Related by context. All words. (Click for frequent words.) 71 MARSIS radar 64 Orbiter LRO 64 Lunar Reconnaissance Orbiter LRO 64 VIRTIS 63 APXS 63 radio occultation 63 TanDEM X 63 Mössbauer 62 SHARAD 62 NASA Cassini spacecraft 62 COROT 62 Mini SAR 62 ESA Envisat satellite 62 laser altimeter 62 Planck satellite 62 Ulysses spacecraft 62 Cryosat 61 SMOS 61 LOFAR 61 NASA Wilkinson Microwave 61 SPICAM 61 Voyager spacecraft 61 ESA Mars 61 Cassini Huygens 61 IceCube 61 Philae lander 60 TerraSAR X 60 CRISM 60 ESO VLT 60 gradiometer 60 ICESat 60 situ measurements 60 gamma ray spectrometer 60 Mars Reconnaissance Orbiter MRO 60 Huygens descent 59 radar altimetry 59 Hubble Space Telescope HST 59 Cassini 59 XMM Newton 59 Convection Rotation 59 Orbiter MRO 59 HiRISE 59 radar altimeter 59 GOCE 59 orbiting spacecraft 59 NASA Cassini 59 Mars Climate Sounder 59 Mars landers 58 STEREO spacecraft 58 Proba 2 58 microscopic imager 58 WMAP satellite 58 Kepler Mission 58 Rosetta spacecraft 58 Cosmic Microwave Background 58 Mini TES 58 polar orbiting satellites 58 Martian surface 58 Galileo spacecraft 58 Mars orbiting spacecraft 58 MetOp 58 Saturnian moon Titan 58 HRSC 58 Huygens probe 58 Huygens 58 Cosmic Origins Spectrograph COS 58 ChemCam 58 Compact Reconnaissance Imaging Spectrometer 58 X ray spectrometer 58 orbiting observatories 57 Cassini radar 57 Wilkinson Microwave Anisotropy Probe 57 EPOXI 57 MARSIS instrument 57 Ocean Salinity SMOS 57 Mars CRISM 57 Krimigis 57 planetary Transits 57 neutrino detectors 57 penetrating radar 57 Diviner 57 Mössbauer spectrometer 57 EPOCh 57 Martian arctic 57 Saturn Cassini 57 polarimetry 57 Laser Interferometer Gravitational Wave 57 Anisotropy Probe 57 orbiting Mars 57 Planck spacecraft 57 lander 57 Mossbauer 57 orbiting gamma ray 57 robotic lander 57 Huygens Probe 57 DEPTHX 57 Viking landers 57 EarthScope 57 Heterodyne Instrument 57 gamma ray observatory 57 Planetary Fourier Spectrometer PFS 57 Climate Experiment GRACE 57 Mars Orbiter Camera 56 CALIPSO 56 scatterometer 56 Marsis 56 ESA CryoSat 56 martian meteorites 56 NASA THEMIS 56 SINFONI 56 Mars Reconnaissance Orbiter 56 LIGO 56 infrared telescopes 56 ESA Integral 56 NASA Cosmic Background 56 Nili Fossae 56 NuSTAR 56 Viking Lander 56 THEMIS satellites 56 Microscopy Electrochemistry 56 Mars Odyssey spacecraft 56 Rosetta orbiter 56 KamLAND 56 ESO Very Large Telescope 56 THEMIS mission 56 NASA Far Ultraviolet 56 onboard Chandrayaan 56 RXTE 56 NASA Lunar Reconnaissance 56 Planetary Transits 56 NASA STEREO 56 Huygens mission 56 Titan flybys 56 ray Space Telescope 56 astrometry 56 lunar orbiters 56 Planck telescope 56 Hubble observations 56 SIRAL 56 GIOVE B 56 GOCE satellite 56 spectrographic 56 MINOS 56 JIMO 56 ESA XMM Newton 56 HiRISE camera 56 CryoSat mission 56 NASA COBE satellite 56 polarimetric 56 Mars Color Imager 56 X ray telescopes 56 planetary missions 55 Nasa spacecraft 55 ESA Huygens 55 ESA Planck 55 Shallow Subsurface Radar 55 cosmic microwave radiation 55 rover Opportunity 55 solar corona 55 Advanced Microwave Scanning 55 O OREOS 55 UKIRT 55 neutrino experiments 55 InSAR 55 ESA ERS 55 Phoenix lander 55 neutron spectrometer 55 aerobraking 55 KAGUYA 55 synthetic aperture radar 55 RHESSI 