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(Click for frequent words.) 62 Lunar Reconnaissance Orbiter LRO 61 spacecraft 61 Mars Reconnaissance Orbiter 60 LROC 60 HiRISE 60 Lunar Reconnaissance Orbiter 59 MESSENGER 59 Hubble 58 Orbiter 58 Cassini Huygens 58 Mars Reconnaissance Orbiter MRO 58 GOCE 58 SMOS 57 LCROSS 57 Orbiter LRO 57 EPOXI 57 flyby spacecraft 56 laser altimeter 56 NASAs 56 Spacecraft 56 NanoSail D 56 lander 56 LADEE 56 HiRISE camera 56 ICESat 56 Lunar Reconnaissance Orbiter Camera 55 Orbiter MRO 55 Proba 2 55 orbiting observatories 55 orbiter 55 Cryosat 55 THEMIS 55 SIRTF 55 Mars Pathfinder 55 IBEX spacecraft 55 orbiting observatory 55 HiRISE camera aboard 55 JWST 55 Rosetta spacecraft 55 LCROSS spacecraft 55 Ocean Salinity 54 CALIPSO 54 Mars Surveyor 54 Mars Orbiter 54 NEOSSat 54 LRO spacecraft 54 shepherding spacecraft 54 HRSC 54 NASA EPOXI mission 54 Stardust spacecraft 54 OSIRIS REx 54 ESA Planck 54 Churyumov Gerasimenko 54 NIRSpec 54 NASA Stardust spacecraft 54 Explorer WISE 54 APXS 54 rover 54 DISR 53 Nasa spacecraft 53 Solar Dynamics Observatory 53 BepiColombo 53 COROT 53 AKARI 53 NASA Lunar Reconnaissance 53 GALEX 53 Reconnaissance Orbiter 53 LISA Pathfinder 53 Hubble Space 53 NASA rovers 53 Kepler spacecraft 53 Huygens Probe 53 geosynchronous satellites 53 gamma ray spectrometer 53 WFC3 53 rovers 53 Lunar Orbiter 53 Hubble Space Telescope 53 NuSTAR 53 Hubble Telescope 53 Webb Telescope 53 O OREOS 53 SSETI Express 53 orbiting spacecraft 53 Kepler Mission 53 SPIRE instrument 53 Cassini 53 orbiting Mars 52 ESA Rosetta 52 ESA SMART 52 MetOp 52 Mars Odyssey 52 LORRI 52 Hubble Space Telescope HST 52 NASA rovers Spirit 52 Planck satellite 52 remote sensing satellites 52 NASA MESSENGER 52 Apollo missions 52 THEMIS satellites 52 Mars orbiter 52 Interior Laboratory GRAIL 52 ESA ERS 52 GLAST 52 lunar missions 52 Astrosat 52 TanDEM X 52 Terrestrial Planet Finder 52 Orbital Express 52 VIRTIS 52 ST5 51 CloudSat 51 QuickBird 51 EPOXI mission 51 Herschel Planck 51 Mars landers 51 ESA Huygens probe 51 Solar Orbiter 51 Resolution Imaging 51 KODAK CCD Image Sensors 51 Galileo spacecraft 51 Comet #P/Churyumov-Gerasimenko 51 NPOESS 51 IKONOS 51 imaging spectrometer 51 swingby 51 Context Camera 51 orbiting gamma ray 51 lunar surface 51 NASA Kepler 51 Relations Observatory STEREO 51 NASA Mars Reconnaissance 51 infrared astronomy 51 Landsat satellites 51 AMIE camera 51 Rosetta orbiter 51 Mars Orbiter Camera 51 satellites 51 LRO LCROSS 51 Cartosat 51 http:/saturn.jpl.nasa.gov 51 Wilkinson Microwave Anisotropy Probe 51 asteroid Steins 51 Viking landers 51 Huygens mission 51 Earth orbiting satellites 51 Galileo satellites 51 Globalstar satellites 51 infrared telescopes 51 Planck 51 SIM PlanetQuest 51 Global Surveyor 51 CryoSat 51 Nasa Mars Reconnaissance 51 planetary missions 51 LCROSS mission 51 ESA GOCE 51 NASA 50 Martian surface 50 manned lunar landing 50 NASA LCROSS 50 Titan flybys 50 spacecraft orbiting 50 CARTOSAT 50 Mission SRTM 50 Gravity Probe B 50 robotic explorer 50 robotic spacecraft 50 NASA Solar Terrestrial 50 Great Observatories 50 Mini TES 50 Cloud Aerosol