk 53 fluorophores 53 comet tail 53 HiRISE camera 53 WASP #b 53 interferometry 53 Raman spectroscopy 53 Viking landers 53 gamma ray burst 53 interferometer 53 muon 53 visible wavelengths 53 Voyager spacecraft 53 crystallographic 53 elemental composition 53 Exoplanet 53 paramagnetic 53 particle detectors 53 Nanotube 53 photonic crystal 53 confocal microscopy 53 NASA Stardust spacecraft 53 lunar craters 53 NASA Chandra 52 comet nucleus 52 NASA Cassini spacecraft 52 ultraviolet light 52 Spectrometer 52 magnetic particle 52 Adaptive Optics 52 metallicity 52 boron nitride 52 optical wavelengths 52 Wilkinson Microwave Anisotropy Probe 52 planetesimals 52 interstellar medium 52 Saturn moon Enceladus 52 subatomic particle 52 Cassini orbiter 52 spectrograph 52 Carina Nebula 52 NASA ESA Hubble