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(Click for frequent words.) 75 spacecraft 68 crewed spacecraft 65 spaceships 65 orbital rendezvous 65 Voyager probes 64 Mars Pathfinder 64 unmanned probes 64 orbiters 64 spaceship 63 lunar landers 63 Mars landers 63 Yinghuo 1 63 Nasa spacecraft 63 satellites orbiting Earth 63 Shenzhou spacecraft 62 robotic rovers 62 Sojourner rover 62 Voyager spacecraft 62 lunar orbiters 62 reusable spacecraft 61 hypersonic speeds 61 interplanetary missions 61 spaceward 61 orbiter 61 interplanetary spacecraft 61 NASA rovers 60 robotic probes 60 Soyuz 60 unmanned spacecraft 60 manned spacecraft 60 Orbiters 59 manned lunar missions 59 manned spaceships 59 BepiColombo 59 lunar rovers 59 spacecraft orbiting 59 lunar missions 59 Opportunity rovers 59 IBEX spacecraft 59 uncrewed 59 manned Shenzhou 58 robotic explorers 58 Churyumov Gerasimenko 58 Martian rovers 58 geo synchronous 58 satellites 58 Foton spacecraft 58 Solar TErrestrial RElations Observatory 58 dexterous robot 58 robotic explorer 58 Cassini Huygens 58 Rosetta spacecraft 58 Canadarms 58 NASAs 58 lunar landings 58 Viking landers 58 STEREO spacecraft 58 Martian rover 58 outer space 58 rovers Spirit 58 Apollo missions 57 Soyuz rockets 57 spacecraft orbited 57 Mars rovers 57 Mars orbiter 57 rover Sojourner 57 INSAT 4CR 57 Lunar Rover 57 lunar surface 57 scramjets 57 GSLV rockets 57 Chang'eI 57 Mars Pathfinder lander 57 GOCE satellite 57 Hubble Space Telescope HST 57 Earth orbiting satellites 57 Mars rovers Spirit 57 unpiloted 57 rovers 57 experimental payloads 57 orbiting Hubble Space Telescope 57 Curiosity rover 57 SpaceX Dragon capsule 57 interstellar particles 57 spaceplane 57 Galileo satellites 56 robotic spacecraft 56 Soyuz rocket 56 astronauts 56 Phobos Grunt 56 Spacecraft 56 orbiting spacecraft 56 geostationary orbits 56 Kliper 56 RSRMs 56 twin Voyager spacecraft 56 probe Chang'e 56 Dyna Soar 56 SpaceX Dragon 56 Mars Reconnaissance Orbiter MRO 56 SSMEs 56 orbiting telescopes 56 moonbase 56 shuttle orbiter 56 probe Huygens 56 robotic landers 56 lander rover 56 lunar orbiter 56 Manned missions 56 orbiting observatories 56 ExoMars rover 56 orbit 56 Lunar Orbiter 56 outer planets 56 Express AM# 56 Viking orbiters 56 Orbiter MRO 55 EELVs 55 dexterous robots 55 Martian orbit 55 planetary Transits 55 retroreflector 55 robotic rover 55 Stardust spacecraft 55 lunar equator 55 Hubble Space telescope 55 highly elliptical orbits 55 Jupiter Icy Moons 55 comets asteroids 55 manned lunar 55 moons Phobos 55 Mars moon Phobos 55 unmanned lunar orbiter 55 deorbiting 55 SpaceLoft XL rocket 55 LRO spacecraft 55 space shuttles 55 Solid Rocket Boosters 55 Earth orbit 55 Rosetta orbiter 55 thruster firings 55 Martian lander 55 Mars Orbiter 55 manned spaceship 55 Minotaur rocket 55 NASA 55 cryogenic engines 55 Space Shuttle 55 NASA rovers Spirit 55 heavier payloads 55 ion thrusters 55 orbital velocity 55 nanosatellites 55 infrared telescopes 55 Martian terrain 55 Orion spacecraft 55 New Horizons spacecraft 55 Virgin Galactic unveils 55 orbiting 55 rocket thrusters 55 reentry capsule 55 NPO Lavochkin 55 Soyuz TMA spacecraft 55 lander 55 detect gravitational waves 55 NASA