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(Click for frequent words.) 65 manned spacecraft 64 lunar missions 63 lunar exploration 62 manned spaceflight 61 human spaceflight 59 interplanetary missions 59 manned lunar 58 unmanned probes 57 Shenzhou spacecraft 56 crewed spacecraft 56 orbital rendezvous 56 manned lunar mission 56 Crew Exploration 56 ferrying astronauts 55 manned spaceship 55 unmanned lunar 55 lunar orbiter 55 astronauts 55 crewed missions 55 reusable spacecraft 55 spaceflight 54 Kliper 54 orbiters 54 lunar landers 53 manned lunar missions 53 Shenzhou VI 53 manned lunar landing 53 taikonaut 53 robotic rovers 53 Soyuz rockets 53 robotic spacecraft 53 Shenzhou VII 53 lunar outpost 53 Shenzhou V 53 unmanned spacecraft 53 planetary missions 53 NASA 52 astronaut Yang Liwei 52 manned spaceflights 52 unmanned lunar orbiter 52 robotic probes 52 Hubble servicing 52 Orion spacecraft 52 Jupiter Icy Moons 52 lunar orbiters 51 Ares rocket 51 Shenzhou orbital modules 51 suborbital spacecraft 51 dexterous robot 51 Shenzhou IV 51 Shenzhou spaceships 51 Shenzhou V spacecraft 50 spaceflights 50 lunar probe Chang'e 50 lunar probes 50 orbiting spacecraft 50 spacecrafts 50 sub orbital spaceflight 50 circumlunar 50 ExoMars mission 50 Sun Laiyan 50 spacecraft 50 Yang Liwei 50 mission Chandrayan 50 manned Shenzhou 50 Lunar Reconnaissance Orbiter LRO 50 manned Soyuz 50 spokesman Michael Braukus 50 Astrobotic 50 Apollo missions 49 Curiosity rover 49 manned orbital 49 spaceflyers 49 manned spaceships 49 unpiloted 49 lunar landings 49 robotic explorers 49 Orion capsule 49 NFIRE 49 unmanned 49 planetary exploration 49 International Space Station 49 Chang'eI 49 space shuttles 49 taikonauts 49 lunar expeditions 49 BepiColombo 49 Canadarms 49 Martian rover 49 astronaut 49 Shenzhou 49 Nasa 49 manned 49 NASAs 49 Jupiter Icy Moons Orbiter 49 Russian cosmonaut Yuri Gagarin 49 Taikonaut 49 Mars landers 49 probe Chang'e 49 spacefarers 49 interplanetary probes 48 spacewoman 48 unmanned rover 48 ExoMars rover 48 shuttle missions 48 aboard Skylab 48 Zhang Jianqi 48 Shenzhou capsule 48 space module Tiangong 48 Soyuz TMA spacecraft 48 SpaceX Falcon 9 48 ROCSAT 2 48 Vostok spacecraft 48 mission Chandrayaan 48 moonbase 48 Xie Mingbao 48 Yury Gagarin 48 lunar explorer 48 Cassini Huygens 48 uncrewed 48 Qi Faren 48 lunar 48 SpaceX Dragon capsule 48 Space Shuttle 48 Chandrayaan 48 pressurized compartment 48 Earth orbit 48 Shenzhou VI capsule 48 Nikolai Budarin 48 Fei Junlong 48 planetary explorations 47 heaviest payloads 47 Ares rockets 47 spacewalks 47 lunar lander 47 Phobos Grunt 47 NASA rovers 47 space shuttle 47 manned spacecraft Shenzhou 47 astronauts Jing Haipeng 47 Minotaur IV 47 Orbital Express 47 lunar probe 47 ExoMars 47 landers 47 manned spacecraft Shenzhou VI 47 EELVs 47 suborbital