Related by context. All words. (Click for frequent words.) 68 ESA CryoSat 67 laser altimeter 67 Cryosat 65 NASA ICESat 65 CryoSat 64 Elevation Satellite 64 CryoSat mission 64 SMOS 63 Orbiter LRO 63 CloudSat 63 radar altimetry 62 Envisat 62 GOCE 61 IceBridge 61 ESA Envisat satellite 61 ESA ERS 61 Landsat satellites 61 Tropical Rainfall Measuring 61 CALIPSO 61 Elevation Satellite ICESat 60 APXS 60 radar altimeter 60 Titan flybys 60 Orbiter MRO 60 MARSIS 60 polarimetric 60 Envisat satellites 60 TanDEM X 60 Aeronomy 59 altimetry 59 Mission TRMM 59 ESA Envisat 59 MetOp 59 Landsat satellite 59 Advanced Microwave Scanning 59 Ocean Salinity SMOS 59 ESA SMART 59 LRO spacecraft 59 laser altimetry 58 Lunar Reconnaissance Orbiter LRO 58 SeaWiFS 58 SMOS mission 58 Shuttle Radar Topography 58 EPOCh 58 Ocean Salinity 58 Ulysses spacecraft 58 LISA Pathfinder 58 NuSTAR 58 HIAPER 58 Oceansat 58 situ measurements 57 Total Ozone Mapping 57 UAVSAR 57 QuikSCAT 57 NASA COBE satellite 57 Geoscience Laser Altimeter 57 SCISAT 57 SCIAMACHY 57 NASA THEMIS 57 Climate Experiment GRACE 57 Mission SRTM 57 polar orbiting satellites 57 NASA LCROSS 57 Landsat 57 Envisat satellite 57 Viking Lander 57 cryosphere 57 Instrument OMI 57 Mission TRMM satellite 57 NASA EPOXI mission 57 RADARSAT 57 Envisat ASAR 57 penetrating radar 57 GOES N 57 ESA Planck 56 Aqua satellite 56 KAGUYA 56 spaceborne 56 EPOXI 56 GPS IIF 56 InSAR 56 GOSAT 56 Mössbauer 56 geoid 56 ENVISAT 56 WMAP satellite 56 Interior Laboratory GRAIL 56 SIRTF 56 Synthetic Aperture Radar 56 SIRAL 56 neutron spectrometer 56 Antarctica EPICA 56 satellite altimeters 56 Wilkinson Microwave Anisotropy Probe 56 NASA Wilkinson Microwave 56 Herschel telescope 56 Hubble Space Telescope HST 56 Landsat Data 56 LRO 55 VIRTIS 55 Rosetta spacecraft 55 Lunar Orbiter 55 Resourcesat 55 OSTM Jason 2 55 Infrared Pathfinder Satellite 55 Orbiter spacecraft 55 Proba 2 55 CALIPSO satellites 55 orbiting observatories 55 NROL 55 THEMIS 55 Kepler spacecraft 55 Mesosphere 55 NEOSSat 55 TerraSAR X 55 polarimetry 55 NASA Tropical Rainfall 55 COROT 55 Ozone Monitoring 55 Mars Reconnaissance Orbiter MRO 55 Stardust NExT 55 Convection Rotation 55 Mars Reconnaissance Orbiter 54 ESA Rosetta 54 LAGEOS 54 Global Precipitation Measurement 54 Diviner 54 Rosetta orbiter 54 NASA QuikScat satellite 54 Meteosat 54 Spectrograph 54 NASA Cassini spacecraft 54 SPICAM 54 radiosondes 54 NASA Lunar Reconnaissance 54 EPOXI mission 54 WFC3 54 hyperspectral imager 54 Solar Dynamics Observatory 54 Cloud Aerosol Lidar 54 orbiting gamma ray 54 Spectroradiometer 54 radio occultation 54 Mars Surveyor 54 radar altimeters 54 DigitalGlobe WorldView 54 THEMIS mission 54 Mars Pathfinder lander 54 gamma ray spectrometer 54 GloPac 54 Cassini flyby 54 Earth orbiting satellites 54 satellite altimetry 54 ADM Aeolus 54 Mini SAR 54 spectrographic 54 NASAs 54 Mercury flyby 54 Planck satellite 54 airglow 54 BepiColombo 54 AMIE camera 54 gradiometer 54 Mars landers 54 SIM PlanetQuest 54 HiRISE camera aboard 54 HiRISE camera 54 HRSC 54 SINFONI 54 interferometric synthetic aperture radar 54 lunar orbiters 54 AERONET 53 Proba 53 martian meteorites 53 Earth Observing 53 spacecraft orbited 53 NASA