Stardust spacecraft 55 suborbital spacecraft 54 Mars orbiters 54 Globalstar satellites 54 CALIPSO 54 docking compartment 54 GLAST spacecraft 54 Chandrayaan 54 Satellite Launch Vehicle 54 Chandrayan 54 geo stationary orbit 54 manned orbital 54 Foton M3 54 TDRS K 54 ROCSAT 2 54 SpaceShip Two 54 meteorological satellites 54 Space Capsule 54 Relations Observatory STEREO 54 CubeSats 54 payloads 54 Apollo lunar landings 54 CARTOSAT 54 VASIMR 54 SpaceX Dragon spacecraft 54 SpaceshipTwo 54 shuttlecraft 54 Shenzhou spaceships 54 H IIA 54 International Space Station 54 landers 54 Launch Abort System 54 Mars Odyssey spacecraft 54 LISA Pathfinder 54 Lunokhod 54 MESSENGER spacecraft 54 KazSat 54 ExoMars mission 54 Galileo spacecraft 54 Glonass K 54 Oceansat 2 54 Proba 2 54 space shuttle 54 spacecraft Chandrayaan 1 54 X ray telescopes 54 geosynchronous satellites 54 retrorockets 54 starships 54 ion propulsion 54 Launch Vehicle 54 hypersonic scramjet 54 LightSail 54 hypersonic missiles 54 NuSTAR 54 NFIRE 54 sub orbital spaceflight 53 Soyuz capsules 53 Impactor 53 Reusable Launch Vehicle 53 orbital insertion 53 scramjet engines 53 rocketships 53 PSLV rocket 53 flyby spacecraft 53 Fregat upper stage 53 ATV Jules Verne 53 Shenzhou VI 53 Lunar Reconnaissance Orbiter LRO 53 lunar rover 53 Mars rovers Opportunity 53 highly elliptical orbit 53 interstellar dust samples 53 Cosmodrome 53 manned Soyuz 53 Express orbiter 53 SpaceLoft XL 53 Martian surface 53 ST5 53 electric ion propulsion 53 lunar probes 53 Soyuz spacecraft 53 Cryosat 53 JIMO 53 radioisotope thermoelectric generators 53 suborbital rockets 53 spacecraft SpaceShipTwo 53 robot rovers 53 Viking Lander 53 Antenna LISA 53 orbiting Mars 53 circumlunar 53 Pirs docking compartment 53 onboard Chandrayaan 53 Orbiter LRO 53 neutrino detectors 53 Hayabusa spacecraft 53 Shenzhou V 53 GSLV D3 rocket 53 orbiter lander 53 GOCE 53 Lunar Outpost 53 Lunar Roving Vehicle 53 sub orbital 53 interplanetary probes 53 Horizons spacecraft 53 KSLV 1 53 Comet Hartley 2 53 orbit GEO 53 Lunar Prospector 53 ramjets 53 spaceports 53 NASA MESSENGER spacecraft 53 Rockot launch 53 HiRISE camera aboard 53 ESA Huygens probe 53 NAVSTAR Global Positioning System 53 lunar lander 53 Foton M2 53 Philae lander 53 SPHERES 53 ARCTUS 53 geosynchronous satellite 53 Huygens lander 53 Galileo constellation 53 GIOVE B 53 THEMIS spacecraft 53 RISAT 53 spokesman Michael Braukus 53 manned lunar landing 53 Ariane launcher 53 Jules Verne ATV 53 geo synchronous orbit 53 satellites orbiting 53 SMOS mission 53 winged spacecraft 53 remote sensing satellites 53 BepiColombo mission 53 Saturnian moon Titan 52 spacecraft Cassini 52 orbital 52 Shenzhou VII 52 lunar landing 52 Apollo Skylab 52 LEO satellites 52 planetary surfaces 52 atmospheric reentry 52 Resourcesat 2 52 STSS Demo 52 Nasa Mars Reconnaissance 52 Russian Soyuz 52 lunar orbit 52 extravehicular activities 52 MPCV 52 asteroid Itokawa 52 Spirit Mars rover 52 robotic Canadarm 52 gamma ray observatory 52 TanDEM X 52 PSLV C 52 spacecraft Hayabusa 52 micrometeoroids 52 NASA Stratospheric Observatory 52 shuttle 52 NASA Gamma ray 52 NASA THEMIS 52 Jupiter Icy Moons Orbiter 52 CHIPSat 52 Orbiter 52 orbiting