spaceflight 47 lunar rover 47 Huang Chunping 47 Japanese astronaut Takao 47 lunar landing 47 cryogenic engines 47 KSLV 1 47 Orbital Space 47 VASIMR 47 Taikonauts 47 scramjets 47 Terrestrial Planet Finder 47 Lt. Col. Yang Liwei 47 Tiangong 47 PSLV rocket 47 Yuri Gagarin 47 Zhai Zhigang 47 astronaut helper 47 Chandrayaan II 47 suborbital flight 47 manned suborbital 47 Perminov 47 Galileo satellites 46 Cargo Launch Vehicle 46 Martian rovers 46 orbiting observatories 46 agency Roskosmos 46 spaceplane 46 remote sensing satellite Resourcesat 46 MetOp satellite 46 Manned missions 46 Space Exploration 46 Russian Soyuz capsules 46 lunar rovers 46 robotic landers 46 Shenzhou VII mission 46 celestial observations 46 Shenzhou VI craft 46 Soyuz spacecraft 46 Shuttle Endeavour undocks 46 GPS IIR M 46 KSLV 46 Yinghuo 1 46 Shenzhou VII spacecraft 46 Insat 4B 46 Christopher Scolese 46 Shuttle undocks 46 aboard Soyuz spacecraft 46 suborbital 46 Phobos Grunt mission 46 Vinasat 46 DubaiSat 1 46 spaceports 46 suborbital flights 46 SAR Lupe 46 rovers Spirit 46 Space Agency 46 orbit 46 Foton spacecraft 46 don spacesuits 46 Mars 46 orbiter 46 Beidou satellite 46 unmanned lander 46 spacefaring nation 46 SELENE probe 46 Cosmonaut Valery Tokarev 46 spokesman Igor Panarin 46 Sinosat 46 orbiting 46 Shuttle Discovery undocks 45 nanosatellites 45 Shenzhou capsules 45 Centennial Challenges 45 Mars rovers Spirit 45 Gedmark 45 Multi Purpose Crew 45 Orbital Taurus II 45 Gagarin flight 45 Orion spaceship 45 sub orbital 45 Russian Soyuz 45 STSS Demo 45 Yannick d' Escatha 45 venerable Soyuz rocket 45 Michibiki 45 moonship 45 SpaceshipTwo 45 Russian cosmonaut Alexander Kaleri 45 Soyuz craft 45 JIMO 45 Richard Branson Virgin Galactic 45 GOCE satellite 45 Soyuz capsules 45 satellite Kwangmyongsong 2 45 Rosaviakosmos 45 Ariane rocket 45 Mars# 45 Valentina Tereshkova 45 Hu Shixiang deputy 45 GSLV rockets 45 Yuri Shargin 45 Ken Bowersox 45 Eyharts 45 Russian Mikhail Tyurin 45 deorbiting 45 Glonass satellites 45 weather satellite TIROS 45 Globalstar satellites 45 Japanese Aerospace Exploration 45 robotic rover 45 lunar orbiter Chang'e 45 Soyuz rocket 45 unmanned airships 45 shuttle fleet 45 coastal Naro 45 windshield wiper maneuver 45 remote sensing satellite 45 Chang'e 45 BepiColombo mission 45 Resourcesat 2 45 NEOSSat 45 Russian Soyuz spacecraft 45 shuttle Discovery STS 45 malfunctioning firefighting 45 winged spacecraft 45 Skylab 44 twin Mars rovers 44 shuttle orbiter 44 moon 44 Shuttle Endeavour blasts 44 shuttle orbiters 44 spacemen Timothy Kopra 44 Cernan 44 Luan Enjie 44 OSIRIS Rex 44 entered lunar orbit 44 Rockot launch 44 Foton M3 44 Helios 2B 44 orbiting laboratory 44 hypersonic flight 44 Vehicle CEV 44 Xichang 44 Geo IK 44 KazSat 44 Anatoly Perminov 44 Hayabusa spacecraft 44 Nie Haisheng 44 moon Schirra 44 