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(Click for frequent words.) 65 unmanned lunar 63 manned missions 62 planetary explorations 62 human spaceflight 62 manned lunar 62 lunar orbiter 61 Sun Laiyan 60 manned spacecraft 60 manned spaceflight 59 lunar missions 59 manned lunar landing 59 manned lunar mission 58 Shenzhou spacecraft 58 Chang'eI 57 Luan Enjie 57 Jupiter Icy Moons Orbiter 56 unmanned rover 56 Crew Exploration 56 planetary exploration 56 Lunar Exploration 56 lunar probe 55 lunar lander 55 lunar landing 55 ExoMars rover 55 interplanetary missions 55 manned lunar missions 55 robotic explorers 55 unmanned lunar orbiter 54 spaceflight 54 Ye Peijian 54 mission Chandrayan 54 lunar probe Chang'e 54 Shenzhou VII 54 NASAs 54 crewed spacecraft 54 Kliper 54 dexterous robot 53 Shenzhou spaceships 53 Lunar Reconnaissance Orbiter LRO 53 NASA 53 lunar 53 NFIRE 53 ExoMars mission 53 Orion spacecraft 53 circumlunar 53 David Southwood ESA 53 manned orbital 53 Chandrayaan II 53 Astrobotic 53 Shenzhou VI 52 lunar rover 52 Chandrayan 52 Ouyang Ziyuan 52 DubaiSat 1 52 ExoMars 52 lunar landings 52 mission Chandrayaan 52 ferrying astronauts 52 Huang Chunping 52 Yinghuo 1 52 crewed missions 52 Cassini Huygens 52 planetary missions 52 unpiloted 52 Jupiter Icy Moons 52 lunar surface 52 BepiColombo 52 Shenzhou V 51 Phobos Grunt 51 unmanned probes 51 lunar landers 51 Space Administration CNSA 51 orbital rendezvous 51 Nasa 51 Zhang Jianqi 51 reusable spacecraft 51 Shenzhou VII mission 51 Chang'e 51 Chandrayaan 51 Qi Faren 51 manned spaceship 51 astronauts Jing Haipeng 51 Shenzhou orbital modules 51 Dordain 51 JIMO 51 Huygens mission 50 lunar rovers 50 Hubble servicing 50 lunar orbiters 50 OSIRIS REx 50 Centennial Challenges 50 probe Chang'e 50 manned Shenzhou 50 spacecraft 50 Foing 50 manned spaceships 50 Apollo missions 50 Shenzhou V spacecraft 50 SpaceX Dragon 50 astrobiology 50 Orbital Space 49 LCROSS mission 49 lunar expeditions 49 International Space Station 49 lunar explorer 49 Daniel Sacotte ESA 49 robotic rovers 49 moon 49 space shuttle 49 manned spaceflights 49 NuSTAR 49 EPOCh 49 lunar orbiter Chang'e 49 spokesman Michael Braukus 49 space module Tiangong 49 suborbital spaceflight 49 JAXA 49 COSTIND 49 robotic spacecraft 49 ion propulsion 49 Yury Gagarin 49 Reusable Launch Vehicle 49 Ares rocket 49 spacecrafts 49 Taikonauts 49 hypersonic flight 48 ramjet scramjet 48 lunar probes 48 SELENE probe 48 astrobiological 48 BepiColombo mission 48 NASA Authorization 48 Mars# 48 Cargo Launch Vehicle 48 Carl Marchetto 48 Decadal Survey 48 asteroid deflection 48 entered lunar orbit 48 Cosmonaut Yuri Gagarin 48 astronauts 48 Mars Pathfinder 48 Shenzhou manned 48 Mercury Gemini 48 Isro 48 Spudis 48 NAVSTAR Global Positioning System 48 manned spacecraft Shenzhou VI 48 experimental payloads 48 VASIMR 48 orbiters 48 GSLV D3 rocket 48 Lunar Reconnaissance Orbiter 48 robotic probes 48 Earth orbit 48 satellite Kwangmyongsong 2 48 ESA Rosetta 48 Ares rockets 48 taikonaut Yang Liwei 48 GPS IIR M 48 Orion capsule 48 Yang Liwei 48 unsustainable trajectory 47 taikonaut 47 ROCSAT 2 47 Space Agency 47 Cosmic Vision 47 Gu Yidong 47 Wu Weiren 47 OSIRIS