satellites 52 NROL 52 Vostok spacecraft 52 MER rovers 52 Shenzhou capsule 52 Cometary 52 hypersonic jet 52 maneuvering thrusters 52 PSLV C6 52 exhaust plume 52 MTSAT 1R 52 NASA Lunar Prospector 52 fiery reentry 52 Red Planet 52 shepherding spacecraft 52 GLONASS satellites 52 nanosatellite 52 Saturn Cassini 52 Terrestrial Planet Finder 52 alien civilizations 52 Glonass satellites 52 spacesuits 52 geostationary communications 52 orbiter Cassini 52 EPOXI mission 52 Nasa 52 Rosetta comet chaser 52 Virgin Galactic SpaceShipTwo 52 outermost planets 52 Cosmonaut Yuri Gagarin 52 Lt. Col. Yang Liwei 52 Space Station 52 particle beam 52 Soyuz FG 52 SMOS 52 Glonass M 52 Cargo Launch Vehicle 52 INSAT satellite 52 Climate Experiment GRACE 52 O OREOS 52 hypervelocity 52 NASA twin rovers 52 LSAM 52 WISE spacecraft 52 Sacred Vessel 52 Kurs automated 51 spaceliner 51 LADEE 51 Shenzhou V spacecraft 51 Mars Orbiter Camera 51 APXS 51 Mir Space Station 51 twin rovers Spirit 51 Orion Ares 51 Cygnus spacecraft 51 Ranging spacecraft 51 Recovery Experiment SRE 51 Ulysses spacecraft 51 comet particles 51 faraway planets 51 stationary lander 51 Stardust capsule 51 GPS 2R 51 astronauts Jing Haipeng 51 martian atmosphere 51 supersonic aircraft 51 Resourcesat 51 twin rovers 51 polar orbits 51 heaviest payloads 51 SSETI Express 51 geosynchronous orbit 51 Spacesuits 51 Vostok 3KA 51 TDRS satellites 51 Space Shuttles 51 Chandrayaan II 51 heatshield 51 unmanned Progress 51 scramjet engine 51 Dnepr rocket 51 Mars Lander 51 orbital maneuvers 51 spaceborne 51 ESA GOCE 51 hypersonic 51 Automated Transfer Vehicle 51 taikonaut 51 Rockot launcher 51 Comet Churyumov Gerasimenko 51 commander Dmitry Kondratyev 51 Pegasus XL 51 Minotaur IV 51 Atlantis Undocks From 51 unpowered 51 aeroshell 51 orbital maneuvering 51 extraterrestrial civilizations 51 INSAT satellites 51 Skynet 5C 51 shuttle Endeavor 51 Hubble telescope 51 Titan IVB 51 interstellar dust grains 51 Progress resupply 51 ATV Johannes Kepler 51 GSAT 5P 51 icy comets 51 Kepler spacecraft 51 Sergei Korolev 51 Solar Terrestrial Relations 51 GOES N 51 geo stationary satellites 51 C NOFS 51 GSLV rocket 51 COROT 51 Zvezda module 51 Shuttle Endeavor 51 meteoroid 51 X ray observatory 51 geosynchronous satellite launch 51 THEMIS satellites 51 ALMA antennas 51 PSLV C# rocket 51 EZ Rocket 51 thrusters 51 MARSIS radar 51 simulated lunar 51 GeneSat 51 starboard SARJ 51 laser altimeter 51 moonwalkers 51 mission Chandrayaan 51 Cubesat 51 suborbital spaceships 51 SpaceX Falcon 9 51 Soyuz capsule 51 Highly Adaptable Satellite 51 scramjet 51 spacecraft Shenzhou 51 venerable Soyuz rocket 51 Infrared Astronomy SOFIA 51 RADARSAT 2 51 Shenzhou VII spacecraft 51 spokesman Igor Panarin 51 Observatory SDO 51 Hubble Servicing 51 PSLV C# 51 Jovian moons 51 microgravity experiments 51 Jupiter flyby 51 NASA EPOXI mission 51 CBERS 2B 51 Huygens descent 51 Shackleton crater 51 Deep Impact comet 51 GSLV D3 51 rover Opportunity 51 Venus Climate Orbiter 51 ion propulsion engines 51 spaceflyers 51 asteroids 51 lunar probe Chang'e 51 Shepherding Spacecraft 51 Cartosat 2B 51 Epoxi 51 Soyuz booster 50 stargates 50 Pluto Kuiper Belt 50 ballistic trajectory 50 SIRTF 50 