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(Click for frequent words.) 62 Apollo missions 57 Skylab 56 Apollo Skylab 56 lunar landing 56 Walter Schirra 54 Lunar Module 54 manned lunar landing 54 Mercury Gemini 54 Curiosity rover 54 SpaceShip One 53 Mars Pathfinder 53 Foton M2 53 Foton M3 52 Mars Surveyor 52 Edwin Aldrin 52 Mir Space Station 52 Sojourner rover 52 Lunar Rover 51 lunar module pilot 51 Apollo Soyuz 51 ESA Huygens probe 51 asteroid Itokawa 51 Donald Deke Slayton 51 Itokawa asteroid 51 Discovery STS 51 unmanned rover 51 Mars Pathfinder lander 51 aboard Skylab 51 Gus Grissom 51 Mars rovers Spirit 51 Viking landers 51 Shenzhou spacecraft 51 Stardust spacecraft 50 SpaceX Dragon 50 Lunar Module Pilot 50 Lunar Reconnaissance Orbiter LRO 50 moonwalkers 50 ocean splashdowns 50 Huygens Probe 50 NASA Cosmic Background 50 rover Sojourner 50 lunar rover 50 BepiColombo 49 Apollo astronauts 49 lunar surface 49 Lunar Excursion Module 49 celestial observations 49 COBE satellite 49 Huygens probe 49 lunar landings 49 Infrared Astronomy SOFIA 49 Zhai Zhigang Liu Boming 49 astronaut Fred Haise 49 Otto Lilienthal 49 space shuttle 49 extravehicular 49 Russian cosmonaut Yuri Gagarin 49 Cosmic Background Explorer 49 asteroid Eros 49 lunar rovers 49 orbited Earth 49 NASA Lunar Prospector 49 Konrad Dannenberg 49 Lunar Orbiter 49 Yury Gagarin 49 Cosmonaut Yuri Gagarin 49 Sojourner Rover 48 manned lunar 48 aboard Atlantis 48 Sergei Korolev 48 LightSail 1 48 Pilot George Zamka 48 cosmonaut Yuri Gagarin 48 Owen Garriott 48 Atlas IIAS 48 Orion spacecraft 48 Mars landers 48 Gene Cernan 48 GeneSat 1 48 manned lunar missions 48 Norm Thagard 48 orbiter lander 48 Earth asteroid Itokawa 48 lunar missions 48 reentry capsule 48 spacecraft 48 robotic rovers 48 Lunar Roving Vehicle 48 Space Shuttle 48 Japan Hayabusa spacecraft 48 NuSTAR 48 Reusable Launch Vehicle 48 Lunar Prospector 48 extravehicular activities 48 Apollo 48 NASA Stratospheric Observatory 48 Virgin Galactic SpaceShipTwo 48 Orbital Express 48 Cassini Huygens 48 unmanned probes 48 Phobos Grunt 48 comet Churyumov Gerasimenko 48 robotic explorer 47 Lunar Surface 47 engineer Nicole Stott 47 astronaut Owen Garriott 47 Silver Dart 47 Shenzhou IV 47 Space Capsule 47 Erik Lindbergh 47 Space Shuttle STS 47 lunar module 47 Kliper 47 orbiter 47 Cassini Huygens Mission 47 lunar landers 47 Story Musgrave 47 Hayabusa spacecraft 47 Spaceguard 47 Saturn V 47 comet chaser 47 Jack Swigert 47 Kepler Mission 47 Satish Dhawan 47 lunar module Eagle 47 spacecraft SpaceShipTwo 47 aboard Soyuz TMA 47 OCO satellite 47 unmanned lunar 47 Cygnus spacecraft 47 Nasa spacecraft 47 Spacelab 47 Hubble Servicing 47 shuttle Endeavor 47 dexterous robot 47 collectSPACE.com 47 NASA LCROSS 47 Japan Kibo laboratory 47 Vikram Sarabhai 47 circumlunar 47 lunar equator 47 duration spaceflights 47 Soviet cosmonaut Yury Gagarin 47 Shenzhou spaceships 47 ESA ERS 46 NASA Stardust spacecraft 46 Judy Resnik 46 Chandrayan 46 SpaceLoft XL rocket 46 lunar regolith 46 Foton M3 mission 46 Apollo lunar landings 46 station Skylab 46 LOCAD PTS 46 orbital rendezvous 46 Mercury Redstone 46 Atlas 2AS 46 collectSPACE 46 Fred Haise 46 