Lidar 50 interplanetary missions 50 WMAP satellite 50 Mars Color Imager 50 STORRM 50 Sojourner Rover 50 Hubble observations 50 ESOC 50 MESSENGER spacecraft 50 Observatory SDO 50 robotic rovers 50 Saturn Cassini 50 Sojourner rover 50 visit http:/saturn.jpl.nasa.gov 50 Yinghuo 1 50 CRISM 50 Infrared Pathfinder Satellite 50 New Horizons spacecraft 50 D CIXS 50 Titan flyby 50 NASA Cassini spacecraft 50 orbiting telescope 50 Mars orbiters 50 Voyager spacecraft 50 Lunokhod 50 Space Telescope 50 orbiters 50 C1XS 50 Pancam 50 Hubble telescope 50 NASA STEREO 50 NEOWISE 50 spectrographs 50 NFIRE 50 Jupiter flyby 50 orbiting Hubble Space Telescope 50 Philae lander 50 NASA THEMIS 50 NASA Cosmic Background 50 Cosmic Background Explorer 50 GIOVE B 50 KAGUYA 50 YES2 50 Herschel telescope 50 planetary Transits 49 EPOCh 49 Mars rover 49 Jupiter Icy Moons 49 telescopic observations 49 Mars CRISM 49 ESA Proba 49 Shepherding Spacecraft 49 orbiting Saturn 49 Shuttle Radar Topography 49 XMM Newton 49 lunar orbit 49 robotic explorers 49 celestial observations 49 NASA Cassini 49 solar corona 49 Huygens 49 High Resolution Imaging 49 Antenna LISA 49 RazakSAT 49 CHIPSat 49 Spacewatch 49 martian surface 49 Comet Churyumov Gerasimenko 49 NASA Stratospheric Observatory 49 comet Churyumov Gerasimenko 49 ROCSAT 2 49 Chang'eI 49 DigitalGlobe WorldView 49 comet nucleus 49 Chandrayaan 49 Mars Exploration 49 UKIRT 49 lunar orbiters 49 Solar Dynamics 49 Mercury flyby 49 Moon Mineralogy Mapper 49 cometary 49 Galaxy Evolution 49 interplanetary spacecraft 49 OSIRIS 49 ChemCam 49 infrared telescope 49 Astrobotic 49 telescope 49 SCISAT 49 Resourcesat 49 TerraSAR X 49 WISE telescope 49 Mars Rover 49 Flyby spacecraft 49 Keck telescope 49 spacecrafts 49 Neptec 49 onboard Chandrayaan 49 HiRISE image 49 Cassini Huygens spacecraft 49 Diviner instrument 49 MARSIS 49 Science Experiment HiRISE 49 Sensing Satellite LCROSS 49 Landsat satellite 49 ESA Herschel 49 Messenger spacecraft 49 flyby 49 VIIRS 49 Orbiting Carbon Observatory 49 GPS IIF 49 X ray observatory 49 Epoxi 48 ESA CryoSat 48 Planck telescope 48 GOCE satellite 48 rovers Spirit 48 Mars Pathfinder lander 48 spaceborne 48 Solar TErrestrial RElations Observatory 48 astronomical telescope 48 Multi Object Spectrometer 48 Rover MER 48 Deep Impact flyby spacecraft 48 WISE spacecraft 48 Infrared Array Camera 48 comet chaser 48 Deep Impact mission 48 Resourcesat 2 48 Minotaur IV 48 ExoMars rover 48 comet flyby 48 Jupiter Icy Moons Orbiter 48 landers 48 Commander George Zamka 48 Enceladus flybys 48 Robotic Arm 48 Mössbauer 48 Foton M2 48 Mars Lander 48 JAXA 48 Tropical Rainfall Measuring 48 robotic lander 48 situ measurements 48 http:/www.nasa.gov/cassini 48 impactor 48 infrared spectrometers 48 ESA Integral 48 Cosmic Evolution 48 FORCAST 48 SOHO spacecraft 48 satellites orbiting Earth 48 ESA Envisat 48 Near Infrared Camera 48 Terrain Mapping Camera 48 Diviner 48 NEAR Shoemaker 48 rover Opportunity 48 polar orbiting satellites 48 OSTM Jason 2 48 Mastcam 48 Proba 48 radio occultation 48 aerobraking 48 unmanned probes 48 NASA Wilkinson Microwave 48 Thermal Emission Spectrometer 