55 Moon Mineralogy Mapper M3 55 SMOS mission 55 SIRTF 55 infrared astronomy 55 THEMIS 55 Titan flyby 55 HiRISE image 55 Microscopic Imager 55 Mossbauer spectrometer 55 SOHO spacecraft 55 Werthimer 55 CloudSat 55 Churyumov Gerasimenko 55 AKARI 55 XMM Newton satellite 55 Satellites GOES 55 Mars Pathfinder lander 55 Very Large Telescope 55 astronomical observations 55 ExoMars mission 55 moon permanently shadowed 55 Mars Odyssey 55 Moessbauer spectrometer 55 Nasa Kepler 55 stellar occultations 55 orbital insertion 55 VISTA telescope 55 Kepler spacecraft 55 robotic landers 55 ESA Herschel 55 Lunar Prospector 55 Mars Odyssey orbiter 55 CryoSat 55 exoplanetary 55 IP Resistivity 55 Cassini flyby 55 ESA Rosetta 55 DIXI 54 magnetic reconnection 54 NASA rovers 54 Express orbiter 54 imaging spectrometer 54 spaceborne 54 radar interferometry 54 Composite Infrared Spectrometer 54 Mars Orbiter 54 Alpha Particle 54 Borexino 54 UVOT 54 Landsat satellite 54 OSIRIS REx 54 LCROSS 54 spacecraft 54 detect gravitational waves 54 AMASE 54 Anisotropy Probe WMAP 54 Ionosphere Sounding 54 Red Planet 54 OMEGA instrument 54 Infrared Pathfinder Satellite 54 moonquakes 54 Helios 2B 54 Herschel Space Telescope 54 unmanned probes 54 spacecraft Cassini 54 ADM Aeolus 54 Gusev crater 54 lunar perigee 54 Spectrograph 54 SQUIDs 54 Herschel telescope 54 stellar occultation 54 Ground penetrating radar 54 Saturn moon Enceladus 54 EPOXI mission 54 Cloud Aerosol Lidar 54 microlensing events 54 robotic rovers 54 lunar equator 54 asteroid Eros 54 Synthetic Aperture Radar 54 stratospheric balloon 54 multibeam 54 infrared spectrometer 54 altimetry 54 Cosmic Background Explorer 54 noctilucent clouds 54 CoRoT satellite 54 Neutron Detector 54 EarthCARE 54 Imaging Spectrometer 54 Envisat 54 Enceladus flybys 54 Relations Observatory STEREO 54 NASA Voyager spacecraft 54 martian 54 ESA Huygens probe 54 ENVISAT 54 ExoMars 54 Antenna LISA 54 Moon Mineralogy Mapper 54 Interstellar Boundary Explorer 54 Gravity Probe B 54 Synthetic Aperture Radar SAR 54 Antarctica EPICA 54 lunar orbits 54 Venusian atmosphere 54 LCROSS mission 54 gaseous planet 54 Deep Impact eXtended Investigation 54 SCIAMACHY 54 Curiosity rover 54 LISA Pathfinder 54 AERONET 54 orbiting Saturn 54 laser altimetry 54 NASA rovers Spirit 54 Kiruna Sweden 54 IBEX spacecraft 54 airglow 54 Rosetta lander 54 orbiting Hubble Space Telescope 54 ESA Cluster 54 Space Telescope GLAST 53 VLBI 53 Orbiter 53 Galaxy Evolution 53 infrared telescope 53 HARPS instrument 53 Lagrangian 53 orbiting telescope 53 substorms 53 spectrographs 53 Fermi Gamma ray 53 NASAs 53 Earthlike planets 53 THEMIS spacecraft 53 Chandrayaan 53 Huygens spacecraft 53 radiotelescope 53 ion propulsion 53 NIRSpec 53 Antarctic Dry Valleys 53 composite infrared spectrometer 53 VTEM airborne 53 sub millimeter wavelengths 53 gravitational microlensing 53 spectroscopic observations 53 Halzen 53 mineralogical composition 53 Landsat satellites 53 substorm 53 Shallow Radar 53 Ultraviolet Imaging Spectrograph UVIS 53 STIS 53 Planck 53 Mercury flyby 53 QuikSCAT 53 ESO telescopes 53 martian surface 53 Keck Interferometer 53 Cassini spacecraft 53 Martian polar 53 ExoMars rover 53 Keck telescope 53 IceCube