rovers Spirit 53 Orbiting Carbon Observatory OCO 53 Infrared Astronomy 53 QuickBird 53 aboard ESA Envisat 53 astrometry 53 Nasa Mars Reconnaissance 53 infrared telescopes 53 RXTE 53 Foton M2 53 Mars Climate Sounder 53 GOCE satellite 53 scatterometer 53 NASA Stratospheric Observatory 53 EarthCARE 53 Climate Experiment 53 Curiosity rover 53 Lunar Orbiter Laser Altimeter 53 radiometer 53 NASA Cassini 53 IceCube 53 TDRS K 53 AATSR 53 infrared astronomy 53 MERIS 53 Epoxi 53 Interferometer 53 RADARSAT 2 53 THEMIS satellites 53 telescopic observations 53 Mars Pathfinder 53 multi decadal 53 OSIRIS REx 53 orbiting Saturn 53 Enceladus flyby 53 NEOWISE 53 Composite Infrared Spectrometer 53 Mars Orbiter 53 Lunar Prospector 53 polar orbiting 53 Infrared Astronomical Satellite 53 AKARI 53 lidar 53 Servicing Mission 53 Global Precipitation Climatology 53 NOAA GOES 53 Synthetic Aperture Radar SAR 53 Galileo spacecraft 52 astronomical observations 52 Imaging Spectrometer MERIS 52 TRMM satellite 52 SMOS Soil Moisture 52 SRTM 52 DISR 52 Jupiter flyby 52 Webb Telescope 52 Advanced Synthetic Aperture 52 Gravity Recovery 52 AMSR E 52 Anisotropy Probe 52 Lunokhod 52 Huygens Probe 52 FORMOSAT 52 Titan flyby 52 OMPS 52 IceCube Neutrino Observatory 52 Observatory SDO 52 GOES O 52 ChemCam 52 NASA Cosmic Background 52 Huygens descent 52 Foton M3 52 IFSAR 52 austral summer 52 MetOp satellite 52 Mars Color Imager 52 Kepler Mission 52 Landsat imagery 52 GRACE satellites 52 Metop 52 Orbiting Carbon Observatory 52 orbiting spacecraft 52 STORRM 52 Polar Regions 52 OrbView 52 Airborne Topographic Mapper 52 Cartosat 52 Infrared Astronomy SOFIA 52 NSIDC 52 astrometric 52 THEMIS Image 52 LADEE 52 Soil Moisture 52 Velicogna 52 Reflection Radiometer 52 ESO VLT 52 AMASE 52 TDRSS 52 Milstar satellites 52 NEAR Shoemaker 52 NASA Moon Mineralogy 52 Express orbiter 52 SBSS satellite 52 axial tilt 52 Area Telescope LAT 52 TRMM 52 DigitalGlobe WorldView 2 52 NASA Landsat 52 planetary Transits 52 interferograms 52 Philae lander 52 Compton Gamma Ray 52 Alpha Particle 52 ALOS 52 NASA Mars Odyssey 52 ESA Cluster 52 GPS 2R 52 Cargo Launch Vehicle 52 UKIRT 52 Galileo satellites 51 ESO telescopes 51 GLAST spacecraft 51 Jupiter Icy Moons 51 Cosmic Origins Spectrograph 51 High Resolution Imaging 51 subglacial lakes 51 WISE telescope 51 GIOVE B 51 Remote sensing 51 NASA Stardust spacecraft 51 Quickbird 51 bathymetric 51 Helioseismic 51 Anisotropy Probe WMAP 51 Astrosat 51 synthetic aperture radar 51 Gravity Probe B 51 Kiruna Sweden 51 onboard Chandrayaan 51 Cosmic Background Explorer 51 spacecraft Chandrayaan 1 51 Phobos Grunt 51 Mars CRISM 51 COSMO SkyMed 51 Radar ASAR instrument 51 irregularly shaped asteroid 51 STEREO spacecraft 51 Mars orbiting spacecraft 51 NASA Aqua 51 Ranging spacecraft 51 GALEX 51 GPS IIR M 51 Space Telescope GLAST 51 Michael Studinger 51 RPWS 51 telescope atop Mauna 51 ESA Herschel 51 Moderate Resolution Imaging 51 CReSIS 51 Interferometric Synthetic Aperture Radar 51 Diviner instrument 51 SAR interferometry 51 NASA Mars Orbiter 51 Moon Mineralogy Mapper 51 Spectrometer 51 Continuity Mission LDCM 51 Minotaur IV 51 observing satellites 51 entered lunar orbit 51 HiRISE 51 Shallow