48 NASA ICESat 48 Red Planet 48 GOSAT 48 GOES R 48 DubaiSat 1 48 Keck Interferometer 48 X ray spectrometer 48 FASTSAT 48 Hubble Servicing 48 STEREO spacecraft 48 orbital rendezvous 48 WorldView 48 Anisotropy Probe WMAP 48 asteroid Itokawa 48 ESA XMM Newton 48 extrasolar planets 48 fainter objects 48 Lunar Crater 48 Chandrayaan II 48 Area Telescope LAT 48 reusable spacecraft 48 Cathy Peddie LRO 48 MErcury Surface Space ENvironment 48 Mars Climate Sounder 48 Ocean Salinity SMOS 48 Space Telescope GLAST 48 Ares IX 48 Asteroid Itokawa 48 Envisat satellites 48 Resolution Instrument 48 GeneSat 1 48 microscopic imager 48 Servicing Mission 48 JIMO 48 Craig Tooley LRO 48 twin STEREO spacecraft 48 circumlunar 47 ESO telescopes 47 twin rovers 47 Comet Hartley 2 47 Compton Gamma Ray 47 NASA Kepler telescope 47 robotic rover 47 asteroid Eros 47 SMEX 47 STEREO mission 47 Foton M3 47 flybys 47 Mini SAR 47 Herschel Space 47 TacSat 47 Huygens probe 47 hyperspectral imager 47 spectroscopic 47 NFIRE satellite 47 SPICAM 47 Deep Impact eXtended Investigation 47 equatorial orbit 47 lunar orbiter 47 QuickBird satellite 47 Comet Lulin 47 shuttle Endeavor 47 highly elliptical orbits 47 NASA Interstellar Boundary 47 ultraviolet spectrograph 47 SpaceX Falcon 9 47 orbiting telescopes 47 Reflection Radiometer 47 Deep Impact spacecraft 47 Nasa 47 WMAP 47 Total Ozone Mapping 47 GNSS receivers 47 RXTE 47 NIRCam 47 experimental payloads 47 infrared observatory 47 Cassini flyby 47 HIAPER 47 Hubble Space telescope 47 asteroid Vesta 47 Convection Rotation 47 adaptive optics 47 Lunar Prospector 47 LEO satellites 47 GOES O 47 UK DMC2 47 Spitzer infrared telescope 47 GOES satellites 47 moon Charon 47 Stardust NExT mission 47 ESO VLT 47 OSIRIS Rex 47 ARISSat 47 Slooh 47 Dalcanton 47 SMOS Soil Moisture 47 retroreflector 47 spectroscopic observations 47 GEO satellites 47 geosynchronous 47 twin rovers Spirit 47 Gerhard Schwehm 47 deorbiting 47 Heliospheric Observatory SOHO 47 Ranging spacecraft 47 Mars orbiting spacecraft 47 Spectrometer 47 spacecraft Chandrayaan 1 47 Huygens lander 47 AAVSO 47 NextSat 47 outer planets 47 Sample Return 47 NASA Jet Propulsion Laboratory 47 Faint Object 47 radar altimeter 47 gradiometer 47 MetOp satellite 47 Chandrayan 47 exoplanetary 47 polarimetry 47 Cosmic Background Explorer COBE 47 NPOESS Preparatory Project 47 Infrared Astronomy SOFIA 47 Mars Global Surveyor 47 Spectrograph 47 Space Shuttle 47 NASA Moon Mineralogy 47 ESA ASI 47 SORCE 47 Hyper X 47 Clementine spacecraft 47 ion propulsion 47 Impact Probe MIP 47 Landsat 47 SCIAMACHY 46 SBSS satellite 46 Mars Odyssey spacecraft 46 coronagraph 46 EPOXI spacecraft 46 SuitSat 46 NASA twin STEREO 46 Planetary Fourier Spectrometer PFS 46 THEMIS spacecraft 46 nanosatellite 46 lander Philae 46 astrometric 46 CryoSat mission 46 Space Interferometry Mission 46 Cassini orbiter 46 ExoMars Trace Gas 46 Kepler Space Telescope 46 Lunar Rover 46 Rosetta comet chaser 46 Venusian surface 46 Planck spacecraft 46 enters lunar orbit 46 Deep Impact comet 46 XMM Newton satellite 46 Viking Lander 46 Giove B 46 geosynchronous satellite 46 Descent Imager