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(Click for frequent words.) 67 BepiColombo 66 SIM PlanetQuest 65 OSIRIS Rex 65 MAVEN 64 Comet #P/Churyumov-Gerasimenko 64 Lunar Reconnaissance Orbiter LRO 64 EPOCh 64 NuSTAR 63 Origins Spectral Interpretation 63 Interior Laboratory GRAIL 63 orbiter lander 63 LADEE 62 Stardust spacecraft 62 EPOXI mission 62 Solar Orbiter 61 ExoMars mission 61 APXS 61 ESA Rosetta 61 Kepler Mission 61 Convection Rotation 61 Stardust NExT 61 planetary Transits 61 Mars Atmosphere 61 Mars Surveyor 61 Rosetta spacecraft 60 THEMIS 60 laser altimeter 60 Volatile Evolution 60 Laser Interferometer Space 60 Solar TErrestrial RElations Observatory 60 Churyumov Gerasimenko 60 Phobos Grunt 60 Epoxi 60 comet Churyumov Gerasimenko 60 NASAs 60 O OREOS 60 Pluto Charon 59 DIXI 59 EPOXI 59 CALIPSO 59 comet #P/Churyumov-Gerasimenko 59 LISA Pathfinder 59 ExoMars rover 59 Philae lander 59 NASA Stardust spacecraft 59 Huygens mission 59 Mastcam 59 Orbiter LRO 59 OSIRIS 59 NASA Stardust NExT 59 planetary missions 59 Huygens Probe 59 Thermal Emission Spectrometer 58 Mars Reconnaissance Orbiter MRO 58 Deep Impact Extended 58 Curiosity rover 58 SIRTF 58 Security Regolith Explorer 58 MESSENGER 58 Cosmic Vision 58 Descent Imager Spectral Radiometer 58 JIMO 58 Chandrayaan II 58 Cassini Huygens 58 Environment Explorer LADEE 58 WISE spacecraft 58 Ranging spacecraft 58 Jupiter Icy Moons 58 Space ENvironment GEochemistry 58 Antenna LISA 58 Sample Return 58 SCISAT 58 Terrestrial Planet Finder TPF 58 Characterization EPOCh 58 comet chaser 58 Terrestrial Planet Finder 58 NASA MESSENGER 58 Lunar Reconnaissance Orbiter Camera 58 MErcury Surface Space ENvironment 58 NASA THEMIS 58 Jupiter Icy Moons Orbiter 58 NFIRE 58 LightSail 1 58 Flyby spacecraft 58 HiRISE camera 57 NASA Stratospheric Observatory 57 ExoMars Trace Gas 57 ChemCam 57 JDEM 57 Mini SAR 57 Europa Orbiter 57 RQ# 57 Ocean Salinity 57 Comet Hartley 2 57 Moon Mineralogy Mapper 57 Comet Churyumov Gerasimenko 57 Cloud Aerosol Lidar 57 Explorer WISE 57 asteroid Vesta 57 Pluto Kuiper Belt 57 NASA STEREO 57 ExoMars 57 Climate Sounder 57 Planetary Transits 57 Rosetta orbiter 57 extrasolar planet observations 57 orbital rendezvous 57 Mars Climate Sounder 57 nanosatellite 57 Investigation DIXI 57 #P/Churyumov-Gerasimenko 57 Stratospheric Observatory 57 Decadal Survey 57 lunar landers 57 STSS Demo 57 Kepler spacecraft 57 Foton M3 56 Space Environment Geochemistry 56 EarthCARE 56 asteroid Itokawa 56 Space Interferometry Mission 56 Mars moon Phobos 56 circumlunar 56 Yarkovsky effect 56 COROT 56 Kepler observatory 56 Deep Impact eXtended Investigation 56 CloudSat 56 NEOWISE 56 Spaceguard Survey 56 ST5 56 HiRISE camera aboard 56 Infrared Astronomy 56 Robotic Arm 56 ESA Planck 56 NASA Kepler 56 NASA