orbiting observatory 50 Herschel Planck 50 reentries 50 Japan Hayabusa spacecraft 50 Helios 2B 50 tumbleweed rover 50 PSLV 50 Mars Rover 50 Virgin Galactic spaceship 50 preset orbit 50 polar orbiting 50 Earth orbit LEO 50 outerspace 50 GLONASS constellation 50 Air Force Evolved Expendable 50 Observatory STEREO 50 Apollo astronauts 50 CBERS 50 SpaceX Falcon 50 irregularly shaped asteroid 50 deorbit burn 50 wheeled rovers 50 Lunar Module 50 manned missions 50 Hayabusa probe 50 stratospheric balloon 50 Convection Rotation 50 Weightless Wonder 50 Cloud Aerosol Lidar 50 Kounotori vehicle 50 LCROSS spacecraft 50 remote sensing satellite Resourcesat 50 Ariane launchers 50 robotic lander 50 SpaceLoft 50 GPS IIF 50 Hubble Telescope 50 deorbit 50 HiRISE camera 50 LRO LCROSS 50 Huygens Probe 50 astronomical observatories 50 Dragon capsule 50 Soviet cosmonauts 50 lunar module 50 Solar Dynamics Observatory 50 ESA Mars 50 GOES O 50 Servicing Mission 50 DubaiSat 1 50 stratospheric airship 50 Comet Halley 50 comet Churyumov Gerasimenko 50 asteroid 50 Ares IX rocket 50 Interior Laboratory GRAIL 50 SumbandilaSat 50 lunar spacecraft 50 AERONET 50 Ariane rocket 50 Interplanetary Internet 50 propellant tanks 50 Vehicle ATV 50 suborbital spaceship 50 CAPE CANAVERAL Astronauts 50 NASA STEREO 50 inter planetary 50 Mars Opportunity rover 50 martian surface 50 ESA SMART 50 Geo synchronous 50 Hinode spacecraft 50 Laboratory MSL 50 Mars Reconnaissance Orbiter 50 KBOs 50 Galactic cosmic rays 50 SBSP 50 Shenzhou capsules 50 GOES satellites 50 Upsilon Andromedae 50 hydrazine thrusters 50 INSAT 4B 50 Lopota 50 X ray observatories 50 Apophis asteroid 50 payload fairings 50 Shenzhou VIII 50 Titan flyby 50 twin rover Spirit 50 lunar orbits 50 FORMOSAT 50 panchromatic camera 50 ADM Aeolus 50 inhabitable planets 50 microbots 50 VTOL aircraft 50 crewed missions 50 geo synchronous transfer 50 rover Spirit 50 SRBs 50 KAGUYA 50 radar altimeter 50 Satellite Launch Vehicle GSLV 50 Rockot 50 Plesetsk 50 Geosynchronous 50 PSLV C9 50 KSLV 50 radioisotope thermoelectric generator 50 SpaceShip 50 NASA Cosmic Background 50 Martian landscape 50 Mars orbiting spacecraft 50 BepiColombo joint 50 planet magnetosphere 50 Global Surveyor 50 NEOSSat 50 NASA Kepler telescope 50 infrared spectrometers 50 interplanetary 50 PSLV C7 50 Lunar Excursion Module 50 HAMSAT 50 NASA ICESat 50 NIRSpec 50 DIXI 50 Taurus XL 50 terra forming 50 LORRI 49 Messenger spacecraft 49 Optical Spectroscopic 49 Mars rover 49 Thermal Emission Spectrometer 49 unmanned 49 Planck satellite 49 planetary missions 49 Itokawa asteroid 49 Automated Transfer Vehicles 49 Laser Interferometer Space 49 pressurized module 49 Deep Impact probe 49 alien spaceships 49 SpaceShip One 49 Cartosat 2A 49 lunar orbiter Chang'e 49 EPOXI spacecraft 49 Kibo module 49 Divine Vessel 49 Discoverys 49 infrared telescope 49 PSLV C8 49 Multi Purpose Crew 49 WK2 49 coronal mass ejections CMEs 49 extraterrestrial UFOs 49 MetOp satellite 49 Kazakhstan Baikonur Cosmodrome 49 Insat 3A 49 cryogenic engine 49 Phobos Grunt mission 49 microshutters 49 geostationary satellites 49 unpiloted aircraft 49 SpaceShipTwo SS2 49 impactor spacecraft 49 SMOS Soil Moisture 49 