Beidou 44 shuttle Endeavour STS 44 pressurized module 44 INSAT 4CR 44 Shenzhou VI spacecraft 44 INSAT 3D 44 ARCTUS 44 BepiColombo joint 44 ion propulsion 44 Shenzhou manned 44 Crewmate Tracy Caldwell 44 Carl Marchetto 44 vessel VSS Enterprise 44 Visit SPACE.com 44 Yury Malenchenko 44 satellites 44 Space shuttle undocks 44 twin Voyager spacecraft 44 Chandrayan 44 Mars orbiter 44 Shuttle Discovery arrives 44 LEO satellites 44 spacecraft orbiting 44 extravehicular mobility units 44 Galileo constellation 44 rover Sojourner 44 Andrey Borisenko 44 Altair lunar lander 44 Alexander Samokutyayev 44 Soyuz 44 Col. Yang Liwei 44 Cygnus spacecraft 44 Rutan SpaceShipOne 44 Laboratory MSL 44 commander Dmitry Kondratyev 44 taikonaut Yang Liwei 44 Sevastyanov 44 Eutelsat KA SAT 44 Sacred Vessel 44 Salyut 44 spacewalk paves 44 orbital insertion 44 George Zamka 44 Hubble gyroscopes 44 Lori Garver 44 Scolese 44 reusable manned spacecraft 44 based Midcourse Defense 44 exobiology 44 Colonel Yang Liwei 44 Shuttle Endeavour docks 44 Ye Peijian 44 GLONASS satellites 44 Shuttle Atlantis docks 44 Gu Yidong 44 Discovery undocking 44 Earth orbit LEO 44 MUOS satellite 44 Plane OSP 44 stage Naro rocket 44 resupply missions 44 ramjet scramjet 44 unpiloted aircraft 44 Budarin 43 planetary Transits 43 Giove B 43 orbital laboratory 43 Ares IY 43 microgravity experiments 43 Orbital Sciences Corp 43 astrobiological 43 Astro E2 43 rovers 43 Jiaolong 43 Resourcesat 43 Bigelow Aerospace 43 Cape Canaveral Nasa 43 Exploration Vehicle 43 ballistic missile shield 43 extravehicular activities 43 hydrogen fuel 43 Soyuz spaceships 43 SumbandilaSat 43 Edwin Aldrin 43 astronauts Zhai Zhigang 43 Yuri Gagarin blasted 43 Atlantis Undocks From 43 payloads 43 skipper Peggy Whitson 43 Dragon capsule 43 COSTIND 43 spy satellites 43 Nasa spacecraft 43 Cosmodrome 43 MirCorp 43 weaponizing space 43 Glonass K 43 STSS Demonstration 43 antisatellite missile 43 H2A rocket 43 spacewalk 43 shuttle undocks 43 satellites orbiting Earth 43 duration spaceflights 43 spacefaring civilization 43 engineer Garrett Reisman 43 aboard Soyuz rocket 43 Mars rovers 43 Based Infrared 43 Valery Polyakov 43 geosynchronous 43 Martian lander 43 Sergei Gorbunov spokesman 43 EVAs 43 Ed Weiler 43 Launch Vehicle 43 moon Europa 43 spacefaring 43 Heidemarie M. 43 X #B Orbital 43 heavier payloads 43 enters lunar orbit 43 cosmonaut 43 Sputnik satellite 43 meteorological satellites 43 Sergei Korolyov 43 Jim Paulsen SSME 43 catapulted Melroy 43 Reusable Launch Vehicle 43 humanoid robots 43 Shuttle Atlantis arrives 43 preset orbit 43 twin rovers Spirit 43 Laser Interferometer Space 43 Scramjets 43 Dordain 43 Mars Surveyor 43 Jiuquan Satellite Launch 43 Plesetsk 43 Interior Laboratory GRAIL 43 Alexander Samokutyaev 43 geostationary satellites 43 astronaut Eugene