MESSENGER spacecraft 56 UA Lunar 56 LROC 56 Cassini Equinox 56 NASA MErcury Surface 56 closest flyby 56 Orbital Express 56 GPS IIR M 56 AMPERE 56 spacecraft 56 radio occultation 55 interplanetary spacecraft 55 imaging spectrometer 55 Comet Boethin 55 GEochemistry 55 Yinghuo 1 55 NASA Lunar Crater 55 twin Voyager spacecraft 55 interplanetary missions 55 NEOSSat 55 Lunar Reconnaissance Orbiter 55 dexterous robot 55 Orbiter MRO 55 Planetary Laboratory 55 Cassini Huygens spacecraft 55 Martian rover 55 Mars Pathfinder lander 55 windshield wiper maneuver 55 ESA Huygens 55 HIAPER 55 TanDEM X 55 Saturnian moon Titan 55 NASA Great Observatories 55 Venus Climate Orbiter 55 NASA LCROSS 55 Mars Color Imager 55 Deep Impact comet 55 LightSail 55 robotic rovers 55 martian surface 55 Deep Impact mission 55 High Resolution Imaging 55 Synthetic Aperture Radar 55 Atlantis Undocks From 55 interstellar dust samples 55 Fundamental Aeronautics Program 55 D CIXS 55 LCROSS mission 55 Helioseismic 55 P Churyumov Gerasimenko 55 ion propulsion 55 SPICAM 55 SINFONI 55 Kepler 9c 55 AMASE 55 GRAIL 55 crewed missions 55 Near Infrared Camera 55 unmanned lunar 55 Infrared Pathfinder Satellite 55 NASA EPOXI mission 54 Lunar Exploration 54 hyperspectral imager 54 Relations Observatory STEREO 54 Solar Sail 54 CubeSat 54 JCSAT 9 54 Astrosat 54 MARSIS 54 geosynchronous 54 comet nucleus 54 Crew Exploration 54 Mars CRISM 54 highly elliptical orbit 54 Hubble Space 54 Saturn Cassini 54 SMOS 54 Viking Lander 54 Foton M2 54 YES2 54 Great Observatories 54 unmanned rover 54 LRO spacecraft 54 THEMIS Images 54 Proba 2 54 Heterodyne Instrument 54 LRO 54 Mars Pathfinder 54 robotic explorers 54 MESSENGER spacecraft 54 SMOS mission 54 reusable spacecraft 54 Planck satellite 54 BepiColombo mission 54 JAXA 54 NASA Kepler telescope 54 exobiology 54 MUSES C 54 SBSS Block 54 Astrobiology Institute 54 Greenbelt Md. manages 54 Laboratory MSL 54 ADM Aeolus 54 FASTSAT 54 Cargo Launch Vehicle 54 Martian surface 54 LCROSS 54 Itokawa asteroid 54 Observatory STEREO 54 manager Gerhard Schwehm 54 Ocean Salinity SMOS 54 twin rover Opportunity 54 UAVSAR 54 Titan flyby 54 crewed spacecraft 54 Deep Impact spacecraft 54 flyby spacecraft 54 Lunar CRater Observation 54 NASA Deep Impact 54 JIMO mission 54 Astrobotic 54 gamma ray observatory 54 LDCM 54 ESA SMART 54 Alpha Particle 54 ARES IX 53 Galileo spacecraft 53 LRO LCROSS 53 Rover MER 53 Rosetta comet chaser 53 unmanned probes 53 SMOS Soil Moisture 53 Voyager spacecraft 53 irregularly shaped asteroid 53 Hubble Space Telescope HST 53 Nasa Deep Impact 53 CX OLEV 53 Hubble Servicing 53 Solar Dynamics Observatory 53 Extrasolar Planet Observations 53 DragonLab 53 robotic spacecraft 53 Corot 7b 53 ESA Herschel 53 Heliospheric Investigation 53 orbiting observatories 53 Lunar