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(Click for frequent words.) 73 ExoMars rover 70 ExoMars mission 65 BepiColombo 60 Jupiter Icy Moons 60 Astrosat 59 Phobos Grunt 59 EarthCARE 59 NuSTAR 59 Cassini Huygens 59 Terrestrial Planet Finder 58 Solar Orbiter 58 JIMO 58 SIM PlanetQuest 58 MetOp 58 Kliper 58 COROT 58 LISA Pathfinder 57 Cryosat 57 Lunar Reconnaissance Orbiter LRO 57 Herschel Planck 57 Alphabus 57 OSIRIS REx 57 Proba 2 57 Laser Interferometer Space 57 Antenna LISA 57 Rosetta orbiter 56 Orbiter LRO 56 SMOS 56 nanosatellite 56 Mars Atmosphere 56 Eurockot 56 Space Agency 56 Cosmic Vision 56 orbiter lander 56 Galileo satellites 55 APXS 55 planetary Transits 55 GOCE 55 comet chaser 55 Convection Rotation 55 Laboratory MSL 55 NFIRE 55 Cargo Launch Vehicle 55 EPOCh 54 Huygens Probe 54 Daniel Sacotte 54 uncrewed 54 Churyumov Gerasimenko 54 ESA Rosetta 54 Alpha Particle 54 DIXI 54 planetary missions 54 LADEE 54 MARSIS 54 pressurized module 54 Pluto Charon 54 NASAs 54 JDEM 53 Chandrayaan II 53 Mars# 53 orbital rendezvous 53 JWST 53 Automated Transfer Vehicle 53 Philae lander 53 Kopernikus 53 MAVEN 53 interplanetary missions 53 Helios 2B 53 X ray spectrometer 53 Lunar Prospector 53 exobiology 53 Curiosity rover 53 Giove B 53 LOFAR 53 Space Telescope GLAST 53 Huygens mission 53 Mars Surveyor 53 Lunar Exploration 52 Ocean Salinity SMOS 52 Phobos Grunt mission 52 OSIRIS Rex 52 CubeSat 52 Foton M3 52 planetary explorations 52 COROT satellite 52 Comet Churyumov Gerasimenko 52 ESA GOCE 52 TanDEM X 52 D CIXS 52 SCIAMACHY 52 Infrared Astronomy 52 manned lunar 52 astrobiological 52 Europa Orbiter 52 Astrium 52 ASPERA 52 Alphasat 52 Smos 52 lunar exploration 52 nanosatellites 52 SAR Lupe 52 Mars 52 Dordain 52 planetary exploration 52 Sojourner rover 52 Pascale Ehrenfreund 52 Comet #P/Churyumov-Gerasimenko 52 Alpha Magnetic Spectrometer AMS 52 robotic landers 52 VIRTIS 52 Volatile Evolution 52 particle detector 52 lunar orbiter 52 Planck spacecraft 52 crewed spacecraft 52 SPHERES 52 Jupiter Icy Moons Orbiter 52 NEOSSat 52 Jules Verne ATV 52 spectrometers 52 GOCE satellite 52 OSIRIS 52 Rosetta spacecraft 52 Crew Launch Vehicle 52 BepiColombo mission 52 Ice Coring 51 Herschel Space 51 ESA Planck 51 NASA Cosmic Background 51 Human Spaceflight Microgravity 51 Martian rover 51 NASA Stratospheric Observatory 51 lander rover 51 ExoMars Trace Gas 51 unmanned lunar 51 NPO Lavochkin 51 Climate Experiment GRACE 51 MeerKAT 51 lunar landers 51 Planck satellite 51 O OREOS 51 Stratospheric Observatory 51 SMOS mission 51 Galileo satellite 51 ESA Herschel 51 Nuclear Spectroscopic Telescope Array 51 Mars Phobos 51 Lunar Orbit 51 CryoSat satellite 51 Japanese Kibo laboratory 51 Climate Sounder 51 Square Kilometre Array SKA 51 Planetary Transits 51 comet #P/Churyumov-Gerasimenko 51 GIOVE B 51 Solar TErrestrial RElations Observatory 51 Foing 51 Professor Pillinger 51 CryoSat 51 ill fated Beagle 51 spacecraft 51 SMOS satellite 51 Cloud Aerosol Lidar 50 AMASE 50 Moon Mineralogy Mapper M3 50 EADS Astrium 50 robotic explorer 50 Vehicle ATV 50 Hubble Space Telescope HST 50 Watchkeeper 