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(Click for frequent words.) 75 Cryosat 67 ESA CryoSat 65 ICESat 62 CryoSat mission 62 GOCE 61 SMOS 61 MetOp 60 CryoSat satellite 57 COROT 56 SIRAL 56 Lunokhod 56 Orbiting Carbon Observatory 55 ESA SMART 55 CARTOSAT 55 radar altimeter 55 MARSIS 55 Envisat 55 Chandrayaan 54 Cassini Huygens 54 Rosetta spacecraft 54 ESA Rosetta 54 Galileo satellites 54 Earth Observation Programmes 54 Huygens mission 54 Ocean Salinity SMOS 54 Orbiter LRO 54 SCISAT 54 TanDEM X 54 HYLAS 54 GOCE satellite 53 LISA Pathfinder 53 Proba 2 53 RADARSAT 53 Servicing Mission 53 TacSat 53 OSTM Jason 2 53 Chandrayan 53 TerraSAR X 53 Lunar Reconnaissance Orbiter LRO 53 Sinosat 53 EUMETSAT 52 Planck satellite 52 CALIPSO 52 ill fated Beagle 52 Planck spacecraft 52 Jules Verne ATV 52 ESOC 52 Oceansat 52 YES2 52 Eurockot 52 Climate Experiment GRACE 52 Volker Liebig 51 KazSat 51 NASA COBE satellite 51 Orbiting Carbon Observatory OCO 51 GIOVE B 51 Proba 51 QuikSCAT 51 NEOSSat 51 polar orbiting 51 NASAs 51 SIRTF 51 LRO 51 ExoMars 51 ESA ERS 51 altimetry 51 Ocean Salinity 51 Kepler Mission 50 OrbView 50 SuitSat 50 Mars Reconnaissance Orbiter MRO 50 Resourcesat 50 SMOS mission 50 RISAT 50 BepiColombo 50 CloudSat 50 JWST 50 EPOCh 50 Astrosat 50 Landsat 50 ESA GOCE 50 SSETI Express 50 spacecraft 50 Huygens Probe 50 lunar probe Chang'e 50 EarthCARE 50 Galileo spacecraft 50 Wilkinson Microwave Anisotropy Probe 50 GPS IIF 49 Automated Transfer Vehicle 49 Eumetsat 49 Gaele Winters 49 ESA SMOS 49 NuSTAR 49 Orbiter MRO 49 HRSC 49 Huygens 49 Webb Telescope 49 Rosetta comet chaser 49 Plesetsk Cosmodrome 49 LCROSS mission 49 Highly Adaptable Satellite 49 Helios 2B 49 NASA EPOXI mission 49 Vinasat 49 Volker Liebig ESA 49 ExoMars mission 49 Russian Rokot booster 49 SMOS satellite 49 Mars Surveyor 49 Cryosat satellite 49 Cartosat 49 onboard Chandrayaan 49 NROL 49 Resourcesat 2 49 Tropical Rainfall Measuring 49 Phobos Grunt 49 EPOXI mission 49 ESA Envisat satellite 49 SCIAMACHY 49 weather satellite TIROS 49 orbiter 49 shuttle Endeavor 49 Sensing Satellite LCROSS 49 ESA Planck 49 Global Surveyor 49 particle physics detector 49 SAR Lupe 48 Envisat satellite 48 Galileo constellation 48 Ofeq 48 Giove B 48 NASA THEMIS 48 MetOp satellite 48 Astrium Satellites 48 LRO spacecraft 48 orbiting observatory 48 New Horizons spacecraft 48 APXS 48 planetary Transits 48 Huygens probe 48 NPOESS 48 LCROSS 48 Herschel Planck 48 Chang'e 48 Meteosat 48 Space Agency 48 Envisat satellites 48 SIM PlanetQuest 48 Oceansat 2 48 Foton M3 48 Mars# 48 geoid 48 Hylas 48 orbiting gamma ray 48 QuikScat 48 orbital maneuvers 48 LADEE 48 spaceborne 48 Prof Pillinger 48 DigitalGlobe WorldView 48 RADARSAT 2 48 scatterometer 48 Rosetta orbiter 48 MTSAT 48 laser altimeter 48 ESA Mars 48 WFC3 48 Mars lander 48 Gravity Probe B 48 Lunar Reconnaissance Orbiter 48 KSLV 1 48 Orbiter 48 NASA Stardust spacecraft 47 NASA LCROSS 47 FORMOSAT 47 Convection Rotation 47 Mars Pathfinder 47 polarimetric 47 Deep