Orbit 53 GeneSat 1 53 NASA twin rovers 53 GeneSat 53 Magnetic Imager HMI 53 IBEX spacecraft 53 Cosmic Origins Spectrograph 53 manned lunar 53 gradiometer 53 BLG #Lb 53 Bruce Banerdt 53 Eric Becklin 53 rover Opportunity 53 ESA Integral 53 Stardust NExT mission 53 Uninhabited Aerial Vehicle 53 Mössbauer 53 Neutron Spectrometer 53 exoplanetary 53 Pan STARRS 53 DISR 53 Astro E2 53 SELENE 53 NanoSail D 53 Cryosat 53 NCADE 53 Cometary 53 New Horizons spacecraft 53 Compact Reconnaissance Imaging Spectrometer 53 Laurie Leshin 53 polar orbiting 53 X ray Spectrometer 53 Weightless Wonder 53 NASA Cassini 53 GOES O 53 Microscopic Imager 53 Crewmate Tracy Caldwell 53 Human Spaceflight Microgravity 53 Saturnian system 53 Gamma ray Large 53 ICESat 53 Profiler Suite OMPS 53 navigate autonomously 53 lander 53 onboard Chandrayaan 53 DEPTHX 53 ESA Huygens probe 53 JPL manages 53 Mars 53 Suborbital 53 Orbiter 53 rover Spirit landed 53 Observatory SDO 53 WFC3 53 THEMIS Image 53 lunar orbiter 53 orbiting gamma ray 53 Stardust capsule 53 enters lunar orbit 53 Mini Thermal Emission 53 SMEX 53 Titan flybys 53 spacecraft orbiting 53 Space Shuttle STS 53 asteroid 53 INSAT 3D 53 EarthScope 53 Extrasolar Planet Observation 53 Mars rover 53 maritime subsurface 53 Messenger spacecraft 53 airborne particles affect 53 Radiation Belt 53 Gerhard Schwehm 53 Orion spacecraft 53 Nasa spacecraft 53 Ken Herkenhoff 53 JTAC declared 53 HiRISE 53 GLAST telescope 53 Keck Interferometer 52 MetOp satellite 52 binary asteroid 52 neutral mass spectrometer 52 visit http:/saturn.jpl.nasa.gov 52 Exploration Vehicle CEV 52 orbit GEO 52 Microscopy Electrochemistry 52 Robotic Exploration 52 Solar Terrestrial Relations 52 geo stationary orbit 52 Altair lunar lander 52 airglow 52 Crew Launch Vehicle 52 Panoramic Camera 52 Mars Lander 52 spacecraft SpaceShipTwo 52 cosmological observations 52 twin rovers 52 AIRSS 52 lunar surface 52 NASA Solar Terrestrial 52 Planetary Lab 52 Comet Tempel 1 52 rocky extrasolar planet 52 experimental payloads 52 JWST 52 spaceborne 52 Stratellite 52 Virgin Galactic SpaceShipTwo 52 Multi Object Spectrograph 52 Lunar Module Pilot 52 Webb Telescope 52 Climate Experiment GRACE 52 Ed Weiler NASA 52 Simonetta Di Pippo ESA 52 NASA Cosmic Background 52 Mars northern latitudes 52 Imaging Spectrometer 52 comet Wild 52 Landsat Data 52 Conductivity Analyzer 52 Delfi C3 52 Atacama Large Millimeter Array 52 Orbiting Carbon Observatory OCO 52 ESA Mars 52 Mars Reconnaissance Orbiter 52 Mars landers 52 orbital inclination 52 Bruce Jakosky 52 ultraviolet spectrograph 52 Mercury flyby 52 gamma ray detector 52 Nasa Mars Reconnaissance 52 THEMIS mission 52 GloPac 52 Stardust comet 52 Shepherding Spacecraft 52 manned lunar landing 52 Gravity Probe B 52 GALEX 52 LCROSS spacecraft 52 orbiting