Rex 47 Orion spaceship 47 Lunar Prospector 47 Orbital Express 47 robotic rover 47 Laboratory MSL 47 Richard Gilbrech 47 KSLV 1 47 Discovery STS 47 unmanned lander 47 uncrewed 47 planetary science 47 manned Soyuz 47 remote sensing satellite 47 NASA rovers 47 manned suborbital 47 Minotaur IV 47 NEOSSat 47 Hayabusa spacecraft 47 Spaceguard 47 orbiter 47 Shenzhou IV 47 Vinasat 47 AIRSS 47 Cryosat 47 weather satellite TIROS 47 remote sensing satellite Resourcesat 47 Sputnik satellite 47 Sensing Satellite LCROSS 47 Orbiter LRO 47 Simonetta Di Pipo 47 BepiColombo joint 47 William Readdy NASA 47 NASA LCROSS 47 Vostok spacecraft 47 orbiting observatories 47 exobiology 47 STSS Demonstration 47 Perminov 47 Simonetta Di Pippo ESA 46 spacefaring 46 Mars rover 46 Space Exploration 46 IPY 46 Deep Impact mission 46 Space Shuttle 46 astronaut Yang Liwei 46 Constellation Ares 46 Shenzhou 46 journal Meteoritics 46 orbital insertion 46 Altair lunar lander 46 deorbiting 46 Yannick d' Escatha 46 Lunar Orbiter 46 INSAT 3D 46 Mars 46 remote sensing 46 MetOp satellite 46 Kirk Shireman 46 LADEE 46 skipper Peggy Whitson 46 Manned missions 46 Mars Surveyor 46 scientist Greg Delory 46 NASA Centennial Challenges 46 Cape Canaveral Nasa 46 GSLV D3 46 outer space 46 Kepler Mission 46 SpaceX Falcon 9 46 Sirangelo 46 NASA Lunar Crater 46 Luan Enjie chief 46 STSS Demo 46 Ares Orion 46 Lt. Col. Yang Liwei 46 Martian rover 46 celestial observations 46 Shana Dale 46 SCISAT 46 Xie Mingbao 46 William Readdy 46 taikonauts 46 Lunar X PRIZE 46 COSMO SkyMed 46 ISRO 46 NROL 46 Lori Garver 46 shuttle Endeavour STS 46 suborbital 46 CBERS 2B 45 spaceflyers 45 LISA Pathfinder 45 Sun Jiadong 45 EIAST 45 Astro E2 45 Visit SPACE.com 45 Zhang Qingwei 45 Preston Burch 45 Oceansat 2 45 rover Curiosity 45 Space Shuttle Program 45 Ares IY 45 Yaogan 45 Shenzhou capsule 45 space shuttles 45 Simonetta Di Pippo 45 sub orbital 45 Orion Crew 45 Colonel Yang Liwei 45 heliophysics 45 enters lunar orbit 45 RADARSAT 2 45 buckypaper virtually 45 Terrestrial Planet Finder 45 Laurie Leshin 45 lunar outpost 45 Yuri Koptev 45 Security GMES 45 Jaxa 45 scramjets 45 Satellite Launch Vehicle 45 Russian cosmonaut Yuri Gagarin 45 Apollo lunar 45 ESA Planck 45 orbiters landers 45 JIMO mission 45 Anatoly Perminov 45 simulated lunar 45 decadal survey 45 EPOXI mission 45 Junichiro Kawaguchi 45 Sevastyanov 45 Sacred Vessel 45 LRO 45 CHIPSat 45 Earth orbit LEO 45 Ouyang Ziyuan chief 45 Cygnus spacecraft 45 Crew Launch Vehicle 45 astronauts Fei Junlong 45 NASA MESSENGER 45 KSLV 45 Braukus 45 windshield wiper maneuver 45 Roskosmos 45 probe Huygens 45 Solar TErrestrial RElations Observatory 45 STEREO mission 45 NGATS 45 Agni V 45 SELENE 45 Cosmology concludes 45 Flyby spacecraft 45 Mars Pathfinder lander 45 colonize Mars 45 Astrosat 45 interplanetary probes 45 Wu Yansheng 45 Lopota 45 Daniel Sacotte 45 Shuttle undocks 45 extravehicular activities 45 Jean Pierre Lebreton 45 based Midcourse Defense 45 Orion CEV 45 aboard Skylab 45 Shenzhou VIII 45 Manned Spaceflight 45 Tiangong 45 unmanned spacecraft 45 robotic landers 45 lunar regolith 45 SMOS Soil Moisture 45 Phobos Grunt mission 44 Red Planet 44 spacecraft