Spectral Radiometer 46 KBOs 46 Heterodyne Instrument 46 Deep Impact probe 46 HUDF 46 Cartosat 2A 46 JPL 46 satellite constellation 46 SSTL 46 spacecraft Cassini 46 Planetary Camera 2 46 astrophysical phenomena 46 flyby Cassini 46 Hubble orbits 46 Phobos 46 NASA Goddard 46 astronomical observations 46 DIXI 46 SPIRE 46 Lunar Exploration 46 Atlantis STS 46 photometer 46 CoRoT satellite 46 lunar landers 46 Anisotropy Probe 46 Jet Propulsion Laboratory JPL 46 RESOURCESAT 46 Stardust capsule 46 Nuclear Spectroscopic Telescope Array 46 airglow 46 NASA MESSENGER spacecraft 46 Cometary 46 lunar regolith 46 JDEM 46 Comet Hartley 46 Centaur rocket 46 Meteosat 46 Spaceguard 46 astrometry 46 Space Infrared Telescope 46 polarimetric 46 crewed spacecraft 46 scramjet 46 NASA Mars Odyssey 46 Kepler observatory 46 Gamma ray Large 46 SIRAL 46 DragonLab 46 Fermi telescope 46 Mars lander 46 six wheeled rover 46 WFPC2 46 Discovery STS 46 RADARSAT 2 46 Mars Polar Lander 46 multispectral 46 Moessbauer spectrometer 46 Climate Experiment GRACE 46 Opportunity rover 46 CBERS 46 Space Shuttle Endeavour 46 reconnaissance orbiter 46 highly elliptical orbit 46 ILS Proton 46 Nasa Mars Odyssey 46 shuttle Discovery STS 46 DigitalGlobe constellation 46 Mini Thermal Emission 46 X ray telescopes 46 twin rover Opportunity 46 Phobos Grunt 46 Optus D3 46 NASA Gamma ray 46 Synthetic Aperture Radar 46 Mars Opportunity rover 46 Lunar CRater Observation 46 martian soil 46 Envisat 46 Adaptive optics 46 Synthetic Aperture Radar SAR 46 STSS Demo 46 MARSIS radar 46 occultations 46 Oceansat 2 46 lunar soil 46 Space ENvironment GEochemistry 46 GPS IIR M 46 OrbView 3 46 downlink 46 inch Samuel Oschin 46 Space Shuttle Program 46 gamma ray observatory 46 Ulysses spacecraft 46 shuttle Endeavour STS 46 simulated lunar 46 Isro 46 NICMOS 46 STIS 46 comets 46 RHESSI 46 Martian rovers 46 hyperspectral 46 unmanned lunar orbiter 46 aboard ESA Envisat 46 Stardust NExT 46 Saturnian moon Titan 46 GeoEye 46 Martian landscape 46 Jules Verne ATV 46 orbital 46 GEochemistry 46 Galileoscope 46 lunar topography 46 radar altimetry 45 Manned missions 45 IceBridge 45 ExoMars mission 45 X ray telescope 45 Pluto Charon 45 Horizons spacecraft 45 Martian rover 45 spatially resolved 45 remote sensing satellite 45 spectrographic 45 NROL 45 NASA Odyssey orbiter 45 unmanned spacecraft 45 POES satellites 45 scramjets 45 twin Voyager spacecraft 45 irregularly shaped asteroid 45 STP S# 45 NASA Landsat 45 Magnetospheric 45 SBIRS 45 Martian arctic 45 Curiosity rover 45 Mission TRMM 45 CBERS 2B 45 Astro E2 45 Ranging MESSENGER spacecraft 45 Moon Mineralogy Mapper M3 45 Kuiper Belt Objects 45 Neutron Spectrometer 45 Europa Orbiter 45 geo stationary orbit 45 Laser Interferometer Space 45 Pluto Kuiper Belt 45 HiRISE images 45 Kepler telescope 45 Boethin 45 Bob Ess 45 Minotaur rocket 45 detect gravitational waves 45 Continuity Mission LDCM 45 NASA Kepler spacecraft 45 FORMOSAT 45 Krimigis 45 Exoplanet 45 Lunar Orbiter Laser Altimeter 45 ENVISAT 45 Fermi Gamma ray 45 Cosmic Origins Spectrograph 45 Mars 45 Space Shuttle Discovery 45 UAVSAR 45 spectrometer 45 orbit 45 comet