Cernan 43 Ares I. 43 cosmonaut corps 43 NuSTAR 43 Ron Grabe Orbital 43 robotic explorer 43 suborbital space 43 Spacewalks 43 WGS satellites 43 SpaceX Falcon 43 geostationary orbits 43 Yuri Koptev 43 Lunar Exploration 43 Lunar Orbiter 43 moon landings 43 LightSail 43 Stratellite 43 Shuttle astronauts 43 Herschel Planck 43 spacemen 43 Chiaki Mukai 43 Operationally Responsive Space 43 Klinkrad 43 ton truss 43 Jiuquan launch 43 LISA Pathfinder 43 Taurus XL 43 Glonass navigation satellites 43 Shenzhou VIII 43 SBSP 43 NASA twin rovers 43 Jules Verne ATV 43 DART spacecraft 42 Shuttle Discovery blasts 42 Tanegashima remote 42 countdown dress rehearsal 42 Alan Thirkettle 42 commercial spaceline 42 GOCE 42 Jing Haipeng 42 scramjet engine 42 Opportunity rovers 42 NASA rover Spirit 42 laboratory Kibo 42 Mars orbiters 42 Italian Roberto Vittori 42 RADARSAT 2 42 heliophysics 42 LCROSS mission 42 Russians Alexander Kaleri 42 Yaogan 42 Mercury Gemini 42 NPO Lavochkin 42 shuttle Endeavor 42 NROL 42 cosmonautics 42 missile defense 42 stabilizing gyroscopes 42 missile interceptor 42 #/#-hour spacewalk [001] 42 astronaut Zhai Zhigang 42 DigitalGlobe WorldView 42 commander Gennady Padalka 42 Minotaur rocket 42 Esrange 42 Manned Mission 42 Orion Crew 42 Spaceguard 42 orbiter lander 42 SpaceX Dragon 42 chief Anatoly Perminov 42 #/#-ton truss 42 Sirangelo 42 lander 42 Soviet cosmonaut Yuri Gagarin 42 Automated Transfer Vehicle 42 predecessor Sean O'Keefe 42 geostationary communications 42 NASA Gamma ray 42 SinoSat 42 Enceladus flybys 42 Lopota 42 spaceships 42 twin Viking landers 42 missile shield 42 dubbed taikonauts 42 lander rover 42 Lunar Prospector 42 Oenaro Island 42 Cartosat 2B 42 CAIB recommendations 42 GLONASS M 42 Cosmonaut Yuri Gagarin 42 Wang Zhaoyao 42 scramjet 42 orbiting ISS 42 Isro 42 Discovery liftoff 42 Soviet cosmonauts 42 NM spaceport 42 wheeled rover 42 Mars Pathfinder lander 42 Manned Spaceflight 42 Soyuz capsule 42 engineer Timothy Kopra 42 SpaceX 42 interplanetary spacecraft 42 Lieutenant Colonel Yang Liwei 42 Cosmonauts Sergei Volkov 42 intercontinental missiles 42 Blackswift 42 COROT satellite 42 Europa Orbiter 42 Soyuz spaceship 42 Progress resupply 42 sputnik 42 RKK Energia 42 Kepler Telescope 42 NASA Kepler 42 Wang Zhaoyao deputy 42 NASA Administrator 42 ISRO 42 liquid propellant 42 Fyodor Yurchikhin 42 GLAST telescope 42 aboard Atlantis 42 JIMO mission 42 Shenzhou V capsule 42 Divine Vessel 42 orbiting Kepler telescope 42 TDRS satellites 42 NASA Kepler spacecraft 42 NASA Authorization 42 orbiting satellites 42 experimental payloads 42 Roskosmos 42 MPCV 42 orbited Earth 42 scramjet engines 42 Apollo astronauts 42 THEMIS mission 42 Jeff Greason 42 Shuttle Docks 42 Kazakhstan Baikonur cosmodrome 42 resident Gregory Chamitoff 42 indigenous cryogenic engine 42 Manned Space 