50 ESA Huygens 50 particle physics detector 50 Robotic Exploration 50 Cubesat 50 Express orbiter 50 E ELT 50 Kepler Mission 50 Ares I. 50 PPARC 50 HARPS N 50 Mars Pathfinder 50 Mars landers 50 Observatory STEREO 50 ESA Mars 50 Galileo constellation 50 NASA rovers 50 Enceladus flybys 50 Mossbauer spectrometer 50 dexterous robot 50 ADM Aeolus 50 ChemCam 50 polarimetric 50 Mossbauer 50 Square Kilometre Array 50 MoonLITE 50 Sample Return 50 Security GMES 50 Space Interferometry Mission 50 High Accuracy Radial 50 Paulo Nespoli 50 Rosetta comet chaser 50 ARCTUS 50 LCROSS mission 50 LRO LCROSS 50 Ariane launcher 50 Japan Kibo laboratory 50 TerraSAR X 50 Goce 50 Mini SAR 50 SIRTF 50 Mössbauer 50 Permanent Multipurpose Module 50 regolith 50 Volker Liebig 50 Saturnian moon Titan 49 Phoenix Microscopy Electrochemistry 49 extrasolar planetary systems 49 Mastcam 49 lander 49 Rockot 49 Ocean Salinity 49 SpaceX Dragon 49 Orion spacecraft 49 Hubble Servicing 49 unmanned probes 49 Extremely Large Telescope 49 MetOp satellite 49 Conductivity Analyzer 49 Chandrayan 49 robotic spacecraft 49 Gamma ray Large 49 LCROSS 49 Experimental Reactor 49 CubeSats 49 ESA Earth Observation 49 Wide Angle Search 49 CALIPSO 49 ATV Jules Verne 49 Deep Impact eXtended Investigation 49 MINOS 49 Exploration Vehicle 49 X ray Spectrometer 49 Thales Alenia 49 CHIPSat 49 circumlunar 49 Crew Exploration 49 Orbital Express 49 ESOC 49 DEPTHX 49 SMOS Soil Moisture 49 Yinghuo 1 49 Nasa 49 Hubble servicing 49 Vega launcher 49 Eurobot 49 Mars Reconnaissance Orbiter MRO 49 Astrium GmbH 49 laser altimeter 49 Highly Adaptable Satellite 49 Microscopy Electrochemistry 49 PSLV C8 49 Ares rocket 49 Mars moon Phobos 49 robotic rover 49 Orion Crew 49 SSETI Express 49 CEV 49 STSS Demo 49 radar altimeter 49 Simonetta Di Pippo 49 orbital insertion 49 X ray telescopes 49 Epoxi 49 C1XS 49 NASA Kepler spacecraft 49 SIRAL 49 gamma ray spectrometer 49 neutrino experiment 49 scramjets 49 lunar lander 49 spacecrafts 49 orbiting observatories 49 Mars lander 49 MARSIS radar 49 radio occultation 49 VASIMR 49 astrometric 49 Spaceguard 49 Lunar CRater Observation 49 Global Precipitation Measurement 48 UCAV 48 ST5 48 Mars Rover 48 PSLV C# 48 microgravity experiments 48 Cassini 48 rover 48 ESA astronaut 48 comet Churyumov Gerasimenko 48 Deep Impact Extended 48 scramjet engine 48 UK DMC2 48 situ measurements 48 MPCV 48 Astro E2 48 COBE 48 lunar missions 48 Mars Pathfinder lander 48 Landsat Data 48 Jupiter icy moons 48 GMES 48 Vehicle CEV 48 Jodrell Bank 48 Orbiting Carbon Observatory OCO 48 ESA Cluster 48 Earth Observation 48 lunar rover 48 ICESat 48 Mars rover 48 MPLM 48 Mars orbiting spacecraft 48 GLAST 48 Suborbital 48 rover Sojourner 48 Interstellar Boundary Explorer 48 NASA THEMIS 48 Orbit Validation 48 nEUROn 48 gradiometer 48 journal Meteoritics 48 Pan STARRS 48 lunar orbiting spacecraft 48 YES2 48 exoplanetary 48 X ray observatory 48 lunar orbiters 48 Resourcesat 2 48 Lunar Reconnaissance Orbiter 48 XFEL 48 Launch Vehicle 48 SumbandilaSat 48 NASA Cassini 48 Bernard Foing 48 ESA CryoSat 48 Conductivity Analyzer MECA 48 Solar