Radar 51 O OREOS 51 Orbiter 51 Helios 2B 51 LDCM 51 SDSS II 51 ocean salinity 51 airborne particles affect 51 ESA Mars 51 orbiting Hubble Space Telescope 51 equatorial orbit 51 New Horizons spacecraft 51 X ray telescopes 51 Mars Orbiter Camera 51 X ray spectrometer 51 glacial interglacial 51 Herschel Space 51 glacial cycles 51 subglacial 51 Yaogan 51 Globalstar constellation 51 albedo feedback 51 twin rover Opportunity 51 Enceladus flybys 51 EVLA 51 Measuring Mission TRMM 51 Chandrayan 51 geosynchronous satellites 51 Milstar II 51 Synthetic Aperture 51 NASA CloudSat 50 IKONOS 50 thermal infrared 50 paleoclimatic 50 Imaging Spectroradiometer 50 SPIRE instrument 50 Cometary 50 MTSAT 50 Earth Observation Programmes 50 Cartosat 2A 50 Satellites GOES 50 iceberg calving 50 Cassini Huygens 50 Fermi Gamma ray 50 Mossbauer 50 CRISM 50 Envisat Advanced Synthetic Aperture 50 Regolith 50 geosynchronous 50 lidar instrument 50 remotely sensed 50 microscopic imager 50 XMM Newton 50 Lunar Crater 50 polar plateau 50 Comet Hartley 50 Cosmic Background Explorer COBE 50 infrared observatory 50 Uninhabited Aerial Vehicle 50 WGS Block 50 QuickBird satellite 50 radiometric measurements 50 RISAT 50 Hubble Servicing 50 cometary 50 NASA rovers 50 ESA Huygens probe 50 Moon Mineralogy Mapper M3 50 Constellation Observing 50 QQ# 50 Thermal Emission Spectrometer 50 vegetation greenness 50 Planck observatory 50 JWST 50 orbiting Mars 50 Wallops Island Va. 50 NASA Atmospheric Infrared 50 Planetary Fourier Spectrometer PFS 50 Meteorological Satellite 50 Churyumov Gerasimenko 50 Planetary Transits 50 Jupiter moons Europa 50 Last Glacial Maximum 50 C1XS 50 QuikScat 50 Decadal Survey 50 Jay Zwally 50 Chandrayaan 50 Explorer WISE 50 Imaging Spectroradiometer MODIS instrument 50 flyby 50 satellites orbiting Earth 50 mantle convection 50 Solar Backscatter Ultraviolet 50 Deep Impact flyby spacecraft 50 Huygens mission 50 CBERS 2B 50 lunar topography 50 Jules Verne ATV 50 orbiting telescope 50 Ultraviolet Imaging Spectrograph 50 Surface Temperature 50 STSS satellites 50 Earth Observation 50 STSS Demo 50 LROC 50 Voyager spacecraft 50 NASA Infrared Telescope 50 interferogram 50 detect gravitational waves 50 noctilucent clouds 50 Esrange 50 HARPS spectrograph attached 50 FORCAST 50 Mars Odyssey orbiter 50 orbiting telescopes 50 CryoSat satellite 50 IPY 50 remote sensing satellite Resourcesat 50 meteorological satellites 50 Mars rovers Spirit 50 CARTOSAT 50 multibeam 50 Deep Impact eXtended Investigation 50 spectrographs 50 solar irradiance 50 Hubble observations 50 Resourcesat 2 50 infrared telescope 50 orthorectified 50 AMPERE 50 Moessbauer spectrometer 50 TDRS 50 Relations Observatory STEREO 50 Ranging MESSENGER spacecraft 50 Imaging Spectrometer 50 GOES R 50 lunar missions 50 Cosmic Vision 50 Ocean Surface Topography 50 Near Infrared Camera 50 Operation IceBridge 50 Stratellite 50 celestial observations 50 NASA WMAP 50 SBIRS GEO 50 Profiler Suite OMPS 50 Smos 50 moon permanently shadowed 50 Ocean Observatories Initiative 50 JIMO 50 GNSS receivers 49 decadal 49 NEEMO 49 Orbital Express 49 TOPEX Poseidon 49 Mars orbiter 49 unmanned lunar orbiter 49 Heterodyne Instrument 49 INSAT 3D 