Neutrino Observatory 53 Instrument OMI 53 AATSR 53 InfiniTEM survey 53 Solar TErrestrial RElations Observatory 53 Shuttle Radar Topography 53 optical telescopes 53 Robotic Arm Camera 53 HARPS N 53 interferometer 53 EVLA 53 polar vortex 53 mesosphere 53 satellite altimetry 53 spacecraft orbiting 53 cosmic ray 53 perchlorate salts 53 Autosub 53 SAFOD 53 NASA Stardust spacecraft 53 NASA Kepler 53 COBE satellite 53 deorbiting 53 Optical Gravitational Lensing Experiment 53 C1XS 53 astronomical telescope 53 rover Spirit 53 Martian crater 53 HARPS spectrograph attached 53 ESA Envisat 53 D CIXS 53 Mauna Kea Hawaii 53 Hubble Space Telescope 53 subglacial lakes 53 extrasolar planet 53 millimeter wavelengths 53 Cassini Huygens spacecraft 53 distant supernovae 53 NASA Mars Reconnaissance 53 Global Surveyor 53 Mars rovers Spirit 53 Telescope BAT 53 Foton M2 53 distant supernovas 53 ESA SMART 53 NASA MESSENGER spacecraft 53 Observatory SDO 53 Magnetometer 52 NEOWISE 52 Meridiani 52 orbiter 52 Mars orbiters 52 lander robotic arm 52 Fuk Li Mars 52 Context Camera 52 Jean Pierre Bibring 52 ionosphere 52 smallest exoplanet 52 flyby Cassini 52 BepiColombo 52 WISE infrared 52 lunar poles 52 C NOFS 52 X ray observatory 52 Galilean satellites 52 Near Infrared Camera 52 drogue parachute 52 NASA LCROSS 52 geoneutrinos 52 lunar craters 52 NASA WMAP 52 orbiting observatory 52 Foing 52 comet Boethin 52 Opportunity rover 52 Multi Object Spectrograph 52 outer planets 52 interferometric synthetic aperture radar 52 Tropical Rainfall Measuring 52 WFC3 52 Multi Object Spectrometer 52 radial velocity technique 52 Mars Squyres 52 spectroscopic analysis 52 NFIRE 52 Neutral Mass Spectrometer 52 Foton M3 52 Viking orbiters 52 Interior Laboratory GRAIL 52 twin Voyager spacecraft 52 Giovanni Picardi 52 STEREO 52 flyby 52 telescopic observations 52 Lunar Reconnaissance Orbiter 52 radial velocity 52 submillimeter 52 Envisat satellites 52 ESOC 52 Smos 52 martian soil 52 Lunar Laser Ranging 52 Martian meteorites 52 UAVSAR 52 retroreflector 52 telescope 52 ESA SMOS 52 Pluto Charon 52 NASA Chandra 52 radiosondes 52 spectrometer 52 e MERLIN 52 YES2 52 interferometers 52 magnetospheric 52 Astrosat 52 lunar regolith 52 High Resolution Imaging 52 irregularly shaped asteroid 52 Laser Interferometer Space 52 MetOp satellite 52 Descent Imager Spectral Radiometer 52 hyperspectral imager 52 LORRI 52 Moderate Resolution Imaging 52 Interferometer 52 WMAP 52 Mastcam 52 Thermal Emission Spectrometer 52 reionization 52 Faint Object 52 WISE spacecraft 52 microlensing 52 Gerard Kuiper 52 asteroid Itokawa 52 volcanic plumes 52 Cosmic Microwave Background CMB 52 Mars Orbiter Laser Altimeter 52 KBOs 52 Doppler measurements 52 Submillimeter Array 52 submillimetre 52 geo stationary orbit 52 XMM Newton X ray 52 comet nuclei 52 cryovolcanism 52 Explorer WISE 52 spacecraft thrusters 52 ROSAT 52 neutral mass spectrometer 52 Nasa Mars Reconnaissance 52 IP Resistivity survey 52 spectroscopic measurements 52 flyby spacecraft 52 particle detector 52 Itokawa 52 interplanetary spacecraft 52 infrared observatory 52 neutrino telescope 52 comet Churyumov Gerasimenko 51 exobiology 51 THEMIS Images 51 gamma ray detectors 51 GROND 51 Comet Hartley 