Terrestrial Relations 48 ion propulsion 48 Magnetospheric 48 Martian soil 48 Launch Abort System 48 manned Shenzhou 48 mineralogical mapping 48 neutrino detectors 48 Earthlike planets 48 probe Huygens 48 Orbiter MRO 48 Mars Odyssey 48 ESTRACK 48 Metop 48 Impactor 48 Alpha Magnetic Spectrometer 48 SCISAT 48 Moon Mineralogy Mapper 48 geoid 48 NASA Kepler 48 Huygens 48 asteroid Vesta 48 infrared observatory 48 Poisk 48 Planetary Fourier Spectrometer PFS 48 ESA 48 Ray Spectrometer 48 Kepler spacecraft 48 astroparticle physics 48 Martian lander 47 astronauts Hans Schlegel 47 Infrared Astronomy SOFIA 47 Daniel Sacotte ESA 47 Foton spacecraft 47 Keck Interferometer 47 human spaceflight 47 spectroscopic observations 47 unmanned rover 47 Array ALMA 47 spaceplane 47 Carl Marchetto 47 Imaging Spectrometer 47 IBEX spacecraft 47 Deep Impact comet 47 Characterization EPOCh 47 Orion capsule 47 Rosetta lander 47 GPS IIR M 47 lunar regolith 47 Japanese Kibo lab 47 unpiloted 47 Iter 47 subsurface ocean 47 Mars CRISM 47 TDRS K 47 Altair lunar lander 47 Cartosat 2B 47 Cometary 47 Rockot launch 47 suborbital spacecraft 47 Astrobotic 47 CryoSat mission 47 Space Physics 47 robotic probes 47 COBE satellite 47 Southern Observatory ESO 47 manned missions 47 neutron spectrometer 47 Planck telescope 47 Miniature Synthetic Aperture Radar 47 Galileo spacecraft 47 suborbital spaceships 47 agency CNES 47 Soil Moisture 47 Neutral Mass Spectrometer 47 Thermal Emission Spectrometer 47 magnetic spectrometer 47 manned spaceships 47 Mössbauer spectrometer 47 SELENE 47 FASTSAT 47 Jupiter flyby 47 Spacelab 47 Gaele Winters 47 spokesman Igor Panarin 47 SpaceshipTwo 47 Cosmic Origins Spectrograph COS 47 GeneSat 1 47 Mars orbiter 47 lander Philae 47 Kiruna Sweden 47 Lutetia 47 polar orbiting 47 spaceborne 47 infrared telescopes 47 reusable spacecraft 47 Investigation DIXI 47 Lunar Rover 47 Pluto Eris 47 Ares IY 47 RADARSAT 2 47 ESA XMM Newton 47 NPOESS Preparatory Project 47 Lunar Crater 47 Laser Interferometer Gravitational Wave 47 LIGO 47 Ares Orion 47 Geo synchronous 47 lunar soil 47 e MERLIN 47 enters lunar orbit 47 Viking landers 47 habitable worlds 47 geo synchronous 47 Descent Imager Spectral Radiometer 47 Space ENvironment GEochemistry 47 twin Voyager spacecraft 47 Mercury flyby 47 Mars Exploration 47 Origins Spectral Interpretation 47 Lunar Laser Ranging 47 Orbit Validation IOV 47 detect gravitational waves 47 Kibo module 47 Atacama Large Millimeter submillimeter 47 spectrometer 47 moons Phobos 47 Thales Alenia Space 47 Webb Telescope 47 Minotaur IV 47 orbiting gamma ray 47 Herschel Space Telescope 47 mineralogical composition 47 Extrasolar Planet Observation 47 asteroids Ceres 47 Mini Thermal Emission 47 Orbiting Carbon Observatory 47 equatorial orbit 47 orbiting Saturn 47 Interior Laboratory GRAIL 47 orbiting telescopes 47 Saturn Cassini 47 GRAIL 47 astrobiology 47 Cassini Equinox 47 orbital resonance 47 ATV Johannes Kepler 47 SRON 46 Redu Belgium 46 reentry capsule 46 De Winne 46 Phobos 46 Orbiter 46 Pluto Kuiper Belt 46 DART spacecraft 46 Optical Spectroscopic 46 ultraviolet spectrograph 