Minotaur IV rocket 49 simulated Martian 49 Venusian surface 49 Pilot George Zamka 49 exoplanetary 49 geosynchronous 49 celestial phenomena 49 navigate autonomously 49 polar orbiting satellites 49 comet chaser 49 orbiting ISS 49 Michibiki 49 mere fly bys 49 geosynchronous Earth 49 lunar probe 49 WMAP satellite 49 Geo IK 49 Odyssey orbiter 49 Hubble Space Telescope 49 entire Milstar constellation 49 origami masters 49 Mission SRTM 49 KODAK CCD Image Sensors 49 MPLM 49 Planck spacecraft 49 Shenzhou VI craft 49 Comet #P/Churyumov-Gerasimenko 49 Impact Probe MIP 49 Launch Scrubbed 49 CARTOSAT 2A 49 Ocean Salinity 49 INSAT 3A 49 LightSail 1 49 asteroid Steins 49 Geosynchronous Satellite Launch Vehicle 49 Mercury Redstone 49 unmanned airships 49 reusable suborbital 49 Cassini flyby 49 Martian craters 49 Shuttle Docks 49 suborbital 49 origins spectrograph 49 Kosmos 3M rocket 49 Kepler 9c 49 ESA ERS 49 polar orbit 49 moon Io 49 Uninhabited Aerial Vehicle 49 EVAs 49 geostationary earth 49 Crew Exploration 49 Yury Gagarin 49 Jing Haipeng 49 ion thruster 49 hypergolic 49 Cartosat 49 lunar spacecraft Chandrayaan 49 Glonass navigation satellites 49 Reflection Radiometer 49 LAGEOS 49 Orbital Express 49 urine recycler 49 Lunar Lander 49 OSIRIS REx 49 moon Phobos 49 ferry SpaceShipTwo 49 orbital altitude 49 Solar Sail 49 Astronauts inspect 49 HiRise camera 49 orbiting Hubble telescope 49 ISRO 49 windshield wiper maneuver 49 Vehicle CEV 49 Kazakhstan Baikonur cosmodrome 49 celestial observations 49 SBSS Block 49 Permanent Multipurpose Module PMM 49 twin rover Opportunity 49 moon Deimos 49 undocks 49 lunar soil 49 Gravity Probe B 49 Space Agency 49 LRO 49 asteroid flyby 49 equatorial orbit 49 lunar regolith 49 GSLV 49 Mercury Gemini 49 spaceflight 49 Shenzhou manned 49 Bowersox Pettit 49 lunar orbiting spacecraft 49 lunar exploration 49 D CIXS 49 SuitSat 49 Suborbital 49 ExoMars Trace Gas 49 Proton Breeze M 49 coronagraph 49 NASA satellites orbiting 49 dexterous humanoid robot 49 aboard ESA Envisat 49 Linear Acceleration 49 ETs 49 JAXA 49 lunar expeditions 49 Shenzhou VI capsule 49 countdown dress rehearsal 49 WhiteKnight Two 49 ExoMars 49 Sinosat 49 airship 49 commander Leroy Chiao 49 Giove B 49 Taikonauts 49 MAVs 49 AEHF satellite 49 Ion propulsion 49 TIE fighter 49 MirCorp 49 shuttle orbiters 49 Mars 49 interferometers 49 Reaches Orbit 49 astrophysical phenomena 49 Yaogan 49 kg payload 49 Nasa Mars Odyssey 49 Orion Crew 49 redock 49 FASTSAT 48 NASA Voyager spacecraft 48 satellite Kwangmyongsong 2 48 Mars Surveyor 48 ESO VLT 48 carry heavier payloads 48 Interstellar Boundary Explorer 48 WhiteKnightTwo WK2 48 Satellite Launch 48 Fermi telescope 48 Alpha Particle 48 reconnaissance satellites 48 Eurobot 48 Stratellite 48 USVs 48 crawler transporter 48 Feitian 48 SMOS satellite 48 Shenzhou VI spacecraft 48 Pirs Docking Compartment 48 OGLE TR #b 48 Cassini Huygens spacecraft 48 astronauts Zhai Zhigang 48 rocket nose cone 48 robotic geologist 48 gamma ray telescope 48 Greenhouse Gases Observing 48 DragonLab 48 Scramjets 48 Orbital Sciences Corp 48 Kibo JPM JEM Pressurized 48 cosmic ray particles 48 solar flares 48 Shenzhou IV 48 interstellar distances 48 parachutes