51 Fomalhaut b 51 Planck observatory 51 Geminga 51 Phobos Grunt 51 Martian arctic plains 51 phyllosilicates 51 Resolution Stereo Camera 51 MERIS 51 NASA EPOXI mission 51 ESO astronomer 51 Deep Impact Extended 51 orbital maneuvers 51 GOSAT 51 paleomagnetic 51 Comet #P/Churyumov-Gerasimenko 51 astronomers 51 GRACE satellites 51 infrared spectrograph 51 Mars Odyssey Orbiter 51 NASA Fermi Gamma 51 Space Telescope 51 outer corona 51 Aqua satellite 51 Foton spacecraft 51 infrared wavelengths 51 permanently shadowed craters 51 cosmological observations 51 celestial observations 51 optical interferometry 51 Infrared Thermal Imaging Spectrometer 51 optical wavelengths 51 Orbiter spacecraft 51 Uninhabited Aerial Vehicle 51 LADEE 51 orbiter Mars Odyssey 51 Cassini flybys 51 SeaWiFS 51 celestial sphere 51 Gamma Ray 51 Lunine 51 Moessbauer 51 Shackleton crater 51 spectrometers 51 Mission SRTM 51 interferograms 51 Oceansat 2 51 Esrange 51 LRO spacecraft 51 Huygens lander 51 radiometers 51 seismometers 51 airborne radiometric 51 SDSS II 51 aboard ESA Envisat 51 orbiter Cassini 51 geosynchronous 51 interferometric 51 Rover Opportunity 51 six wheeled rover 51 Galileo satellites 51 Hinode 51 MeerKAT 51 Microwave Imaging Radiometer 51 THEMIS Image 51 NASA Mars Orbiter 51 lidar 51 Heliospheric Observatory SOHO 51 AMSR E 51 Endurance crater 51 Envisat satellite 51 hyperspectral 51 lunar surface 51 ringed planet 51 Magnetic Imager HMI 51 lunar soil 51 Advanced LIGO 51 NASA Solar Terrestrial 51 Cassini orbiter 51 Mission TRMM 51 neutrino oscillation 51 Solar Dynamics Observatory 51 Phoenix Microscopy Electrochemistry 51 OSTM Jason 2 51 NASA Mars Odyssey 51 DISR 51 Mars Phobos 51 LOFAR telescope 51 submillimeter wavelengths 51 SCISAT 51 Solar Orbiter 51 Spectrometer 51 Bruce Jakosky 51 Stardust spacecraft 51 Observatory STEREO 51 NASA Tropical Rainfall 51 FORCAST 51 spacecraft Chandrayaan 1 51 Alycia Weinberger 51 Arecibo Observatory 51 EDXRF 51 gravitational wave 51 Infrared Astronomical Satellite 51 Ed Weiler NASA 51 geosynchronous satellites 51 Area Telescope LAT 51 Hubble Telescope 51 lunar explorer 51 Ranging spacecraft 51 HiRISE camera aboard 51 orbital rendezvous 51 NanoSail D 51 ESO telescope 51 microwave radiometer 51 Conductivity Analyzer 51 Jupiter Icy Moons 51 interferometry 51 Fermi telescope 51 Shepherding Spacecraft 51 Syrtis Major 51 Evolution Explorer 51 ESTRACK 51 astrobiological 51 VIMOS 51 Cosmic Origins Spectrograph 51 HD#b 51 Ocean Salinity 51 VLTI 51 Advanced Synthetic Aperture 51 Infrared Atmospheric 51 Fermi Telescope 51 Saturn magnetosphere 51 NASA Lunar Prospector 51 multispectral 51 highly elliptical orbit 51 Mission TRMM satellite 51 Gakkel Ridge 51 Ellen Stofan 51 galactic cosmic rays 51 NASA ICESat 51 SIM PlanetQuest 51 Earth orbiting satellites 51 asteroid Vesta 51 Metop 51 enters lunar orbit 51 LCROSS Lunar Crater Observation 51 geoid 51 TRMM 51 proton decay 51 KA SAT satellite 50 NASA MESSENGER 50 comet nucleus 50 Gravity Probe 50 Samuel Oschin Telescope 50 Atacama Large Millimeter Array 50 Bernard Foing 50 extrasolar 50 Polarstern 50 GRB #B 50 Martian equator 50 Saturn moons Titan 50 occultation 50 NASA Kepler spacecraft 50 supercomputer simulations 