49 HiRISE image 49 scientist Bernard Foing 49 sonde 49 Miniature Synthetic Aperture Radar 49 Mössbauer spectrometer 49 Security GMES 49 OMEGA instrument 49 Shackleton crater 49 Mars Orbiter Laser Altimeter 49 Nasa spacecraft 49 CloudSat radar 49 Solar TErrestrial RElations Observatory 49 tropospheric 49 Rignot 49 Gamma ray Large 49 aerosol measurements 49 Cosmic Origins Spectrograph COS 49 planetary missions 49 comet flyby 49 Lunar Reconnaissance Orbiter 49 Keck Interferometer 49 Context Camera 49 EPOXI spacecraft 49 probe Chang'e 49 Microscopic Imager 49 Scambos 49 WISE mapped 49 Mars Odyssey spacecraft 49 Hinode spacecraft 49 NASA Voyager spacecraft 49 measurements 49 meter diametre 49 Solar Orbiter 49 Radar ASAR 49 WAIS Divide 49 Lidar 49 Polar orbiting Operational 49 microwave radiometers 49 ESA XMM Newton 49 Transantarctic Mountains 49 interferometer 49 Global Surveyor 49 Viking landers 49 Molnia 49 HARPS spectrograph 49 ROCSAT 2 49 Keck telescopes 49 Rosetta comet chaser 49 Infrared Astronomical Satellite IRAS 49 Marsis 49 Chang'eI 49 NASA Orbiting Carbon 49 remote sensing satellites 49 NDVI 49 Chandrayaan II 49 DEIMOS 49 SDSS III 49 Planck spacecraft 49 remote sensing 49 mission Chandrayaan 49 bathymetry 49 dimensional atlas 49 orbiting observatory 49 WorldView 49 ICESCAPE 49 Hubble Space 49 NASA Far Ultraviolet 49 Yinghuo 1 49 Descent Imager Spectral Radiometer 49 Discovery STS 49 stellar occultations 49 Gamburtsev 49 LORRI 49 MARSIS radar 49 Mars orbiters 49 comet nuclei 49 Skynet 5C 49 DMSP F# 49 Saturnian moon Titan 49 Viking orbiters 49 Gas Chromatograph Mass Spectrometer 49 Boundary Layer 49 INSAT satellites 49 LEOP 49 THEMIS spacecraft 49 Topex Poseidon 49 DIXI 49 total solar irradiance 49 #:# scale 49 polar craters 49 highly elliptical orbit 49 WMAP 49 Space Interferometry Mission 49 THEMIS Images 49 Antarctic icecap 49 ExoMars rover 49 dropsonde 49 MODIS 49 Lunar CRater Observation 49 Stadermann 49 SHARAD 49 stellar occultation 49 radar interferometry 49 lunar regolith 49 lunar orbiter Chang'e 49 Sample Return 49 Scatterometer 49 Jupiter Icy Moons Orbiter 49 interplanetary spacecraft 49 polar vortex 49 multispectral 49 Shepherding Spacecraft 49 extravehicular activities 49 imaging spectrometer 49 Nasa Goddard Space 49 Tunguska asteroid 49 Sojourner rover 49 flybys 49 gravitational lenses 49 flyby spacecraft 49 Cassini Huygens spacecraft 49 TRMM Microwave Imager TMI 49 auroral emissions 49 upper troposphere 49 radial velocity measurements 49 KamLAND 49 ExoMars mission 49 twin Voyager spacecraft 49 Stardust NExT mission 49 Martian craters 49 Anik F3 49 Cryospheric Sciences Branch 49 crustal thickness 49 Insat 49 Relative Navigation 49 WISE spacecraft 49 SAR Lupe 49 Apollo missions 49 multiwavelength 49 NASA Mars Reconnaissance 49 polar regions 49 infrared spectra 49 paleomagnetic 49 topographic measurements 49 equatorial latitudes 49 Multi Object Spectrometer 49 Astrobotic 48 biogeochemical 48 Cassini flybys 48 Sensing Satellite LCROSS 48 radial velocity 48 Neutral Mass Spectrometer 48 astronomical telescope 48 IBEX spacecraft 48 interplanetary missions 48 WISE infrared 48 Venusian surface 48 geostationary satellites 48 Pancam 