42 Metop 42 Space Station 42 Omid Hope 42 Léopold Eyharts 42 ICBMS 42 Manned 42 interplanetary travel 42 Jules Verne Automated Transfer 42 WISE spacecraft 42 electric ion propulsion 42 NAVSTAR Global Positioning System 42 shuttle Atlantis 42 Alpha Magnetic Spectrometer 42 LightSail 1 42 prototype humanoid robot 42 Discovery undocks 42 Popovkin 42 MErcury Surface Space ENvironment 42 shuttle Discovery undocks 42 agency Roskosmos Anatoly 42 Endeavour docked 42 Hubble Servicing 42 GEochemistry 42 JAXA 42 Mars Reconnaissance Orbiter MRO 42 parachutes malfunctioned 42 ESA GOCE 42 Biomedical Problems 42 INSAT satellite 41 PSLV 41 Miguel Lopez Alegria 41 Mars Pathfinder 41 Interorbital Systems 41 Discovery STS 41 MetOp 41 manned lunar voyage 41 Orion Ares 41 shuttle Endeavour astronauts 41 SCISAT 41 China homemade Feitian 41 Russian Salizhan Sharipov 41 Suborbital 41 Vladimir Popovkin 41 administrator Sean O'Keefe 41 spacesuit 41 missions 41 Ares V 41 polar orbiting 41 Piers Sellers 41 orbital spaceflight 41 ESTRACK 41 Huygens Probe 41 Bulava intercontinental ballistic missile 41 engineer Sandra Magnus 41 Glonass 41 antiballistic missile 41 orbital maneuvers 41 Administrator Sean O'Keefe 41 Shuttle Atlantis undocks 41 lunar spacecraft 41 Cosmic Vision 41 Mars moon Phobos 41 lunar surface 41 Cryosat 41 Mars orbiting spacecraft 41 Alexander Smoleyevsky 41 OSIRIS REx 41 engineer Salizhan Sharipov 41 Mobile User Objective 41 Zhai Zhigang Liu Boming 41 Mars unfeasible 41 Glonass M 41 astronauts Fei Junlong 41 orbiting telescopes 41 Luan Enjie chief 41 Russian Nikolai Budarin 41 SBIRS GEO 41 probe Huygens 41 Akademik Fedorov 41 TacSat 41 Wu Yansheng 41 Pilot George Zamka 41 AIRSS 41 SELENE lunar satellite 41 unmanned Shenzhou 41 GSLV D3 41 Apollo Soyuz 41 Canadian Julie Payette 41 NASA Lunar Reconnaissance 41 So yeon Yi 41 Orbital Sciences Corp. 41 orbiting telescope 41 Ares Orion 41 geo synchronous 41 Mars rover 41 magnetic spectrometer 41 Russian cosmonaut Yuri Usachev 41 flea hop 41 cosmonaut Fyodor Yurchikhin 41 antisatellite 41 supposedly unsinkable Titanic 41 spacecraft Chandrayaan 1 41 orbiting Hubble Space Telescope 41 Hubble Space Telescope HST 41 commander Zhai Zhigang 41 specialists Scott Parazynski 41 orbiters landers 41 Wideband Global 41 Lunar Roving Vehicle 41 commander Fyodor Yurchikhin 41 launching Andrian Nikolayev 41 Spaceguard Survey 41 remote sensing satellites 41 astrobiology 41 director Gene Kranz 41 Omid satellite 41 seven windowed cupola 41 decadal survey 41 satellite Sputnik 41 Garret Reisman 41 Shuttle Discovery docks 41 Simonetta Di Pippo 41 Educator Astronaut 41 Kepler spacecraft 41 Soyuz launcher 41 humanoid robot R2 41 Roman Romanenko 41 angkasawan 41 Jiuquan 41 undocks 41 Astronaut Randolph Bresnik 41 orbit GEO 41 uncontrollable gusher 41 antisatellite