Impact eXtended Investigation 47 W3B 47 mission Chandrayaan 47 VIRTIS 47 Metop 47 Space Telescope GLAST 47 Global Precipitation Measurement 47 GPS IIR M 47 Earth Observing 47 MARSIS radar 47 Field Planetary Camera 47 C1XS 47 MTSAT 1R 47 NEEMO 47 Hubble Space Telescope HST 47 Foton M3 mission 47 PSLV C 47 THEMIS 47 Mars orbiter 47 THEMIS mission 47 LAGEOS 47 NASA Stratospheric Observatory 47 ocean salinity 47 Rockot launcher 47 Foton M2 47 NigeriaSat 47 Alpha Magnetic Spectrometer 47 DART spacecraft 47 Cosmic Microwave Background 47 NASA ICESat 47 lander 47 INSAT 4CR 47 Interior Laboratory GRAIL 47 GOSAT 47 Kepler spacecraft 47 LEOP 47 particle detector 47 Plesetsk 47 Insat 47 orbital rendezvous 47 Ocean Surface Topography 47 Nimiq 47 Smos 47 NIRSpec 47 SBIRS GEO 47 MISSE 47 COSMO SkyMed 47 Glonass satellites 47 Observatory STEREO 47 satellite GSAT 47 probe Chang'e 46 Chang'eI 46 ISRO Chandrayaan 46 WMAP satellite 46 ILS Proton 46 KAGUYA 46 ESA Herschel 46 COMSATBw 46 orbiting spacecraft 46 Express orbiter 46 Cassini Huygens spacecraft 46 Robotic Exploration 46 Landsat satellites 46 lunar orbiter Chang'e 46 NPOESS Preparatory Project 46 Taurus XL 46 Planck telescope 46 GOES O 46 Ulysses spacecraft 46 Comet Hartley 46 O OREOS 46 Jean Pierre Lebreton ESA 46 Soil Moisture 46 ExoMars rover 46 Meteorological Satellites 46 LightSail 46 SumbandilaSat 46 Astrium 46 Lunar Orbiter 46 Eyharts 46 WGS Block 46 Apstar 46 Planetary Transits 46 PSLV C# 46 Cosmic Origins Spectrograph 46 meteorological satellites 46 GOES N 46 comet Wild 46 infrared observatory 46 detect gravitational waves 46 Mercury flyby 46 Mission TRMM 46 GRACE satellites 46 Philae lander 46 RISAT 2 46 lunar orbiter 46 TDRS 46 Observatory SDO 46 Jupiter Icy Moons 46 Churyumov Gerasimenko 46 Spectrograph 46 Hubble servicing 46 Cartosat 2A 46 ARISSat 46 CBERS 46 Security GMES 46 ATV Johannes Kepler 46 Herschel telescope 46 radar altimetry 46 DubaiSat 46 Gravity Recovery 46 orbiting Hubble Space Telescope 46 Harmony Node 46 Daniel Sacotte 46 Vostok 3KA 46 flyby spacecraft 46 Cosmic Origins Spectrograph COS 46 Thales Alenia Space 46 Landsat Data 46 orbiting telescope 46 Japanese Kibo lab 46 communications satellite Kwangmyongsong 46 Lunar Prospector 46 ESA astronaut 46 RapidEye 46 STPSat 46 orbiters 46 orbit insertion 45 NanoSail D 45 Block 5D 45 nanosatellite 45 Hubble Servicing 45 Atlas 2AS 45 cosmic ray detector 45 Polar Lander 45 ISS Expedition 45 spacecrafts 45 E ELT 45 SeaWiFS 45 INSAT 3D 45 Antenna LISA 45 SSTL 45 Simonetta Di Pippo ESA 45 GLONASS satellites 45 EPOXI 45 Infrared Astronomy 45 Discovery STS 45 Rockot 45 ESA Huygens probe 45 NASA Cosmic Background 45 Glonass M 45 LOFAR 45 microsatellite 45 GeneSat 1 45 heaviest payloads 45 orbiting Mars 45 Colin Pillinger Beagle 45 EPOXI spacecraft 45 Titan flyby 45 remote sensing satellite Resourcesat 45 Halzen 45 TerraSAR X satellite 45 ESA 45 Professor Pillinger 45 infrared telescopes 45 Eutelsat KA SAT 45 SMOS Soil Moisture 45 GMES 45 Johannes Kepler 