48 airborne observatory 48 spectroscopic observations 48 Hinode 48 NASA Goddard 48 basaltic rocks 48 Comet Halley 48 ARCTUS 48 infrared spectrograph 48 Glonass K 48 Wilkinson Microwave Probe 48 X ray observatory 48 Eric Rignot 48 TerraSAR X satellite 48 Extrasolar Planet Observations 48 NAVSTAR Global Positioning System 48 aboard Envisat 48 Yarkovsky effect 48 GPS IIF satellites 48 spectroscopic analysis 48 comet nucleus 48 CHIPSat 48 rover Opportunity 48 D CIXS 48 lunar crust 48 narrowband tactical 48 geo stationary orbit 48 Nili Fossae 48 DART spacecraft 48 gamma ray observatories 48 Dyna Soar 48 Krimigis 48 ferry SpaceShipTwo 48 Radiometric 48 NFIRE 48 VINASAT 48 ExoMars 48 Megha Tropiques 48 X ray Telescope XRT 48 photometer 48 geo synchronous 48 Alphasat 48 substorm 48 ultraviolet spectrograph 48 Galileo constellation 48 neutrino detectors 48 asteroid Eros 48 Messenger spacecraft 48 neutral mass spectrometer 48 Oceansat 2 48 Vexcel 48 Hawaii Mauna Kea 48 Argo floats 48 neutrino telescope 48 microlensing 48 Valles Marineris canyon 48 Gusev crater 48 reionization 48 Alphabus 48 UK DMC2 48 orbit GEO 48 ESA ASI 48 Radarsat 48 LOFAR telescope 48 lander 48 stratospheric balloon 48 Hyperspectral 48 Atlas IIAS 48 Space Telescope 48 glacial retreat 48 Stardust spacecraft 48 radiometers 48 LCROSS 48 UVIS 48 Magnetic Imager HMI 48 radiosonde 48 spacecraft orbiting 48 deglaciation 48 orbital rendezvous 48 enters lunar orbit 48 albedo 48 gamma ray spectrometry 48 Panoramic Camera 48 Earth Observation EO 48 MTSAT 1R 48 EGRET 48 sister rover Spirit 48 GSAT 5P 48 NASA MESSENGER spacecraft 48 Greenland glaciers 48 satellites 48 Comet Boethin 48 flea hop 48 XMM Newton X ray 48 mesospheric 48 Spacewatch 48 Telstar #R 48 geostationary satellite 48 atmospheric aerosols 48 Spectrometers 48 Sounder AIRS instrument 48 tethered aerostat 48 GPS Block IIF 48 Cassini Equinox 48 Thermal Emission 48 MUOS satellite 48 YES2 48 Crew Launch Vehicle 48 Solar Terrestrial Physics 48 Amundsen Sea 48 MESSENGER spacecraft 48 Planetary Camera 2 48 STIS 48 Comet Hartley 2 48 ionospheric 48 IODP 48 MErcury Surface Space ENvironment 48 SORCE 48 retroreflector 48 NASA Lunar Crater 48 Galilean satellites 48 lunar probe Chang'e 48 interferometric 48 aerosol concentrations 48 Lunar Reconnaissance Orbiter Camera 48 NPOESS Preparatory Project 48 NASA Kepler telescope 48 HiRISE images 48 Normalized Difference Vegetation 48 airborne LIDAR 48 GeoSAR 48 Jennifer Trosper mission 48 interferometers 48 geostationary orbits 48 GAGAN 48 orbital velocity 48 A#T 48 ASAR images 48 stratospheric ozone 48 Foton M3 mission 48 Microscopy Electrochemistry 48 CARTOSAT 2A 47 RESOURCESAT 47 JPSS 47 PSLV C 47 occultations 47 Stratospheric Observatory 47 GOES satellites 47 Greenbelt Md. manages 47 volcanic plumes 47 lunar craters 47 NIRCam 47 Laser Interferometer Gravitational Wave 47 Spaceguard 47 spatially resolved 47 lunar orbiting spacecraft 47 synthetic aperture 47 Greenland Ice 47 Fomalhaut b 47 solar corona 47 Mini TES 47 spectroscopic 47 Characterization EPOCh 47 LCROSS spacecraft 47 ProtoStar II 47 glaciological 47 Terrestrial Planet Finder 47 Great Observatories 47 gamma ray observatory 47 Itokawa 