46 Apollo missions 46 extravehicular activities 46 Jupiter Ganymede 46 Ariane rocket 46 experimental payloads 46 Jovian moon 46 Delfi C3 46 unpressurized cargo 46 vehicle PSLV C# 46 Manchester Jodrell Bank 46 Planck 46 lunar probes 46 LightSail 1 46 extrasolar planet observations 46 Flyby spacecraft 46 neutral mass spectrometer 46 Shallow Radar 46 P Churyumov Gerasimenko 46 MUSES C 46 QQ# 46 Decadal Survey 46 Shenzhou VIII 46 orbiting 46 Gliese #d 46 ITER International Thermonuclear 46 Dyna Soar 46 Advanced LIGO 46 Panoramic Camera 46 orbital maneuvers 46 Oceansat 2 46 lunar orbiter Chandrayaan 46 manned lunar mission 46 COSMO SkyMed 46 orbiters landers 46 Fermi Telescope 46 payloads 46 orbited Jupiter 46 Mini TES 46 Alcatel Alenia 46 EPOXI 46 Reusable Launch Vehicle 46 Synthetic Aperture Radar 46 MESSENGER MErcury Surface 46 Nili Fossae 46 Hubble observations 46 impactor spacecraft 46 Galilean satellites 46 Higgs boson particle 46 THEMIS 46 Extra Vehicular Activity 46 Solid Liquid Mixtures 46 cosmological observations 46 GPS IIF 46 ESA astronaut Christer 46 observing satellites 46 asteroid Steins 46 Orion LAS 46 ISS resupply 46 Ranging spacecraft 46 Cygnus spacecraft 46 Lagrangian 46 Meteorological Satellites 46 Martian rovers 46 extrasolar 46 unmanned lander 46 Martian surface 46 NASA Wilkinson Microwave 46 NASA Lunar Prospector 46 gravitational wave 46 TecSAR 46 Relations Observatory STEREO 46 THEMIS mission 46 CloudSat 46 pressurized compartment 46 Gliese #c 46 X#B 46 Cosmic Origins Spectrograph 46 Leonardo Multi Purpose 46 Square Kilometer Array 46 HEO payload 46 rover Opportunity 46 Miniature Thermal Emission 46 orbiter Cassini 46 Kuiper Belt Objects 46 Nanosatellite 46 Shepherding Spacecraft 46 interplanetary spacecraft 46 Mars Descent Imager 46 Logistics Module 46 Andrey Borisenko 46 crewed missions 46 Optical Gravitational Lensing Experiment 46 Astronaut Julie Payette 46 Multi Purpose Logistics 46 Robotic Arm 46 Astrium Satellites 46 Starchaser Industries 46 swingby 46 Scramjet 46 astrophysical phenomena 46 lunar explorer 46 Nasa spacecraft 46 Starchaser 46 moon Europa 46 Fuk Li Mars 46 ESMD 46 Berinstain 46 Comet Tempel 1 46 Bepi Colombo 46 Particle Physics 46 Jovian moons 46 unmanned lunar orbiter 46 gamma ray observatories 46 microlensing 46 Mars Color Imager 46 Foton M3 mission 46 astrobiologists 46 Marsis 46 Lunar Reconnaissance Orbiter Camera 46 deorbiting 46 HEO payloads 46 BepiColombo joint 46 NIRSpec 46 Mars Orbiter 46 Cartosat 2A 46 Aboard Endeavour 46 satellites orbiting Earth 46 Hubble 46 NASA rover Spirit 46 Skynet 5B 46 GeoForschungsZentrum Potsdam 46 NASA Lunar Reconnaissance 46 David Southwood ESA 46 GOSAT 46 DMSP F# 46 ESO VLT 45 Mars Reconnaissance Orbiter 45 astrophysical 45 Planetary Protection 45 Polar Epsilon 45 imaging spectrometer 45 Johannes Kepler 45 EPOXI mission 45 Huygens lander 45 Continuity Mission LDCM 45 Wolszczan 45 Tunguska asteroid 45 spacecraft Cassini 45 HARPS spectrograph attached 45 Rosetta comet 45 P#/P# truss 45 Shenzhou spacecraft 45 remote sensing satellite Resourcesat 45 Skynet 5C 45 docking compartment 