SpaceShipTwo 44 NASA Lunar Prospector 44 Air Force Evolved Expendable 44 Mars rovers Spirit 44 Wideband Global 44 satellite Sputnik 44 Hubble Space Telescope HST 44 Deep Impact comet 44 Rosetta spacecraft 44 remote sensing satellites 44 Zhai Zhigang 44 Tang Xianming director 44 Foton M3 44 Lunar Probe 44 Russian Soyuz 44 Suborbital 44 Apollo Skylab 44 spacewoman 44 Operationally Responsive Space 44 Rosaviakosmos 44 Martian rovers 44 spacecraft orbiting 44 Clementine spacecraft 44 Laser Interferometer Space 44 Saturnian moon Titan 44 Shuttle Discovery undocks 44 Climate Experiment GRACE 44 Soviet cosmonaut Yury Gagarin 44 Christopher Scolese 44 astronauts Zhai Zhigang 44 Spaceguard Survey 44 Mars Reconnaissance Orbiter MRO 44 Shenzhou VII spacecraft 44 commander Dmitry Kondratyev 44 operationally responsive space 44 malfunctioning firefighting 44 winged spacecraft 44 SBSP 44 Lunar CRater Observation 44 SpaceX Dragon capsule 44 specialists Scott Parazynski 44 Orbiter spacecraft 44 ADM Aeolus 44 orbiting 44 Research Organisation Isro 44 Nikolai Moiseyev 44 Beidou 44 prototype humanoid robot 44 Curiosity rover 44 weaponisation 44 Satish Dhawan 44 Exploration Vehicle 44 indigenous cryogenic 44 NASA Kepler 44 antisatellite 44 NSPO 44 NM spaceport 44 Kepler spacecraft 44 Jing Haipeng 44 Situ Resource 44 GOCE satellite 44 SpaceshipTwo 44 meteorological satellites 44 Nasa Deep Impact 44 agency Roscosmos 44 spacefaring nation 44 Fei Junlong 44 Interior Laboratory GRAIL 44 Wang Zhaoyao deputy 44 astronaut Rusty Schweickart 44 spaceplane 44 GLAST telescope 44 NASA Cosmic Background 44 scramjet engines 44 SMOS 44 satellites orbiting Earth 44 Centre VSSC 44 robotic explorer 44 manned spacecraft Shenzhou 44 Orbital Taurus II 44 DigitalGlobe WorldView 44 Earth Observation 44 Minotaur rocket 44 hypersonic propulsion 44 Interorbital Systems 44 agency Roskosmos 44 spokesman Igor Panarin 44 moon bahn kee 44 geosynchronous satellite launch 44 Burt Rutan SpaceShipOne 44 Virgin Galactic unveils 44 Planetary Society 44 ESA SMART 44 rover Opportunity 44 Atlantis STS 44 Jim Paulsen SSME 44 JDEM 44 Lee Joo jin 44 Li Jinai 44 Mars rovers 44 propulsion subsystem 44 Multi Purpose Crew 44 planetary Transits 43 suborbital spacecraft 43 orbiting spacecraft 43 LightSail 43 INSAT satellite 43 CBERS 43 twin Voyager spacecraft 43 GSLV 43 Global Precipitation Measurement 43 linear collider 43 director Chuck Dovale 43 orbit GEO 43 Douglas Hudgins Kepler 43 Stardust spacecraft 43 orbiter lander 43 Beidou satellite 43 CryoSat mission 43 astronaut 43 suborbital flights 43 Orion LAS 43 indigenous cryogenic stage 43 exo planet 43 circumlunar satellite 43 reusable suborbital 43 Mars Climate Sounder 43 Nasa Kepler 43 NPOESS 43 Volker Liebig 43 orbited Earth 43 Ed Weiler 43 Europa Orbiter 43 spacefaring nations 43 Koptev 43 Rex Geveden 43 satellite ASAT 43 NASA THEMIS 43 Human Spaceflight 43 Jiaolong 43 Cathy Peddie LRO 43 Blackswift 43 Mars orbiting spacecraft 43 NPO Lavochkin 43 ESA GOCE 43 NASA Administrator 43 Project Ozma 43 FORMOSAT 43 GMES 43 Rockot launch 43 G Madhavan Nair 43 Nie Haisheng 43 Joel Sitz 43 Bernard Foing 43 moonbase 43 Vehicle CEV 43 Planck