47 springtime ozone 47 weather satellite TIROS 47 echo sounders 47 evapotranspiration 47 X ray Spectrometer 47 NASA satellites orbiting 47 GPS IIIA satellite 47 Compact Reconnaissance Imaging Spectrometer 47 Track Scanning Radiometer 47 ESA GOCE 47 cosmic ray flux 47 lunar meteorites 47 Saturn Cassini 47 Earth Observation satellites 47 Ice Coring 47 Impactor 47 ROSAT 47 Infrared Telescope Facility 47 Martian surface 47 Cassini 47 martian soil 47 Cosmo SkyMed 47 geosynchronous satellite 47 spectrometer 47 Atmospheric Infrared Sounder 47 Aerial photography 47 Mars rovers Opportunity 47 entire Milstar constellation 47 SDSS telescope 47 Vinasat 47 RHESSI 47 NEAs 47 Mpc 47 glaciers 47 Foton spacecraft 47 waning gibbous 47 Observing System 47 mineralogical mapping 47 crewed spacecraft 47 Required Navigation Performance RNP 47 Infrared Array Camera 47 neutrino detector 47 Polar Operational 47 Meteosat satellites 47 orbiter Mars Odyssey 47 Halzen 47 geophysics prospecting 47 Earth asteroid Itokawa 47 Nasa Mars Odyssey 47 WGS satellites 47 Gravity Probe 47 ARGUS IS 47 WindTracer 47 shepherding spacecraft 47 filamentary structure 47 USArray 47 Mars Analog Svalbard 47 robotic explorers 47 STScI 47 Soyuz #S 47 IP Resistivity 47 CBERS 47 neutrino experiments 47 GJ#b 47 Weddell Sea 47 Program DMSP 47 Europa Orbiter 47 six wheeled rover 47 spacecraft flyby 47 Venusian atmosphere 47 optical interferometry 47 NASA Lunar Prospector 47 spectroscopic measurements 47 lunar soil 47 NASA Kepler 47 asteroid Itokawa 47 LEO satellites 47 Ray Spectrometer 47 Helheim glacier 47 Alaskan glaciers 47 Greenhouse Gases Observing 47 kyr 47 microwave radiometer 47 dropsondes 47 FalconSat 2 47 Moderate Resolution 47 HyShot 47 eyepiece #/#s f/#.# 47 Wideband Gapfiller Satellite 47 deorbiting 47 NLSI 47 UVOT 47 ecliptic plane 47 electromagnetic geophysical survey 47 visit http:/saturn.jpl.nasa.gov 47 ESA Earth Observation 47 endurance UAV 47 NAVSTAR GPS 47 Radiation Belt 47 EUMETSAT 47 Herschel Planck 47 Martian arctic 47 Medspiration 47 Greenland ice 47 Remote Sensing 47 Eemian 47 Flyby spacecraft 47 sunspot cycle 47 paleoclimate 47 OrbView 3 47 infrared wavelengths 47 Landsat Data Continuity 47 sedimentological 47 DMSP satellites 47 comet Churyumov Gerasimenko 47 inch Samuel Oschin 47 Neutron Detector 47 observatories 47 SBIRS HEO 47 MoonLITE 47 Electromagnetic EM 47 geomorphic 47 Antenna LISA 47 aerosol particles 47 orbital maneuvers 47 SOHO spacecraft 47 STEREO mission 47 pointings 47 adaptive optics 47 VLBI 47 STOVL mode 47 JCSAT 9 47 Sinosat 47 orbital eccentricity 47 Sermilik Fjord 47 waxing gibbous 47 Weightless Wonder 47 Sensing Satellite 47 interferometric observations 47 Doppler lidar 47 UltraCamXp 47 Hubble Constant 47 twin STEREO spacecraft 47 unmanned probes 47 Rockot launcher 47 Linear Acceleration 47 eruptive activity 47 C NOFS 47 orbital insertion 47 radial velocities 47 Jakobshavn Isbrae 47 Adaptive optics 47 sediment cores 47 Thales Alenia 47 Mossbauer spectrometer 47 Diviner Lunar Radiometer Experiment 47 Autosub 47 Kepler telescope 47 Eumetsat 47 geosynchronous GEO 47 Moessbauer 47 piggybacked Huygens probe 47 LCROSS mission 47 Saturn moon Enceladus 47 NEXRAD