Hubble Space Telescope 52 Cosmic Background Explorer 52 journal Meteoritics 52 Optech ALTM 52 geoid 52 NASA rovers 52 orbiting Saturn 52 Endeavour Crater 52 Exploration Vehicle 52 geosynchronous satellites 52 MARSIS radar 52 Rosetta lander 52 Mini TES 52 spokesman Michael Braukus 52 extrasolar planetary systems 52 Metop 52 robotic lander 52 Mars Descent Imager 52 NASA JPL 52 Subsonic Rotary Wing 52 polarimetry 52 X ray spectrometer 52 Magnetospheric 52 weather satellite TIROS 52 SpaceshipTwo 52 robotic rover 52 NASA Far Ultraviolet 52 SpaceX Dragon 52 Atlantis undocks 52 NIRCam 52 infrared observatory 52 Virgin Galactic unveils 52 VIRTIS 52 Asteroid Itokawa 52 Thermal Emission Imaging 52 CRISM 52 Kepler Space Telescope 52 GOES R 52 OSTM Jason 2 52 particle analyzers 52 NASA rovers Spirit 52 mineralogical mapping 52 GOSAT 52 Cosmic Evolution 52 rover 52 Compton Gamma Ray 52 NASA Lunar Reconnaissance 52 WISE telescope 52 NASA GLAST 52 Mars orbiting spacecraft 52 Infrared Astronomy SOFIA 51 orbiting Mars 51 SpaceShip Two 51 Orbiter spacecraft 51 DigitalGlobe WorldView 51 spacecraft Cassini 51 ESA GOCE 51 comet Hartley 2 51 Phobos 51 TDRS K 51 Huygens 51 specialists Lisa Nowak 51 geo synchronous 51 lander rover 51 MESSENGER MErcury Surface 51 Science Experiment HiRISE 51 GOCE 51 HD#b 51 AERONET 51 Energetic Particle 51 Jean Luc Margot 51 Planck spacecraft 51 remote sensing payloads 51 gamma ray spectrometer 51 Pilot George Zamka 51 Nuclear Spectroscopic Telescope Array 51 exosphere 51 Spacewatch 51 Saturn moons Enceladus 51 Comet Hartley 51 Space Infrared Telescope 51 FORCAST 51 HiRISE image 51 MPCV 51 Pete Theisinger 51 VMS Eve 51 Jonathan Lunine 51 ROCSAT 2 51 GPS IIF 51 Planetary Fourier Spectrometer PFS 51 Space Physics LASP 51 NEEMO 51 ASKAP 51 Hubble Telescope 51 lunar explorer 51 Vehicles Directorate 51 manned lunar missions 51 SIRAL 51 CHIPSat 51 unpowered glider 51 Minotaur IV 51 twin rovers Spirit 51 Lunar Crater 51 astrobiological 51 STP S# 51 Michael Studinger 51 Systems Mission Directorate 51 Telescope LSST 51 infrared astronomy 51 Sojourner rover 51 SnoMotes 51 unmanned lunar orbiter 51 Optical Spectroscopic 51 ESA ERS 51 outer planets 51 SELENE probe 51 Solar Sail Spacecraft 51 STORRM 51 Jupiter icy moons 51 Educator Astronaut 51 e MERLIN 51 Oceansat 2 51 Lunar Orbiter 51 robotic explorer 51 remote sensing satellite Resourcesat 51 STSS Demonstration 51 Infrared Array Camera 51 Faint Object 51 microscopic imager 51 swingby 51 shuttle Endeavor 51 LASP 51 manned lunar mission 51 Lunar Atmosphere 51 rover Sojourner 51 Chang'eI 51 Hubble Near Infrared 51 planetary science 51 http:/saturn.jpl.nasa.gov 51 Ulysses spacecraft 51 Cassini 51 Aerosol Polarimetry Sensor 51 WISE mapped 51 Spectrometer 51 Stardust spacecraft swooped 51 Laser