telescope 43 countdown dress rehearsal 43 Infrared Astronomy 43 Origins Spectral Interpretation 43 Shenzhou VII manned 43 PSLV rocket 43 Human Microbiome Project 43 Heliophysics 43 X #B Orbital 43 Endeavour docked 43 Oleg Ivanovsky 43 Cassini Huygens Mission 43 asteroid Itokawa 43 Orion Ares 43 Admiral Wu Shengli 43 comet chaser 43 Soyuz TMA spacecraft 43 ARCTUS 43 Cosmic Background Explorer 43 Gagarin flight 43 hypersonic 43 Yury Malenchenko 43 shuttle Endeavor 43 Evolved Expendable Launch Vehicle 43 MAVEN 43 Hu Shixiang deputy 43 flea hop 43 GSLV Mk III 43 YES2 43 extrasolar planet observations 43 Omid satellite 43 astronaut Eugene Cernan 43 Foton M2 43 orbiting observatory 43 GSLV rocket 43 Satellite Launch Vehicle GSLV 43 Chiaki Mukai 43 sub orbital spaceflight 43 Phobos Explorer 43 PlanetSpace 43 synthetic genomics 43 Hubble telescope 43 Ron Grabe Orbital 43 spacefarers 43 manager Mike Suffredini 43 prebiotic molecules 43 Manned Mission 43 DART spacecraft 43 KazSat 43 G. Madhavan Nair 43 Hubble Servicing 43 LRO LCROSS 43 Kepler Space Telescope 43 Ron Dittemore 43 NASA Stratospheric Observatory 43 Bob Ess 43 Giove B 43 Philae lander 43 Proba 2 43 Mars landers 43 H IIB 43 Rover MER 43 Based Infrared 43 moon Europa 43 NASA Kepler spacecraft 43 coastal Naro 43 Shenzhou VI spacecraft 43 comets asteroids 43 Planck satellite 43 Operations Bill Gerstenmaier 43 catapulted Melroy 43 Eagle lunar lander 43 shuttle Discovery STS 43 Gamma ray Large 43 Apollo astronauts 43 Japan Kibo laboratory 43 MirCorp 43 weaponizing space 43 wife commissioned Celestis 43 Ares I. 43 cryogenic engines 43 Soviet cosmonaut Yuri Gagarin 42 Jon Karkow 42 spacecraft orbited 42 Ed Weiler NASA 42 X Prize 42 Mars lander 42 Shuttle Endeavour undocks 42 manned lunar voyage 42 Megha Tropiques 42 scientist Anthony Colaprete 42 Human Spaceflight Microgravity 42 CAIB recommendations 42 spacefaring civilization 42 rovers 42 Mars Atmosphere 42 interplanetary 42 Wang Yongzhi 42 E'Prime 42 Comet Churyumov Gerasimenko 42 suborbital spaceships 42 Shuttle Endeavour docks 42 Ares V 42 Taikonaut 42 rover Spirit 42 Klinkrad 42 Jules Verne ATV 42 shuttle undocks 42 Roscosmos 42 China Manned Space 42 THEMIS mission 42 Paul Spudis 42 Boris Chertok 42 Antenna LISA 42 spaceships 42 cosmonautics 42 Salyut 42 Wang Zhaoyao 42 Rosetta comet chaser 42 Soyuz rockets 42 commander Zhai Zhigang 42 DSCS satellites 42 unmanned 42 Agency Jaxa 42 PSLV C9 42 Lunar Module Pilot 42 Mars orbiter 42 Foton spacecraft 42 Sinosat 42 shuttle Discovery undocks 42 Planetary Science Division 42 duration spaceflights 42 journal Acta Astronautica 42 HyFly 42 astronautical 42 IYA# 42 NASA STEREO 42 Lieutenant Colonel Yang Liwei 42 Sergei Korolyov 42 Astronauts aboard 42 Launch Vehicle 42 Helios 2B 42 Mark Uhran NASA 42 Deep Impact probe 42 Mars Exploration 42 Resourcesat 2 42 astronomical observatories 42 WGS satellite 42 origami masters 42 ray Space Telescope 42 Earth orbiting satellites 42 MARSIS 42 aboard Soyuz spacecraft 42 Virgin Galactic SpaceShipTwo 42 WGS satellites 42 orbital outpost 42 cosmonaut Yuri Gagarin 42 Angkasawan 42 Jean Luc Margot 42 HIAPER 42 Canadarms 42 GeneSat 1 42 lunar equator 42 