45 GIOVE 45 SpaceX Falcon 45 Solid Rocket Boosters 45 KA SAT 45 Alpha Magnetic Spectrometer AMS 45 telescope 45 LCROSS spacecraft 45 SINFONI 45 Planetary Camera 2 45 NASA Orbiting Carbon 45 D CIXS 45 AEHF 45 Stardust NExT 45 twin rover Opportunity 45 Mars Polar Lander 45 ESA Earth Observation 45 Chuck Dovale 45 Kiruna Sweden 45 Spacecraft Operations 45 Human Spaceflight Microgravity 45 Solar Orbiter 45 VINASAT 45 GOES R 45 NigComSat 45 remote sensing satellites 45 Beagle 45 ProtoStar II 45 NASA Wilkinson Microwave 45 Skynet 5C 45 AMSR E 45 ESA Envisat 45 swingby 45 Satellite GOSAT 45 gradiometer 45 DIXI 45 Solar Dynamics Observatory 45 Voyager spacecraft 45 Landsat satellite 45 GSAT 5P 45 orbiting observatories 45 HiRISE image 45 Mars landers 45 NASA Lunar Crater 45 EADS Astrium 45 Solid Liquid Mixtures 45 Resolution Stereo Camera 45 Mössbauer 44 Arianespace 44 Dnepr rocket 44 HIAPER 44 Stardust spacecraft 44 Shenzhou VI spacecraft 44 Hubble observations 44 Abdalati 44 Relations Observatory STEREO 44 ADM Aeolus 44 comet chaser 44 countdown dress rehearsal 44 FORCAST 44 Orbital Express 44 lunar explorer 44 geo synchronous 44 Eurockot Launch Services 44 Earth orbiting satellites 44 robotic explorer 44 Mars Lander 44 CoRoT 44 gamma ray spectrometer 44 Colin Pillinger 44 Comet Churyumov Gerasimenko 44 situ measurements 44 polar orbiting satellites 44 Astra 3B 44 Earth Observation 44 NASA STEREO 44 SinoSat 44 Infrared Astronomical Satellite 44 Atlantis STS 44 NASA rovers 44 PSLV C9 44 Kavoshgar 44 Hubble 44 interplanetary spacecraft 44 STEREO spacecraft 44 PSLV C8 44 airborne particles affect 44 Mars Orbiter 44 interplanetary missions 44 ATV Jules Verne 44 SHARAD 44 Deep Impact mission 44 DubaiSat 1 44 Characterization EPOCh 44 Nasa Mars Reconnaissance 44 IceBridge 44 GLAST 44 KOMPSAT 44 Epoxi 44 Lovell Telescope 44 NASA Cassini spacecraft 44 propellant loading 44 Glonass K 44 Chandrayaan II 44 IceCube Neutrino Observatory 44 UK DMC2 44 unmanned spacecraft 44 Mission TRMM satellite 44 Cassini orbiter 44 NFIRE 44 Bernard Foing 44 Apollo missions 44 radio occultation 44 UAVSAR 44 Pascale Ehrenfreund 44 De Winne 44 SPICAM 44 Titan flybys 44 Ares IX rocket 44 Delfi C3 44 cometary 44 Cubesat 44 Envisat ASAR 44 Hubble Space telescope 44 HARPS spectrograph 44 Mars Climate Sounder 44 ESA Cluster 44 Viking Lander 44 INSAT satellite 44 GLAST spacecraft 44 planetary missions 44 ESO VLT 44 Cassini flyby 44 exoplanet hunter 44 flyby 44 Martian rover 44 Lunar Crater Observation 44 Microscopy Electrochemistry 44 Spacebus 44 ST5 44 Aquarius SAC 44 ESA ASI 44 HiRISE 44 journal Meteoritics 44 pressurized module 44 SPIRE instrument 44 IKONOS 44 ESA Integral 44 shepherding spacecraft 44 Vehicle ATV 44 Jean Pierre Lebreton 44 Esrange 43 geostationary satellites 43 Ares Orion 43 MeerKAT 43 MINOS 43 ChemCam 43 airborne observatory 43 Aeronomy 43 Rockot launch 43 Herschel Space Telescope 43 UKIRT 43 JAXA 43 PSLV C7 43 Cosmodrome 43 Greenhouse Gases Observing 43 Le Gall 43 LMCSS 