50 LAGEOS 50 Array ALMA 50 NASA Moon Mineralogy 50 robotic spacecraft 50 Ozone Monitoring 50 #P/Churyumov-Gerasimenko 50 twin rover Opportunity 50 Argo floats 50 radial velocity measurements 50 VIRTIS instrument 50 infrared spectrometers 50 interplanetary missions 50 occultations 50 Comet Churyumov Gerasimenko 50 Giove B 50 supersymmetric particles 50 ESA ASI 50 electromagnetic surveying 50 Auger Observatory 50 starquakes 50 UCO Lick 50 MESSENGER 50 NASA Stratospheric Observatory 50 Lunokhod 50 GLAST spacecraft 50 robotic submersibles 50 accelerator mass spectrometry 50 Sounder AIRS instrument 50 geostationary satellites 50 COBE 50 cosmic microwave background 50 Mars Lander 50 microwave remote sensing 50 innermost planet 50 NASA Spirit rover 50 zodiacal light 50 CMB radiation 50 Hinode spacecraft 50 asteroid Steins 50 SuperWASP 50 radial velocity method 50 LCLS 50 ecliptic plane 50 Spitzer infrared spectrograph 50 ITCZ 50 GALEX 50 Epoxi 50 Very Large Array 50 LROC 50 Space Interferometry Mission 50 geosynchronous orbit 50 exoplanets planets 50 Comet Halley 50 ATLAS detector 50 Spitzer Space Telescope 50 Victoria Crater 50 echo sounder 50 thermal emission spectrometer 50 NASA Goddard 50 atmospheric oceanic 50 extrasolar planetary systems 50 NASA QuikScat satellite 50 coronal loops 50 Fermi LAT 50 astrophysical phenomena 50 SDSS telescope 50 auroral 50 Giovanni Cassini 50 oceanographic measurements 50 particle beam 50 Chajnantor plateau 50 Cassini ion 50 geophysics prospecting 50 UA Lunar 50 Herschel Planck 50 Cabeus 50 Extrasolar Planet Observation 50 Martian soil 50 ESA GOCE 50 robotic arm 50 Solar Radiation 50 Earthscope 50 twin rover Spirit 50 ASKAP 50 infrared interferometry 50 flybys 50 Epsilon Aurigae 50 Terrestrial Planet Finder 50 earthshine 50 NASA Kepler telescope 50 Itokawa asteroid 50 Grillmair 50 Atacama Large Millimeter submillimeter 50 magma ocean 50 Jupiter flyby 50 Interferometer VLTI 50 Kuiper belt objects 50 Burst Alert 50 GRBs 50 Remote sensing 50 Martian 50 radiometric measurements 50 Servicing Mission 50 Mars Surveyor 50 X ray emission 50 gravitational lenses 50 attosecond 50 Total Ozone Mapping 50 numerical simulations 50 Elachi 50 USArray 50 TRMM Microwave Imager TMI 50 Ionospheric Sounding 50 Earth Asteroid 50 lunar orbiter Chandrayaan 50 Diviner instrument 50 NASA ESA Hubble 50 cometary 50 alien civilizations 50 Mars lander 50 Mars moon Phobos 50 TRMM satellite 50 Sasselov 50 Peter Jenniskens 50 Magnetospheric 50 Mars Pathfinder 50 X ray observatories 50 Martian craters 50 GLAST 50 elliptical orbits 50 GOES satellites 50 Observatory LIGO 50 exo planets 50 Saturn moon 50 Martian dust 50 X ray Observatory 50 electric ion propulsion 50 Global Precipitation Measurement 50 ESO Paranal Observatory 50 Jean Luc Margot 50 LOCAD PTS 50 arctic plains 50 Spectroscopic 50 X ray Spectrometer 50 Keck telescopes 50 DEIMOS 50 Helioseismic 50 Force Microscopy 50 RRATs 50 Hubble 50 HIAPER 50 spectral fingerprint 50 Resourcesat 2 50 comet McNaught 50 polar orbiting 50 Apollo missions 50 SuitSat 50 geosynchronous satellite 50 optical microscope 50 ASTRON 50 INMS 50 glacial cycles 50 Jenniskens 50 Gradiometer 50 shadowed craters 50 TecSAR 50 Radar ASAR 50 