weapon 41 orbital 41 geosynchronous communications 41 spaceship 41 shuttle Atlantis docked 41 CX OLEV 41 SpaceShipOne rocket 41 Stratospheric Observatory 41 ARRL AMSAT 41 Express AM# 41 WGS satellite 41 unsustainable trajectory 41 ion thruster 41 shuttle Atlantis STS 41 spacewalking 41 hypersonic jet 41 spacecraft SpaceShipTwo 41 antimissile 41 multistage rocket 41 asteroid deflection 41 cosmonaut Yuri Gagarin 41 Ground Based Midcourse 41 defective gyroscope 41 seater Soyuz spacecraft 41 Dnepr rocket carrying 41 wheeled rovers 41 spaceliner 41 Mercury Redstone 41 Astronaut Sunita Williams 41 H IIA 41 Ballistic missiles 41 Russian cosmonaut Salizhan Sharipov 41 hypersonic scramjet 41 Infrared Astronomy 41 Mark Uhran NASA 41 NASA Lunar Prospector 41 orbiting observatory 41 MESSENGER MErcury Surface 41 Lunokhod 41 Russian cosmonaut Sergei Krikalev 41 spacewalks astronauts 41 Robonaut 2 41 COSMO SkyMed 41 dexterous robots 41 spokesman Kiyotaka Yashiro 41 Vitaly Davydov deputy 41 engineer Koichi Wakata 41 suborbital spaceflights 41 Commander Charlie Hobaugh 41 Japanese astronaut Koichi 41 Antenna LISA 41 humanoid robot bound 41 Viking landers 41 Air Force Evolved Expendable 41 Sputnik 41 Atlantis undocks 41 cosmonaut training 41 pioneered manned spaceflight 41 commander Leroy Chiao 41 GPS IIF 41 Huygens mission 41 EIAST 41 NCADE 41 ISRU 41 suborbital spaceships 41 Japan Kibo laboratory 41 Atlantis STS 41 IceBridge 41 astronaut Peggy Whitson 41 Doohan ashes 41 Yakushin 41 PSLV C7 41 engineer Nicole Stott 41 shuttle Discovery 41 Launch Vehicle Technology 41 Sun synchronous orbit 41 MQ 9s 41 high altitude airship 41 Astronaut Corps 41 Russian cosmonaut Nikolai Budarin 41 COROT 41 retroreflector 41 moonwalkers 41 ISS resupply 41 KODAK CCD Image Sensors 41 engineer Oleg Kononenko 41 Donald Deke Slayton 41 Space ENvironment GEochemistry 41 astronauts Douglas Wheelock 40 phased adaptive 40 lunar excursion 40 deploy missile interceptors 40 David Southwood ESA 40 JIUQUAN China 40 Constellation Ares 40 geo stationary orbit 40 pilot Charlie Hobaugh 40 Space Shuttle Program 40 HEO payload 40 liquid propellants 40 interceptor missiles 40 SpaceLoft XL 40 suborbital rocket 40 Apollo lunar 40 highly elliptical orbits 40 Hubble Space telescope 40 lunar soil 40 ASBM 40 aboard Endeavour 40 anti missile shield 40 ISC Kosmotras 40 Virgin Galactic SpaceShipTwo 40 Pamela Melroy 40 Shuttle astronaut 40 Professor Pillinger 40 GIOVE B 40 interplanetary 40 Biological Problems 40 astronauts Hans Schlegel 40 Oceansat 2 40 orbiter robotic arm 40 HAMSAT 40 NASA Kepler telescope 40 Shuttle Endeavor 40 Mir submersibles 40 Norm Thagard 40 Geosynchronous 40 LEOP 40 Bulava intercontinental missile 40 Soyuz rocket carrying 40 Topol intercontinental ballistic missile 40 satellite Omid Hope 40 Taepo dong 40 