43 WISE mapped 43 GeoEye 43 lunar regolith 43 Advanced Microwave Scanning 43 comet Churyumov Gerasimenko 43 Shenzhou spacecraft 43 Lunar CRater Observation 43 Ariane rocket 43 Comet Tempel 1 43 Radarsat 43 enters lunar orbit 43 Continuity Mission LDCM 43 Southern Observatory ESO 43 ROCSAT 2 43 Gerhard Schwehm 43 Human Spaceflight 43 Infoterra GmbH 43 Air Force TacSat 43 Nasa spacecraft 43 Polarstern 43 Louis Stodieck 43 Orion spacecraft 43 Paulo Nespoli 43 Geo IK 43 ASTRA 1KR 43 JIMO 43 Curiosity rover 43 INSAT 4C 43 Planetary Fourier Spectrometer PFS 43 Space Launch Vehicle 43 GSLV F# 43 geodetic 43 ESRIN 43 acronym AMS 43 NASA rovers Spirit 43 astronomical observations 43 lunar surface 43 lunar soil 43 Array ALMA 43 CBERS 2B 43 Cosmo SkyMed 43 Foing 43 NASA Tropical Rainfall 43 Krimigis 43 Craig Tooley LRO 43 Synthetic Aperture Radar SAR 43 satellites 43 radar interferometry 43 Canadarm 43 KA SAT satellite 43 Lunar Exploration 43 entered lunar orbit 43 STIS 43 Keck Interferometer 43 NASA Lunar Reconnaissance 43 manned Shenzhou 43 Europa Orbiter 43 GSLV rocket 43 Total Ozone Mapping 43 orbiting Saturn 43 astronomical telescope 43 Endeavour STS 43 Sumbandila 43 Ares I. 43 NASA QuikScat satellite 43 MAVEN 43 INSAT 4B 43 HARPS spectrograph attached 43 OrbView 3 43 Glonass 43 CALIPSO satellites 43 Cloud Aerosol Lidar 43 Mission SRTM 43 Enceladus flybys 43 Interstellar Boundary Explorer 43 AKARI 43 SARSAT 43 Kaguya 43 Spacecraft 43 Laboratory MSL 43 infrared astronomy 43 Stratospheric Observatory 43 Starsem 43 Alphasat 43 NASA ESA Hubble 43 Geosynchronous Satellite Launch Vehicle 43 AMASE 43 SOHO spacecraft 43 Centaur rocket 43 astronauts Scott Parazynski 43 geostationary 43 laser altimetry 43 NPO Lavochkin 43 Phoenix lander 43 unmanned lunar 43 orbital insertion 43 ENVISAT 43 interferometer 43 Meteorological Satellite 43 neutron spectrometer 43 Goce 43 KamLAND 43 Apophis asteroid 43 Jupiter flyby 43 astrometric 43 geostationary satellite 43 Herschel Space 43 Yasny 43 Galilean satellites 43 Planck observatory 43 ton truss 43 nanosatellites 43 Mars CRISM 43 RESOURCESAT 43 Ice Coring 43 NASA Far Ultraviolet 43 Kepler observatory 43 SBSS satellite 43 NOAA GOES 43 Vehicle PSLV C9 43 HARPS N 43 unmanned rover 43 Nasa Deep Impact 43 TDRS K 42 Daniel Sacotte ESA 42 GeoForschungsZentrum Potsdam 42 twin rovers 42 Jean Jacques Dordain 42 spacecraft thrusters 42 ESTRACK 42 director Chuck Dovale 42 Satish Dhawan Space 42 Instrument OMI 42 Mars Pathfinder lander 42 Anisotropy Probe WMAP 42 Telespazio 42 Sojourner rover 42 Anik F3 42 Heterodyne Instrument 42 LORRI 42 Hayabusa probe 42 COROT satellite 42 Megha Tropiques 42 comet nucleus 42 infrared spectrograph 42 Recovery Experiment SRE 42 Insat 4CR 42 OSIRIS REx 42 Shallow Subsurface Radar 42 Fomalhaut b 42 Compton Gamma Ray 42 COBE satellite 42 Phobos Grunt mission 42 ESA Proba 42 Square Kilometre Array 42 THEMIS Images 42 Thales Alenia 42 orbital observatory 42 LROC 42 GLONASS M 42 shuttle Atlantis 42 Rokot booster