hypersonic missiles 42 X PRIZE 42 DragonLab 42 twin rovers Spirit 42 manager Gerhard Schwehm 42 NASA Wallops 42 Martian arctic 42 NASA Headquarters 42 Viking landers 42 Wernher von Braun 42 lander 42 spokesman Kiyotaka Yashiro 42 STP S# 42 John Brunschwyler 42 Cassini Equinox 42 interplanetary spacecraft 42 Kirk Shireman NASA 42 Jeff Greason 42 Recovery Experiment SRE 42 suborbital rocket 42 PSLV C# 42 rocketry 42 GSLV F# 42 FreedomCAR 42 Galileo satellites 42 Glonass K 42 Atlantis undocks 42 H2A rocket 42 Viking Orbiter 42 GLAST 42 Rusty Schweickart 42 Yuri Gagarin 42 indigenous cryogenic engine 42 Vitaly Davydov deputy 42 NLSI 42 NASA Astrobiology 42 NASA twin STEREO 42 LightSail 1 42 Colin Pillinger 42 Skylab 42 Norm Thagard 42 Shin yong 42 Mars Opportunity rover 42 Taurus XL 42 TacSat 42 mineralogical mapping 42 manager Alan Thirkettle 42 Churyumov Gerasimenko 42 Nasa Ames 42 spaceward 42 Aboard Endeavour 42 martian 42 Lunar Rover 42 JTAC declared 42 Manned Space Mission 42 Ranging spacecraft 42 SpaceX Falcon 42 Scolese 42 MARSIS radar 42 Soyuz rocket 42 satellites 42 AFOSR 42 satellite shootdown 42 #P/Churyumov-Gerasimenko 42 commander Sergei Volkov 42 SIRTF 42 SELENE lunar satellite 42 twin Mars rovers 42 extravehicular activity EVA 42 VASIMR engine 42 spacemen Timothy Kopra 42 comets meteors 42 Apollo Soyuz 42 NASA Lunar Reconnaissance 42 spacecraft Hayabusa 42 spacecraft Chandrayaan 42 SIM PlanetQuest 42 NASRDA 42 suborbital reusable launch 42 Earth Observation EO 42 polar orbiting 42 lunar spacecraft 42 interstellar dust samples 42 GPS 2R 42 Derek Hassmann 42 spaceborne 42 NSSTC 42 Kavandi 42 laser altimeter 42 Lunar Lander Challenge 42 chairman K. Radhakrishnan 42 COSPAR 42 rovers Spirit 42 LUNAR 42 ICESat 42 Hayabusa probe 42 Mylswamy Annadurai 42 Discovery liftoff 42 GPS IIF 41 Space shuttle undocks 41 Shuttle Discovery blasts 41 Alan Thirkettle 41 nanosatellites 41 Kulcinski 41 Unmanned Combat Air 41 Eutelsat KA SAT 41 geo stationary orbit 41 W. Haise 41 Space Telescope GLAST 41 Winglee 41 Agency JAXA 41 Block IIF 41 terraforming Mars 41 SumbandilaSat 41 Stardust NExT 41 NASA Space Shuttle 41 supersonic cruise missile 41 Mars rover Curiosity 41 orbital spaceflight 41 Fuk Li Mars 41 Relations Observatory STEREO 41 Keiji Tachikawa 41 lunar explorers 41 Bigelow Aerospace 41 Xichang 41 Moon Mineralogy Mapper 41 Sergei Korolev 41 spaceflights 41 Ariane launcher 41 inter planetary 41 Atlantis Undocks From 41 BRAHMOS 41 Russian cosmonaut Salizhan Sharipov 41 Qian Xuesen 41 DubaiSat 41 Impact Probe MIP 41 Express AM# 41 geo synchronous 41 Infrared Pathfinder Satellite 41 NASA WMAP 41 comet Churyumov Gerasimenko 41 Valery Polyakov 41 Mirelson 41 PSLV C6 41 Wolszczan 41 Jennifer Trosper mission 41 Budarin 41 airborne observatory 41 Martian lander 41 astronaut helper 41 microgravity experiments 41 lunar soil 41 Yuri Shargin 41 Atlas 2AS 41 angkasawan 41 HEO payload 41 Cernan 41 Hyper X 41 National Aeronautics 41 Observatory STEREO 41 orbiting telescope 41 Earth Observations 41 Galileo satellite 41 exoplanetary 41 KA SAT 41 Mars moon Phobos 41 spaceship 41 Stratospheric Observatory 41 Robotic Lunar Exploration 41 Shuttle