Interferometer Gravitational Wave 51 Mission Directorate 51 Context Camera 51 airborne observatory 51 Bepi Colombo 51 Saturn outermost moon 51 entire Milstar constellation 51 Hubble servicing 51 NASA twin STEREO 51 ICESCAPE 51 Nasa Kepler 51 Herschel Space 51 Space Fence 51 Venusian surface 51 KAGUYA 51 Global Precipitation Measurement 51 comets meteors 51 NASA 51 Interstellar Boundary Explorer 51 largest moon Charon 51 Shuttle Endeavour undocks 51 Interorbital Systems 51 GLAST 51 Launch Vehicle 51 commander Zhai Zhigang 51 MetOp 51 entered lunar orbit 51 Space Physics 51 Impactor 51 POES satellites 51 suborbital spaceships 51 Mars orbiter 51 polarimetric 51 Jean Pierre Lebreton 51 Ozone Monitoring 51 Taurus Littrow Valley 51 Total Ozone Mapping 51 LSST 51 ESMD 51 Security GMES 51 Reusable Launch Vehicle 51 retroreflector 51 Helios 2B 51 plutoids 51 impactor spacecraft 50 Opportunity Mars rover 50 Neutral Mass Spectrometer 50 hypersonic glider 50 Facility SIRTF 50 asteroid Steins 50 SORCE 50 Herschel Space Telescope 50 CryoSat mission 50 GOCE satellite 50 STEREO spacecraft 50 sub orbital 50 Shuttle Docks 50 Anisotropy Probe 50 gravitational keyhole 50 G FORCE ONE 50 Interplanetary Internet 50 Lunar Orbiter Laser Altimeter 50 astrometry 50 planetary exploration 50 Dream Chaser 50 Ares IY 50 Giove B 50 comet dust 50 Conductivity Analyzer MECA 50 shuttle Endeavour STS 50 Landsat satellites 50 Earth orbit 50 TacSat 50 Sensing Satellite LCROSS 50 innermost planet 50 Solar Optical Telescope 50 HRSC 50 Emily Lakdawalla 50 asteroid Eros 50 Sasselov 50 Autosub 50 Ultraviolet Imaging Spectrograph 50 detect gravitational waves 50 Mark N. Sirangelo 50 BepiColombo joint 50 planetary surfaces 50 OMEGA instrument 50 SpaceLoft XL 50 lunar exploration 50 Moon Mineralogy Mapper M3 50 radar altimeter 50 Simonetta Di Pipo 50 Manned missions 50 Planck observatory 50 Esrange 50 STEREO mission 50 Aquarius SAC 50 unmanned lander 50 Samuel Oschin Telescope 50 cometary 50 Launch Scrubbed 50 Martian arctic 50 NASA Wilkinson Microwave 50 geostationary earth 50 Enceladus flybys 50 HARPS spectrograph attached 50 shuttle Discovery STS 50 NLSI 50 decadal survey 50 MINOS 50 ESA CryoSat 50 Itokawa 50 Hayabusa capsule 50 Exoplanet 50 Mars Orbiter 50 Orbiting Carbon Observatory 50 heliophysics 50 comet particles 50 Wide Angle Search 50 Martian rocks 50 Stadermann 50 Desert RATS 50 SPHERES 50 Reduced Gravity 50 Foton M3 mission 50 simulated lunar 50 LOCAD PTS 50 ESO VLT 50 Mars Odyssey 50 Shuttle Radar Topography 50 retrograde orbit 50 Mars Orbiter Camera 50 WMAP satellite 50 Launch Abort System 50 Alfred McEwen 50 elliptical polar 50 Jules Verne ATV 50 Discovery STS 50 IceBridge 50 DEIMOS 50 Korotev 50 Jet Propulsion Laboratory JPL 50 KODAK CCD Image Sensors 50 Cygnus Lyra region 