rocket 42 P/# A2 42 Terrestrial Planet Finder 42 TRMM 42 IBEX spacecraft 42 Advanced LIGO 42 Venusian surface 42 Russia Khrunichev 42 asteroid Eros 42 Hinode 42 twin Voyager spacecraft 42 ASTRA 1M 42 Yaogan 42 GPS Block IIF 42 Synthetic Aperture Radar 42 cosmic microwave background 42 gaseous planet 42 ESA XMM Newton 42 robotic spacecraft 42 OCO 42 GLONASS 42 Rignot 42 Sensing Satellite 42 National d' Etudes 42 PSLV 42 GSLV 42 GSLV D3 rocket 42 retroreflector 42 lunar orbiters 42 JDEM 42 ICESCAPE 42 Jacques Laskar 42 interferometric synthetic aperture radar 42 Alexander Samokutyayev 42 Square Kilometre Array SKA 42 Skynet 5B 42 LRO LCROSS 42 Oberpfaffenhofen 42 Mars Odyssey spacecraft 42 Laser Interferometer Space 42 agency Roskosmos 42 Sojourner Rover 42 Insat 4C 42 Geoscience Laser Altimeter 42 Itokawa 42 Preston Burch 42 Baikonur Kazakhstan 42 manager Gerhard Schwehm 42 comet flyby 42 Shuttle Radar Topography 42 Redu Belgium 42 Saturnian moon Titan 42 NASA Kepler telescope 42 INSAT 3A 42 Flyby spacecraft 42 JPSS 42 Infrared Pathfinder Satellite 42 Commander George Zamka 42 X ray spectrometer 42 Space Telescope 42 WorldView 42 NASA Stardust NExT 42 Foton spacecraft 42 ASKAP 42 Comet #P/Churyumov-Gerasimenko 42 Infrared Astronomy SOFIA 42 Bob Ess 42 Martian lander 42 Shenzhou VIII 42 radar altimeters 42 neutrino detectors 42 telescopic observations 42 Comet Hartley 2 42 Orion Crew 42 Hadow 42 Phobos 42 ship Akademik Fyodorov 42 DISR 42 Pirs docking compartment 42 Operations Centre ESOC 42 Astrium GmbH 42 AEHF satellite 42 rover Opportunity 42 scientist Colin Pillinger 42 Shepherding Spacecraft 42 Envisat Advanced Synthetic Aperture 42 NASA WMAP 42 Solar Dynamics 42 Aboard Endeavour 42 Professor Colin Pillinger 42 Diviner instrument 42 XMM Newton 42 Space Shuttle Discovery 42 MErcury Surface Space ENvironment 42 Aboard Atlantis 42 Lutetia 42 Kliper 42 Mars Odyssey orbiter 42 NASA Solar Terrestrial 42 Mars Color Imager 42 moons orbiting Saturn 42 aboard Envisat 42 orbiter Cassini 42 InSAR 42 Spaceguard 42 THEMIS satellites 42 Planck 42 Andrea Accomazzo 42 Yuri Lonchakov 42 POES satellites 42 Ångström 42 Cosmic Background Explorer 42 WMAP 42 Simonetta Di Pippo 42 Deep Impact comet 42 Chinasat 6B 42 Astronaut Julie Payette 42 MEASAT 3a 42 Mars Odyssey 42 STORRM 42 adaptive optics 42 Mars Atmosphere 42 Martian surface 42 Space Shuttle Endeavor 42 lander Beagle 2 42 Turksat 4A 42 orbiter lander 42 asteroid Itokawa 42 AMSAT NA 42 comet #P/Churyumov-Gerasimenko 42 Anisotropy Probe 42 asteroid Lutetia 42 Medspiration 42 Viking landers 42 NASA Landsat 42 Yinghuo 1 42 Hubble Space 42 Cassini 42 Hubble gyroscopes 42 Russian Dnepr rocket 42 Beidou 42 reionization 42 lunar orbiter Chandrayaan 42 Mastcam 41 lunar meteorites 41 ELM PS 41 Yannick d' Escatha 41 probe Huygens 41 STSS Demo 41 ATLAS detector 41 lunar crater 41 WISE infrared 41 satellites orbiting Earth 41 Junichiro Kawaguchi 41 Jupiter Icy Moons Orbiter 41 Mars rovers Spirit 41 NASA Cassini 41 Hubble Space Telescope 41 remotely sensed 41 Martian arctic 41 spacecraft Shenzhou 41 AATSR 41 TecSAR 41 Orbit Validation IOV 41 Jean Yves Le Gall 41 Shenzhou V spacecraft 41 David Southwood ESA 41 Skynet 5A 41 OSIRIS Rex 41 SELENE 41 M Annadurai 41 Heliophysics 41 Soyuz rocket 41 MEASAT 41 INSAT satellites 41 geosynchronous 41 Moon Mineralogy Mapper M3 41 W2A satellite 41 Robotic Arm 41 Biomedical Problems 41 Bernhard von Weyhe 41 scientist Bernard Foing 41 extrasolar planet 41 Cosmonaut Yuri Gagarin 41 vehicle PSLV C# 41 equatorial orbit 41 NASA Deep Impact 41 Cosmic Microwave Background CMB 41 Impact Probe MIP 41 Huygens lander 41 communication satellite GSAT 41 Proton Breeze M 41 Ken Bowersox 41 Exploration Vehicle 41 Jennifer Trosper mission 41 Spacelab 41 NASA Aqua 41 aboard SpaceX Falcon 41 HyShot 41 spectrographs 41 Akademik Fyodorov 41 ORBIMAGE 41 Rassvet 41 CNES 41 ESA ESTEC 41 Minotaur IV 41 Enceladus flyby 41 Soyuz Fregat rocket 41 polarimetry 41 NASA MESSENGER 41 MN4 41 Satellite Launch Vehicle 41 TDRSS 41 ESTEC 41 celestial observations 41 Reconnaissance Orbiter 41 Solar Terrestrial Relations 41 lunar orbit 41 EGRET 41 Ed Weiler NASA 41 Agency JAXA 41 ionospheric 41 deorbiting 41 Kibo Japanese 41 ESA Huygens 41 SBIRS HEO 41 HAMSAT 41 geosynchronous satellite 41 Sangtuda 41 Kopernikus 41 #/#-ton truss 41 synthetic aperture radar 41 Very Large Telescope 41 Taepo Dong 41 smallest exoplanet 41 Insat 4A 41 W2M satellite 41 interstellar dust samples 41 Minotaur rocket 41 lunar spacecraft Chandrayaan 41 IFREMER 41 deorbit burn 41 Wideband Global 41 Mars rover Curiosity 41 Conductivity Analyzer 41 Soyuz TMA #M 41 lunar probe 41 Moon Mineralogy Mapper 41 GRAIL 41 lidar instrument 41 Zvezda module 41 Tunguska asteroid 41 spacecraft Chandrayaan 1 41 GFZ 41 CoRoT satellite 41 Robotic Lunar Exploration 41 Yarkovsky effect 41 Y1A 41 FASTSAT 41 GSLV D3 41 narrowband tactical 41 Shenzhou VII 41 Ares IX 41 NASA Goddard 41 Mini SAR 41 Vostok spacecraft 41 Webb Space Telescope 41 GMES Space 41 Nasa Mars Odyssey 41 Kibo module 41 NASA Moon Mineralogy 41 Scatterometer 41 Sputnik satellite 41 Cosmic Background Explorer COBE 41 AMPERE 41 Mini TES 41 Atlantis Undocks From 41 Commander Dmitry Kondratyev 41 GPS IIR 41 VLBI 41 Pillinger 41 particle collisions 41 Jules Verne Automated Transfer 41 EGNOS 41 Fregat upper stage 41 SpaceshipTwo 41 PSLV rocket 41 spokesman Franco Bonacina 41 Huygens descent 41 Atlas IIAS 41 Cartosat 2B 41 paleoclimate 41 RQ# 41 Alpha Particle 41 PPARC 41 DMSP F 41 DEIMOS 41 Cargo Launch Vehicle 41 Fotino 41 W2A 41 spectroscopic measurements 41 INSAT 3E 41 N. Rathnasree 41 Moessbauer spectrometer 41 Gamma ray Large 41 Soyuz FG 41 COBE 41 robotic rover 41 Taepodong 41 GloPac 41 Asteroid Itokawa 41 Gravity Probe 41 Mössbauer spectrometer 41 Saturnian system 41 Gliese #d 41 Nuclear Spectroscopic Telescope Array 41 geo synchronous transfer 41 unmanned Shenzhou 41 orbital 41 aboard Vostok 41 Ariane launcher 41 Pirs module 41 particle physics experiment