malfunctioned 48 Ares rocket 48 NASA Landsat 48 Flyby 48 High Resolution Imaging 48 indigenous cryogenic 48 Herschel Space Telescope 48 Iridium satellites 48 Block 5D 48 Orbital Debris 48 unpressurized cargo 48 planetary orbits 48 impactor 48 hydrazine propellant 48 Keck telescopes 48 Vehicle GSLV 48 SBSS satellite 48 hypersonic flight 48 aboard SpaceX Falcon 48 Jupiter Ganymede 48 xenon propellant 48 orbits 48 TerraSAR X 48 Itokawa 48 Earth asteroid Itokawa 48 Orion CEV 48 deorbited 48 rover 48 unmanned lunar 48 Space ENvironment GEochemistry 48 Geminga 48 HIAPER 48 Dragon spacecraft 48 Meridiani plains 48 Asteroid Itokawa 48 Shoemaker Levy 48 particle colliders 48 Mars lander 48 gamma ray observatories 48 Saturn V 48 spacefaring civilization 48 Eagle lunar lander 48 Dnepr rocket carrying 48 WhiteKnightTwo mothership 48 ultraviolet spectrograph 48 Evolution Explorer 48 VSS Enterprise 48 sentient robots 48 Climate Experiment SORCE 48 cometary impacts 48 Hayabusa 48 Lagrangian 48 defective gyroscope 48 neutrino particles 48 manned spacecraft Shenzhou VI 48 Huygens mission 48 Sun synchronous orbit 48 Perminov 48 tokamaks 48 Astro E2 48 Infrared Pathfinder Satellite 48 synchronous polar 48 Japanese Aerospace Exploration 48 situ measurements 48 unmanned Shenzhou 48 COSMO SkyMed 48 Deep Impact flyby spacecraft 48 spacefarers 48 Centre VSSC 48 exoplanets orbiting 48 Block IIF 48 Viking Orbiter 48 Soyuz launcher 48 spectroscopic measurements 48 ray Space Telescope 48 suborbital rocket 48 Aerosonde aircraft 48 X #As 48 NFIRE satellite 48 Centre VSSC Thiruvananthapuram 48 Mars Color Imager 48 Space Launch Vehicle 48 FGB nadir port 48 thruster rockets 48 icy moons 48 Martian crater 48 Opportunity Mars rovers 48 Vehicle PSLV C9 48 SCISAT 48 SOHO spacecraft 48 Compton Gamma Ray 48 Lunar Orbit 48 enters lunar orbit 48 Moller Skycar 48 jovian 48 SpaceDev Dream Chaser 48 IKAROS 48 Scramjet 48 cosmonaut Yuri Gagarin 48 rocket boosters 48 director Chuck Dovale 48 Comet Hartley 48 scanning electron microscopes 48 reconnaissance orbiter 48 THEMIS mission 48 Molniya 48 Lockheed Martin A# geosynchronous 48 drogue parachute 48 mineralogical mapping 48 Vinasat 48 orbiting gamma ray 48 Russian Zvezda module 48 pressurized rovers 48 GEochemistry 48 Soyuz TMA #M 48 cosmic collisions 48 Vehicle PSLV rocket 48 SELENE probe 48 lunar 48 geostationary satellite 48 spacefaring 48 exoatmospheric kill vehicle 48 Flyby spacecraft 48 Skylab 48 Orbital Module 48 Orbiter spacecraft 48 Soyuz craft 48 Glonass 48 Shuttle Discovery blasts 48 Comet 9P/Tempel 1 48 Apollo Lunar Module 48 Comet Tempel 1 48 ISS crewmembers 48 orbiting telescope 48 entered lunar orbit 48 microsatellites 48 TerraSAR X satellite 48 Insat 4B 48 spacesuit 48 Near Infrared Camera 48 duration spaceflights 48 Soyuz launchers 48 comet flyby 48 Leonardo Permanent Multipurpose 48 microgravity environment 48 reusable manned spacecraft 48 planets orbits 48 Atlas IIAS 48 stabilizing gyroscopes 48 spaceflights 48 twin STEREO spacecraft 48 Taurus XL rocket 48 GSLV Mk III 48 Crawler Transporter 48 ballistic trajectories 48 ESO telescopes 48 Russian Soyuz Fregat 48 MetOp 48 Epsilon Eridani 48 submersibles 48 ISS robotic arm