ultraviolet imaging spectrograph 50 Spectroradiometer 50 WISE telescope 49 multibeam sonar 49 La Silla Chile 49 NEEMO 49 Infrared Astronomy 49 Martian lander 49 MiniBooNE 49 GJ#b 49 Southern Observatory ESO 49 GLAST Burst Monitor 49 Climate Sounder 49 Gliese #c 49 neutrino detector 49 weak gravitational lensing 49 moons Phobos 49 NASA Atmospheric Infrared 49 KODAK CCD Image Sensors 49 Venusian surface 49 X ray pulses 49 Sensing Satellite LCROSS 49 VTEM airborne surveys 49 Pancam 49 Mars Opportunity rover 49 extrasolar planets 49 moon Enceladus 49 Solar Terrestrial Relations 49 NICMOS 49 paleoclimate 49 phyllosilicate 49 cryo EM 49 Alfven waves 49 Hubble Near Infrared 49 heavily cratered 49 NanoSIMS 49 pulsating aurora 49 heliopause 49 submillimeter wavelength 49 basaltic rocks 49 shuttle robotic arm 49 radial velocities 49 Gamma ray Large 49 astronomical observatories 49 heliospheric 49 Kepler Space Telescope 49 Comet 9P/Tempel 1 49 FTIR spectroscopy 49 lunar orbit 49 David Southwood ESA 49 Thermal Emission 49 NASA twin rovers 49 Reflection Radiometer 49 redshift 49 Rover MER 49 GIOVE 49 twin STEREO spacecraft 49 panoramic camera 49 swingby 49 auroral emissions 49 Investigation DIXI 49 astrometric 49 Subaru Telescope 49 ESA Proba 49 Mini Thermal Emission 49 spectroscopic 49 Envisat ASAR 49 orbit insertion 49 subsurface ocean 49 NASA Interstellar Boundary 49 infrared spectroscopy 49 Jovian moon 49 GJ #b [001] 49 Planetary Camera 2 49 gravitational waves 49 lunar orbiting spacecraft 49 SAR Lupe 49 Comet Boethin 49 comet flyby 49 retrograde orbit 49 Valles Marineris 49 cometary nucleus 49 distant quasars 49 spacecraft flyby 49 NASA Aqua 49 satellite altimeters 49 X ray wavelengths 49 Soil Moisture 49 hexagonal mirrors 49 RS Ophiuchi 49 ionospheric 49 Lunar Reconnaissance Orbiter Camera 49 Radiometric 49 particle analyzers 49 Nasa Mars Odyssey 49 Ontario Lacus 49 Deep Field HUDF 49 Corot 7b 49 Jonathan Lunine 49 lunar crust 49 Son Nghiem 49 Envisat Advanced Synthetic Aperture 49 ST5 49 APEX telescope 49 Chandrayan 49 HIRES spectrometer 49 lunar orbiter 49 Proba 49 Higgs particle 49 thin crescent 49 comet chaser 49 noctilucent cloud 49 magnetometry 49 tide gauges 49 synthetic aperture 49 Space Agency 49 Gas Chromatograph Mass Spectrometer 49 IODP 49 Telescope Array 49 robotic explorer 49 MOLA 49 Martian rover 49 NASA Gamma ray 49 La Silla observatory 49 Astrophysicists 49 comet Wild 49 Scatterometer 49 NASA Lunar Crater 49 Miniature Thermal Emission 49 infrared mapping spectrometer 49 Jovian moons 49 HUDF 49 Jupiter Ganymede 49 Imaging Spectroradiometer MODIS instrument 49 NASA Infrared Telescope 49 LRO LCROSS 49 SPHERES 49 moon Mab 49 radiosonde 49 Cassini Equinox 49 Stratellite 49 Lake Vostok 49 slender crescent 49 Earth ionosphere 49 Earth magnetosphere 49 planets orbiting distant 49 lander rover 49 microwave radiometers 49 Conductivity Analyzer MECA 49 STEREO mission 49 Arecibo telescope 49 NASA rover Spirit 49 ultrashort pulses 49 Mojzsis 49 Enceladus 49 LRO 49 remote sensing satellites 49 RADARSAT 2 49 Chandrayaan II 49 Nautile 49 Lunar Orbiter Laser Altimeter 49 Wolszczan 49 Yinghuo 1 49 starboard SARJ 49 Autosub# 49 PASADENA Calif. NASA 49 INSAT 3A 49 orbiters