50 Resourcesat 2 50 impactor 50 Mars Phobos 50 Fomalhaut b 50 polar orbit 50 Pegasus XL 50 geo synchronous transfer 50 THEMIS satellites 50 NROL 50 Jupiter Ganymede 50 SpaceDev Dream Chaser 50 JLENS 50 Reflection Radiometer 50 Fuk Li Mars 50 engineer Nicole Stott 50 Rutan SpaceShipOne 50 Saturn Uranus Neptune 50 CBERS 2B 50 Keck Telescopes 50 stratospheric airship 50 C1XS 50 rover Curiosity 50 Resolution Imaging 50 Cassini flyby 50 Orion Crew 50 Pluto Eris 50 Endeavour STS 50 robotic landers 50 ARRL AMSAT 50 Opportunity rover 50 Jeffrey Kargel 50 Macroscale Interactions during 50 Polar Epsilon 50 orbiting observatory 50 Cosmic Origins Spectrograph COS 50 Sirangelo 50 SpaceX Falcon 9 50 UK DMC2 50 Spaceguard 50 Commander Charlie Hobaugh 50 ESA ASI 50 Reconnaissance Orbiter 50 neutron spectrometer 50 Multi Object Spectrometer 50 NASA WMAP 50 superheated gases surrounding 50 Vehicle CEV 50 DART spacecraft 50 X ray observatory 50 Mars Opportunity rover 50 Agency JAXA 50 geosynchronous orbit GEO 50 Lunar Rover 50 sols 50 unmanned spacecraft 50 NASA Kepler spacecraft 50 NASA ICESat 50 Hyperspectral Imager 50 Robotic Lunar Exploration 50 dimensional atlas 50 Mission SRTM 50 nanosatellites 50 Magnetic Imager 50 mu Arae 50 GIOVE B 50 engineer Timothy Kopra 50 Lunar Prospector 50 Carl Marchetto 50 Lunar Crater Observation 50 Comet Dust 50 Discovery undocks 49 Muchachos Observatory 49 SHARAD 49 C NOFS 49 Long Wavelength Array 49 NASA GSFC 49 TU# [002] 49 infrared telescopes 49 synthetic aperture 49 NEAR Shoemaker 49 Titan Saturn 49 unpiloted 49 smoothest flattest spot 49 orbiter 49 David Wettergreen 49 VSS Enterprise 49 Operation IceBridge 49 Atacama Large Millimeter submillimeter 49 NASA Orbiting Carbon 49 Alexander Samokutyayev 49 spacecraft Chandrayaan 1 49 NPO Lavochkin 49 Outer Planets 49 VORTEX2 49 duration spaceflights 49 Landsat satellite 49 inhabitable planets 49 electric ion propulsion 49 orbited Jupiter 49 Light Detection 49 YU# 49 Pete Siebold 49 NASA Interstellar Boundary 49 Rick Grammier Deep Impact 49 spectrographic 49 Innovative Partnerships Program 49 Red Planet 49 Hubble orbits 49 aerobraking 49 spectroscopic observations 49 Shallow Subsurface Radar 49 Spectroscopic Explorer 49 Kepler Telescope 49 NAVSTAR Global Positioning System 49 Astrophysics MOA 49 X #B Orbital 49 hyperspectral 49 HEO payloads 49 Meridiani plains 49 NASA Spacecraft 49 Tod Strohmayer 49 NIRSpec 49 comets asteroids 49 Fermi telescope 49 Purgatory Dune 49 LSAM 49 Space Telescope GLAST 49 HEO payload 49 A# spacecraft 49 comet flyby 49 Mars Surveyor Operations 49 VASIMR 49 situ measurements 49 interplanetary 49 NASA Goddard 49 coastal Naro 49 COROT exo 3b 49 PSLV C 49 Opticks 49 Earth Asteroid 49 Epsilon Eridani 49 Butterfly Nebula 49 Earth Connection Coronal 49 