45 #P/Churyumov-Gerasimenko 45 Ares rockets 45 Io Europa 45 Cosmo SkyMed 45 SM4 45 Total Ozone Mapping 45 Foton M2 45 Eumetsat 45 Esrange 45 Astrophysics MOA 45 Kepler 9c 45 Foundation ESF 45 exoplanet hunter 45 Léopold Eyharts 45 infrared spectrometers 45 robot Dextre 45 robotic lander 45 exo planet 45 STP S# 45 XMM Newton 45 Eutelsat KA SAT 45 mission Chandrayan 45 propellant tanks 45 ESA SMART 45 ESA ESTEC 45 Higgs particle 45 simulated lunar 45 Titan flybys 45 HyShot 45 Geosynchronous 45 Kibo Japanese 45 orbiting Hubble Space Telescope 45 NASA Orbiting Carbon 45 Discovery STS 45 orbital inclination 45 Stardust spacecraft 45 Alan Thirkettle 45 twin moons Phobos 45 Ariane launchers 45 Glonass K 45 Lunar Surface 45 Mars Lander 45 FP6 45 Hubble Near Infrared 45 Satellite Launch Vehicle GSLV 45 Yarkovsky effect 45 Robotic Lunar Exploration 45 STEREO mission 45 Facility SIRTF 45 lunar probe 45 propellant loading 45 Ariane 5G 45 LEOP 45 Unmanned Combat Air 45 orbiting Mars 45 onboard Chandrayaan 45 Huygens probe 45 COSPAR 45 Fomalhaut b 45 lunar surface 45 Chandrayaan 45 landers 45 astronomers 45 Galileo 45 NASA MESSENGER 45 Shallow Subsurface Radar 45 terrestrial planets 45 Helioseismic 45 SESAR 45 astrometry 45 7th Framework Programme 45 orbital eccentricity 45 GPS Block IIF 45 mass spectrometer 45 ASKAP 45 Infrared Pathfinder Satellite 45 Heterodyne Instrument 45 GALEX 45 SPICAM 45 Mauna Kea Hawaii 45 Ares V 45 Sanswire TAO 45 Blackswift 45 Spectrograph 45 NASA LCROSS 45 Venus Climate Orbiter 45 XMM Newton satellite 45 gravitational lenses 45 asteroid Itokawa 45 DEIMOS 45 infrared telescope 45 Pegasus XL 45 Express AM# 45 Mars unfeasible 45 orbiter 45 HIAPER 45 Autosub 45 NCADE 45 Dream Chaser 45 SHARAD 45 Eurostar E# 45 Tycho Brahe 45 six wheeled rover 45 Soyuz launcher 45 ESA Envisat satellite 45 SINFONI 45 manned lunar landing 45 manned lunar missions 45 lunar expeditions 45 lander Beagle 2 45 European XFEL 45 flyby spacecraft 45 Near Infrared Camera 45 HiRISE image 45 carbonaceous chondrite 45 Explorer WISE 45 Nasa Jet Propulsion 45 Spectrometers 45 propulsion subsystem 45 Soyuz FG 45 AIRSS 45 orbiting telescope 45 Ariane 5 45 NEOs 45 SPIRE instrument 45 ESRIN 45 Telescope Array 45 radial velocity technique 45 LightSail 45 GSLV Mk III 45 SpaceDev Dream Chaser 45 shuttle Endeavour STS 44 meteoritic material 44 Thirty Meter Telescope 44 CRISM 44 plutoids 44 ESA ASI 44 Centre BNSC 44 Gerhard Schwehm 44 Atlantis Undocks From 44 Super Earths 44 geosynchronous 44 NASA twin rovers 44 xenon propellant 44 spectroscopic 44 Alexander Samokutyaev 44 USVs 44 NASA Gamma ray 44 Sensing Satellite LCROSS 44 W. Haise 44 Radiation Dose Monitor 44 André Kuipers 44 Cosmic Background Explorer 44 Solar System 44 lunar spacecraft 44 S/# P2 44 Launch Scrubbed 44 STIS 44 SELEX Sensors 44 TerraSAR X satellite 44 ISRO Chandrayaan 44 robot rovers 44 ESA Integral 44 GPS 2R 44 NASA Kepler telescope 44 ARTEMIS 44 ELM PS 44 Greenbelt Md. manages 44 spectrographs 44 smallest exoplanet 44 JPL rover 44 planemos 44 autonomous rendezvous 44 Grenoble Observatory 44 SBIRS HEO 44 rovers 44 GJ #b [001] 44 Rutherford Appleton 44 Carlo Gavazzi Space 44 MSL rover 44 robotic rovers 44 S/# S1 44 Observatory SDO 44 NASA STEREO 44 ESTEC 44 NEOWISE 44 EELVs 44 Canadarm2 robotic arm 44 Multi Purpose Logistics Module 44 Jean Pierre Lebreton Huygens 44 ASTRA 1L 44 Atlas 2AS 44 inhabitable planets 44 ESAS 44 TacSat 44 scramjet engines 44 WISE spacecraft 44 Galileo Avionica 44 GSTB V2 44 supersymmetric particles 44 PSLV rocket 44 JIMO mission 44 Environment Explorer LADEE 44 NanoCMOS 44 DubaiSat 1 44 GSLV rocket 44 orbiter robotic arm 44 International Space Station 44 SSTL 44 Chang'eI 44 lunar explorers 44 GLSV 44 Mars Climate Sounder 44 Solid Rocket Boosters 44 Marchis 44 Kepler observatory 44 Interorbital Systems 44 NASA MESSENGER spacecraft 44 AMPERE 44 Aeronomy 44 Orbiter spacecraft 44 SpaceLoft XL 44 Discovery payload bay 44 Ozone Monitoring 44 shuttle Atlantis 44 Energetic Particle 44 airborne observatory 44 Kayser Threde 44 SkySat 44 Rover MER 44 KSLV 1 44 Gravity Probe B 44 Discovery undocks 44 twin rover Opportunity 44 MALE UAV 44 Orion Ares 44 EUMETSAT 44 Council PPARC 44 Ares V. 44 UKIRT 44 Stardust NExT 44 lander robotic arm 44 nano satellites 44 LRO 44 MARSIS instrument 44 planetary surfaces 44 Hubble Space Telescope 44 Fermi Gamma ray 44 Polar Lander 44 Japanese Aerospace Exploration 44 neutron detector 44 Servicing Mission 44 Terrestrial Planet Finder TPF 44 interstellar dust samples 44 Virgin Galactic SpaceShipTwo 44 Magnetic Imager HMI 44 Astrobiology 44 NASA Far Ultraviolet 44 countdown dress rehearsal 44 liquid propellants 44 hypersonic missiles 44 SDSS II 44 Opportunity rovers 44 LSAM 44 Jules Verne Automated Transfer 44 STORRM 44 electric ion propulsion 44 STEREO 44 spacecraft Chandrayaan 1 44 spacefarers 44 GeneSat 44 shuttle Endeavor 44 Globular Cluster 44 Optus D3 44 engineer Salizhan Sharipov 44 highly elliptical orbit 44 Crewmate Tracy Caldwell 44 decadal survey 44 astronomical telescope 44 ITER 44 cosmic cannibal 44 asteroid Eros 44 Ulysses spacecraft 44 Manned Mission 44 Hubble Space telescope 44 NASA 44 GridPP 44 asteroid 44 robotic explorers 44 MESSENGER 44 HiRISE 44 CoRoT 44 Human Spaceflight 44 NPOESS 44 Spudis 44 Comet Halley 44 Cosmic Background Explorer COBE 44 Higgs bosons 44 XMM Newton X ray 44 Canadarms 44 ion thrusters 44 numerical simulation 44 Regolith 44 Harmony Node 44 ammonia coolant tank 44 Bruce Jakosky 44 Interferometer 44 GSLV D3 rocket 44 entire Milstar constellation 44 Uninhabited Aerial Vehicle 44 Selex Galileo 44 suborbital 44 Igor Mitrofanov 44 Stardust NExT mission 44 Cassini Huygens spacecraft 44 Astronauts Install 44 IXO 44 Multi Object Spectrometer 44 celestial observations 44 radial velocity 44 Jean Pierre Lebreton 44 Ed Weiler NASA 44 Technology Demonstrator 44 geosynchronous orbit GEO 44 NASA Landsat 43 Joint Undertaking 43 PSLV C7 43 WMAP satellite 43 System F6 43 mission Chandrayaan 43 Impact Probe MIP 43 Synthetic Aperture Radar SAR 43 robotic Canadarm 43 Nasa Kepler 43 GIOVE 43 National Polar Orbiting 43 HAMSAT 43 Talarion 43 Reaction Engines 43 Anisotropy Probe 43 Soyuz launchers 43 Gravity Recovery