Endeavour blasts 41 unmanned Shenzhou 41 Jean Jacques Dordain 41 Exploration Vehicle CEV 41 Soyuz spaceship 41 habitable worlds 41 Grammier 41 Huygens Probe 41 Pan STARRS 41 Charles Elachi 41 engineer Timothy Kopra 41 Mike Leinbach shuttle 41 spy satellites 41 Outer Space Treaty 41 orbiting Mars 41 Kirk Shireman deputy 41 reusable manned spacecraft 41 geosynchronous 41 waxing gibbous 41 Hinode 41 Astronauts inspect 41 satellite constellation Iridium 41 cryogenic engine 41 spaceliner 41 Soviet Union Yuri Gagarin 41 Alphabus 41 astrophysical phenomena 41 Dyna Soar 41 GOCE 41 Plane OSP 41 ESA Earth Observation 41 ESA Integral 41 Hubble 41 moon landings 41 Systems Mission Directorate 41 Convection Rotation 41 J 2X engine 41 laboratory Skylab 41 Saturn moon 41 Astronautics 41 CARTOSAT 41 Robotic Exploration 41 Comet #P/Churyumov-Gerasimenko 41 Shuttle Discovery docks 41 spacemen 41 aeronautics 41 Holly Ridings 41 Jiuquan 41 Sample Return 41 Space Fence 41 spacecraft Chandrayaan 1 41 Discovery undocks 41 Organization ISRO 41 Yakushin 41 waitress Ingrid Sufan 41 Starchaser 41 Hubble Space Telescope 41 SPACEHAB 41 Airborne Laser Testbed 41 scientist Ouyang Ziyuan 41 P Churyumov Gerasimenko 41 Soyuz booster 41 scramjet engine 41 Solar Orbiter 41 shuttle Discovery undocked 41 PSLV C8 41 astrobiologists 41 stabilizing gyroscopes 41 UCAV 41 www.xprize.org 41 Kibo module 41 Schragger adds 41 NAOMS 41 Ken Bowersox 41 builder Bigelow Aerospace 41 Space Flight 41 Helios 2A 41 Geo synchronous 41 GPS IIIA satellites 41 Peter Theisinger 41 Endeavour STS 41 Arik Posner 41 UA Lunar 41 EELV 41 Metop 41 PSLV C7 41 lander rover 41 ESMD 41 SAR Lupe 41 Square Kilometre Array SKA 41 Ariane rocket 41 reusable hypersonic 41 SpaceShip One 41 Lunar Roving Vehicle 41 Polar Epsilon 41 Orion MPCV 41 MetOp 41 Jill Tarter 41 Mars unfeasible 41 shuttle Atlantis STS 41 Dream Chaser 41 malfunctioning rotary joint 41 Launch Abort System 41 Bruce Jakosky 41 Vikram Sarabhai Space 41 ASAT weapon 41 spacecraft Cassini 41 Administrator Lori Garver 41 SBIRS 41 ATV Jules Verne 41 astronaut Zhai Zhigang 41 X #A 41 lunar module Eagle 41 TSAT 41 Shuttle Discovery arrives 41 Orbiting Carbon Observatory OCO 41 Martian soil 41 chairman G Madhavan 40 preset orbit 40 Soyuz manned spacecraft 40 Russians Alexander Kaleri 40 CCDev 40 Divine Vessel 40 Deep Impact Extended 40 unpiloted aircraft 40 Michibiki 40 MErcury Surface Space ENvironment 40 missile defense 40 INSAT 4CR 40 shuttle orbiters 40 Lunar Lander 40 Mars Odyssey spacecraft 40 Astronautical Science 40 Mars Rover 40 GeneSat 40 planetary 40 Foton M3 mission 40 Lunokhod 40 Clervoy 40 Jupiter icy moons 40 X #B 40 Transformational Satellite Communications 40 Space Launch Vehicle 40 Iridium NEXT 40 Kazakhstan Baikonur cosmodrome 40 Konstantin Tsiolkovsky 40 robot rovers 40 robotic lander 40 visit http:/saturn.jpl.nasa.gov 40 Opportunity rover 40 Beidou navigation 40 Fengyun 40 ISRU 40 NewSpace 40 Japanese Aerospace Exploration 40 Alexander Samokutyayev 40 J 2X 40 Predator drone flies 40 astronauts Nicole Stott 40 NASA Robonaut 40 Emily Lakdawalla 40 Kepler 9c 40 Craig Steidle 40 Mark N. Sirangelo 40 LCROSS 40 Rocketplane Ltd.