Wild 45 interstellar particles 45 orbit insertion 45 NASA Voyager spacecraft 45 Ariane 5G 45 Phoenix lander 45 LEOP 45 NASA Orbiting Carbon 45 lunar 45 panoramic camera 45 Flyby 45 Express orbiter 45 Interorbital Systems 45 X ray Spectrometer 45 Anik F3 45 NASA Mars Orbiter 45 Environmental Satellite POES 45 lunar exploration 45 AMPERE 45 ISRO 45 Launch Abort System 45 SpaceDev 45 Arecibo Observatory 45 Beta Pictoris b 45 orbital velocity 45 Ares IY 45 Observatory STEREO 45 LCROSS Observation Campaign 45 payloads 45 Comet Machholz 45 Globalstar constellation 45 GeneSat 45 infrared spectrograph 45 LCROSS Lunar Crater Observation 45 lunar landing 45 Glonass K 45 OMPS 45 Cabeus crater 45 Hinode 45 ESA Huygens 45 entire Milstar constellation 45 Insat 3A 45 Jupiter Ganymede 45 SDSS II 45 Planck observatory 45 dimensional atlas 45 extrasolar 45 Keck Observatory 45 magnetic spectrometer 45 LASP 45 Emily Lakdawalla 45 orbiter lander 45 ESMD 45 Mars Odyssey orbiter 45 Jovian moons 45 ARCTUS 45 Mars rover Curiosity 45 LOFAR 45 remote sensing satellite Resourcesat 45 Space Shuttle Atlantis 45 Dynamics Observatory 45 optical wavelengths 45 Milstar II 45 Cargo Launch Vehicle 45 Narrow Angle 45 SMOS mission 45 telescopes 45 COSMO SkyMed 45 nanosatellites 45 noctilucent clouds 45 ATLAS detector 45 stellar occultations 45 Ares IX rocket 45 Gemini Observatory 45 Solar Terrestrial Relations 45 SM4 45 sols 45 Ares Orion 45 ICO G1 45 Nasa Jet Propulsion 45 GloPac 45 geostationary orbits 45 Hayabusa 45 Fomalhaut b 45 Composite Infrared Spectrometer 45 Atlantis Undocks From 45 Remote sensing 45 lander robotic arm 45 Kepler #b 45 LSAM 44 Pan STARRS 44 Recovery Experiment SRE 44 closest flyby 44 Martian soil 44 polar orbiting 44 extrasolar planetary systems 44 HEO payloads 44 NASA Lunar Prospector 44 Earth Orbit LEO 44 infrared wavelengths 44 unmanned lunar 44 Space Capsule 44 Lunar Crater Observation 44 WISE infrared 44 Delfi C3 44 Thermal Emission Imaging 44 Stratellite 44 Cassini flybys 44 ESA Mars 44 Orbiting Carbon Observatory OCO 44 Saturnian system 44 lunar probes 44 Keck telescopes 44 MAVEN 44 ESA SMOS 44 Vehicle CEV 44 Panoramic Camera 44 neutral mass spectrometer 44 Itokawa 44 meteorological satellites 44 Colaprete 44 Moderate Resolution Imaging 44 X ray Telescope XRT 44 Herschel Space Telescope 44 Global Precipitation Measurement 44 lunar explorer 44 Ultraviolet Imaging Spectrograph 44 UA Lunar 44 Cassini Equinox 44 Mars rovers 44 remote sensing 44 W2A satellite 44 EarthCARE 44 DigitalGlobe WorldView 2 44 NASA WMAP 44 SSMEs 44 PSLV C6 44 regolith 44 TDRSS 44 spokesman Michael Braukus 44 lunar probe 44 twin rover Spirit 44 Virgin Galactic SpaceShipTwo 44 manned spacecraft 44 Planetary Transits 44 Fermi Telescope 44 telescopic camera 44 Envisat satellite 44 Lunar Surface 44 Atlas IIAS 44 ray Space Telescope 44 SRTM 44 NASA Lunar CRater 44 Space Agency 44 exoplanets planets 44 Interstellar Boundary Explorer 44 Evolution Explorer 44 QuikSCAT 44 starboard SARJ 44 radiometers 44 Infrared Telescope Facility 44 Mission TRMM satellite 44 remote sensing instruments 44 Orbiter spacecraft 44 Situ Resource 44 orbiting 44 GOES N 44 HEO payload 44 stationary lander 44 lunar rovers 44 exoplanet hunter 44 Quickbird 44 ExoMars 44 neutron spectrometer 44 STPSat 44 CubeSat 44 spectrometers 44 Cassini Huygens Mission 44 Keck Telescopes 44 Spitzer Space Telescopes 44 probe Huygens 44 PSLV C7 44 geo synchronous 44 Hayabusa probe 44 Neutral Mass Spectrometer 44 Cosmic Vision 44 Impactor 44 NASA Stardust NExT 44 Webb Space Telescope 44 MPCV 44 lidar instrument 44 Glonass navigation satellites 44 NAVSTAR Global Positioning System 44 sunlike star 44 Comet Halley 44 Spirit rover 44 Magnetic Imager HMI 44 Kaguya 44 Jean Luc Margot 44 spacecraft orbited 44 Radiation Belt 44 PPARC 44 Extrasolar Planet Observation 44 heliophysics 44 Shuttle Discovery 44 Solar Optical Telescope 44 Hubble Near Infrared 44 Lander robotic arm 44 e MERLIN 44 PSLV C9 44 Mars rovers Spirit 44 Solar Sail 44 planet Gliese #g 44 NASA Great Observatories 44 martian landscape 44 orbit GEO 44 Heliospheric Investigation 44 Yahsat 1A 44 Itokawa asteroid 44 Lunar Outpost 44 ImageLibrary 44 MINOS 44 comet particles 44 Origins Spectral Interpretation 44 radiotelescope 44 Resolution Stereo Camera 44 INSAT 3D 44 interstellar dust samples 44 photometry 44 CloudSat radar 44 Greenhouse Gases Observing 44 Rockot 44 MEarth 44 THEMIS mission 44 Robotic Exploration 44 SBSS Block 44 JCSAT 9 44 SECCHI 44 IceCube 44 MESSENGER MErcury Surface 44 spectroscopic measurements 44 THEMIS Images 44 MEASAT 3a 44 HiRise camera 44 microlensing events 44 LMCSS 44 Launch Scrubbed 44 microgravity experiments 44 Terrestrial Planet Finder TPF 44 submillimetre 44 meteoroid 44 Stardust comet 44 Igor Mitrofanov 44 VASIMR engine 44 filamentary structure 44 Aerojet propulsion 44 Aerosol Polarimetry Sensor 44 optical telescopes 43 COBE 43 Hyakutake 43 lunar orbiter Chang'e 43 comet Boethin 43 Samuel Oschin Telescope 43 Nasa Kepler 43 NASA Lunar Crater 43 geo synchronous transfer 43 GRACE satellites 43 Cancri e 43 electric ion propulsion 43 ASKAP 43 gravitational lenses 43 Mars Orbiter Laser Altimeter 43 Minotaur IV rocket 43 scatterometer 43 ATV Jules Verne 43 ESA Envisat satellite 43 SDSS III 43 X #B 43 Mars# 43 multiwavelength 43 Reusable Launch Vehicle 43 Sirangelo 43 SpaceX Falcon 43 Mössbauer spectrometer 43 ATV Johannes Kepler 43 thermal emission spectrometer 43 Characterization EPOCh 43 orbital insertion 43 Ball Aerospace 43 ICO G1 satellite 43 rover Spirit 43 Hinode spacecraft 43 MicroFUN 43 Pilot George Zamka 43 DEIMOS 43 HAMSAT 43 EVLA 43 Dnepr rocket carrying 43 GLONASS satellites 43 Solar System 43 mission Chandrayaan 43 BepiColombo mission 43 Heliophysics 43 Marsis 43 geosynchronous orbit 43 impactor spacecraft 43 SPACEWAY 3 43 GLONASS constellation 43 Helioseismic 43 Mars Descent Imager 43 Alphasat 43 astronomical objects 43 Hubble Ultra 43 airborne observatory 43 Spectrometers 43 asteroid Lutetia 43 Vinasat 43 Endeavour STS 43 orbiting satellites 43 RISAT 43 spectral bands 43 PSLV 43 earth orbiting satellites 43 LDCM 43 Cosmic Origins Spectrograph COS 43 Laser Interferometer Gravitational Wave 43 NOAA GOES 43 gamma ray observatories 43 Soyuz FG