Orion Launch Abort 49 Cygnus spacecraft 49 Donald Deke Slayton 49 MARDI 49 Io Europa 49 twin STEREO spacecraft 49 Astronauts Install 49 Commander Sergei Volkov 49 ARCTUS 49 NASA Landsat 49 Mercury magnetosphere 49 Herschel Planck 49 GPS IIR 49 TSX VENTURE ADK 49 satellites orbiting Earth 49 VIIRS 49 Greenhouse Gases Observing 49 spacecrafts 49 MMT Observatory 49 stellar occultation 49 X#B 49 Cassini Image 49 Recovery Experiment SRE 49 ESA SMOS 49 Terrier Orion 49 Institute NSBRI 49 PharmaSat 49 highly elliptical orbits 49 Astronaut Julie Payette 49 Martian plains 49 Mars Rover 49 SPIRE instrument 49 ATV Jules Verne 49 STPSat 49 Director Charles Elachi 49 interstellar dust grains 49 Moonbase Alpha 49 habitable worlds 49 CReSIS 49 magnetic radiometric 49 Lagrangian 49 shepherding spacecraft 49 cometary dust 49 CubeSats 49 E ELT 49 Satellites GOES 49 Miniature Thermal Emission 49 infrared telescope 49 gamma ray observatories 49 Horizons spacecraft 49 bedrock outcropping 49 planetary explorations 49 Heliospheric 49 X ray telescopes 49 lander Philae 49 Iridium NEXT 49 SpaceShip 49 Ian McShane Pillars 49 Planck telescope 49 COBE 49 GJ #b [001] 49 Alphasat 49 DMSP F# 49 Continuity Mission LDCM 49 field Infrared Survey 49 SBIRS HEO 49 radar altimetry 49 orbiting telescope 49 Satellite GOSAT 49 Miniature Synthetic Aperture Radar 49 ecliptic plane 49 Express AM# 49 RPWS 49 Hubble Space telescope 49 ESA astronaut 49 DubaiSat 1 49 Jupiter flyby 49 Mars rovers 49 Ultraviolet Imaging Spectrograph UVIS 49 sister rover Spirit 49 Pancam 49 Array ALMA 49 polar orbiting satellites 49 orbiting spacecraft 49 SpaceX Dragon spacecraft 49 COSMO SkyMed 49 mineralogical composition 49 Rover Opportunity 49 Synthetic Aperture Radar SAR 49 Red Bull Stratos 49 manned Shenzhou 49 scramjet engines 49 ESA Proba 49 twin moons Phobos 49 Pascale Ehrenfreund 49 Envisat satellites 49 Analyzer TEGA 49 Kuiper Belt object 49 Multi Purpose Crew 49 pressurized module 49 spectrometers 49 S/# S1 49 orbital insertion 49 drogue parachute 49 Kuiper Belt objects 49 Insat 3A 49 hypersonic 49 PASADENA Calif. NASA 49 joins rovers Spirit 49 SDSS III 48 SolarEagle 48 commercial spaceline 48 ray Space Telescope 48 Shenzhou orbital modules 48 stationary lander 48 Martian arctic plains 48 Situ Resource 48 ESA Envisat 48 NASA Cassini spacecraft 48 credit NASA JPL 48 orbiter Cassini 48 MARSIS instrument 48 hypersonic flight 48 FalconSat 2 48 Mars rovers Opportunity 48 asteroids 48 shuttle Atlantis STS 48 shuttle undocks 48 QWIP 48 Systems NEX AIQ.H 48 LORRI 48 Optical Gravitational Lensing Experiment 48 gaseous planet 48 Oort Cloud 48 COROT 7b 48 Planetary Science Institute 48 radar altimeters 48 moon Charon 48 SpaceX Dragon capsule 48 Astrophysical Research 48 ESA Cluster 48 equatorial plains 48 GPS 2R