NigeriaSat 40 shuttle 40 ISS Expedition 40 Mars Atmosphere 40 Plesetsk space 40 Nik Halik 40 EPOXI mission 40 W. Haise 40 Security GMES 40 Kepler Mission 40 NPOESS 40 space shuttle orbiters 40 Comet Churyumov Gerasimenko 40 Energiya 40 SIRTF 40 hypersonic missile 40 Soviet Union Yuri Gagarin 40 ISS 40 Richard Gilbrech 40 SpaceShip Two 40 Zhang Qingwei 40 hypersonic speeds 40 robotic geologists 40 Soyuz manned spacecraft 40 Japan Koichi Wakata 40 commander Charlie Hobaugh 40 SLC 3E 40 Alphasat 40 Ouyang Ziyuan 40 Orion LAS 40 Bulava missiles 40 Oleg Ivanovsky 40 unmanned payloads 40 Lunar Reconnaissance Orbiter 40 Reliable Replacement Warhead 40 outer space 40 International Linear Collider 40 astronauts Nicole Stott 40 Astronautical Science 40 antiballistic missiles 40 Predator drone flies 40 icebreaker fleet 40 Gamma ray Large 40 Highly Adaptable Satellite 40 Tanegashima Space Center 40 spacecraft Cassini 40 buckypaper virtually 40 twin rover Opportunity 40 spacecraft Shenzhou 40 Space Administration CNSA 40 orbital outpost 40 NLSI 40 CHIPSat 40 Norm Augustine 40 NASA Stratospheric Observatory 40 Plesetsk Cosmodrome 40 Alexei Krasnov 40 Discovery Robonaut 40 Bob Thirsk 40 NAOMS 40 Deep Impact comet 40 Agni III 40 Russian Yuri Lonchakov 40 Operation IceBridge 40 CubeSats 40 Kepler observatory 40 ballistic trajectory 40 PlanetSpace 40 Alexei Leonov 40 Jaxa 40 Topol M missiles 40 Vehicle GSLV 40 Gemini Apollo 40 John Brunschwyler 40 Bulava missile 40 Musudan ri 40 CBERS 40 PSLV C# 40 Sergei Volkov 40 Virgin Galactic unveils 40 Orbiter LRO 40 DSCS satellites 40 6 #/#-hour spacewalk 40 ASTRA 1L 40 Kounotori vehicle 40 Helios 2A 40 shuttle Pamela Melroy 40 sister rover Spirit 40 orbiter docking 40 Kirk Shireman 40 Atlantis astronauts 40 INSAT 4B 40 director Chuck Dovale 40 outer planets 40 Rex Geveden 40 unmanned reconnaissance drones 40 rover Opportunity 40 TDRS K 40 Naoko Yamazaki 40 Soviet cosmonaut Yury Gagarin 40 AEHF 40 vertical takeoff 40 CryoSat mission 40 Terrier Orion 40 cosmonauts aboard 40 PSLV C9 40 INSAT 4C 40 Daniel Sacotte 40 Radarsat 40 Kazakhstan Baikonur 40 Foton M2 40 Ares V. 40 Globalstar constellation 40 rover Curiosity 40 Launch Vehicle GSLV 40 Shuttle docks 40 Angkasawan 40 Boeing B# Dreamliner 40 Kirk Shireman deputy 40 Berinstain 40 Dragon spacecraft 40 deploy interceptor missiles 40 Japanese Kibo laboratory 40 STEREO mission 40 Voyager probes 40 Koichi Wakata 40 Lunar Probe 40 Thirty Meter Telescope 40 Lunar Module Pilot 40 Mission Directorates 40 scientist Konstantin Tsiolkovsky 40 operating mines Guanacevi 40 colonize Mars 40 geosynchronous satellites 40 SBSS Block 40 Muszaphar 40 PSLV C 40 Human Spaceflight 40 GSAT 5P 40 Russian Valeri Polyakov 39 Astrium Satellites 39 GSLV D3 rocket 39 lunar orbits 39 Advanced Extremely 39 JDEM 39 Ron Garan 39 MARSIS