Virgin Galactic unveils 46 Nasa Jet Propulsion 46 Shenzhou VI spacecraft 46 aquanaut 46 ESA GOCE 46 Opportunity rovers 46 unmanned spacecraft 46 Exploration Vehicle 46 Nasa Mars Reconnaissance 46 spacecraft orbited 46 NASAs 46 lunar lander 46 Lunokhod 46 NASA Voyager spacecraft 46 wife commissioned Celestis 46 Shenzhou VII mission 46 LCROSS mission 46 O. Hobaugh 46 Buzz Aldrin Apollo 46 Mars Polar Lander 46 orbiting observatories 46 Planck spacecraft 46 robotic landers 46 NASA 46 Saturn Cassini 46 unmanned lunar orbiter 46 Jing Haipeng 46 Gemini VII 46 STSS Demo 46 lander 46 Satellite Launch Vehicle 46 lunar expeditions 46 GSLV D3 46 Kepler observatory 46 lander rover 46 manned Shenzhou 46 Jupiter Icy Moons Orbiter 46 Stardust capsule 46 ExoMars rover 46 Daniel Sacotte 46 Viking Lander 46 suborbital spaceships 46 Voyager Galileo 46 rover Opportunity 46 Orbiter LRO 46 Chandrayaan II 46 Hubble Space 46 director Gene Kranz 46 Kaguya 46 SB2C Helldiver crashed 46 KAGUYA 46 Voyager spacecraft 46 Taurus XL 46 Scaled Composites SpaceShipOne 46 spaceward 45 Mars Climate Orbiter 45 Altair lunar lander 45 retroreflector 45 Ellison Onizuka 45 MirCorp 45 SpaceShipTwo SS2 45 Apollo Lunar Module 45 rover Curiosity 45 astronauts Zhai Zhigang 45 Hayabusa probe 45 Astrobotic 45 manned lunar landings 45 Nasa 45 NEAR Shoemaker 45 Philae lander 45 spaceplane 45 Orion Crew 45 Diviner instrument 45 Ares IX 45 postflight 45 Chang'eI 45 Martian lander 45 Rick Linnehan 45 astronauts 45 Dottie Metcalf Lindenburger 45 manned spacecraft Shenzhou VI 45 Cosmic Vision 45 Frank Borman 45 spaceship 45 Atlantis STS 45 Gerard Kuiper 45 Huygens mission 45 Nasa astronaut 45 shuttle Discovery STS 45 Daniel Sacotte ESA 45 Spacewalker 45 Mars Lander 45 George Zamka 45 lunar 45 unmanned Shenzhou 45 lunar exploration 45 geosynchronous satellite launch 45 Mars# 45 Wally Schirra 45 USS Grunion 45 nanosatellite 45 Russian Mikhail Tyurin 45 lunar meteorite 45 Benthic Rover 45 Martian rovers 45 Gravity Probe 45 DISR 45 Martian rover 45 orbital insertion 45 astronaut Eugene Cernan 45 Chiaki Mukai 45 lunar orbiter 45 Convection Rotation 45 twin rover Opportunity 45 moonwalker 45 parachutes malfunctioned 45 International Space Station 45 Vostok spacecraft 45 astronaut 45 Shuttle Endeavour undocks 45 MARSIS radar 45 Manned Spacecraft Center 45 Jules Verne ATV 45 Pamela Melroy 45 STS #L 45 OSIRIS REx 45 Konstantin Feoktistov 45 shuttle aft compartment 45 entered lunar orbit 45 Comet Halley 45 Charles Simonyi Hungarian 45 ST5 45 PSLV C 45 simulated weightlessness 45 Doohan ashes 45 JIMO 45 Endeavour STS 45 Lunar Lander 45 Giovanni Cassini 45 Nasa Mars Odyssey 45 Titan IVB 45 APXS 45 Northrop Grumman Weightless Flights 45 Virgil Gus Grissom 45 shuttle Endeavour STS 45 moon 45 Mars rovers 45 Theodore von Karman 45 DubaiSat 1 45 Cryosat 45 NASA THEMIS 45 Dominic Gorie 45 Hideo Itokawa 45 Astro E2 45 GSLV rockets 45 NASA twin rovers 44 Aboard Atlantis 44 UTTR 44 Hubble Telescope 44 Star Trek creator 44 pilot Charlie Hobaugh 44 ESA Huygens 44 microgravity experiments 44 Gemini Apollo 44 Phoenix Microscopy Electrochemistry 44 Mini SAR 44 Commander Charlie Hobaugh 44 Oleg Ivanovsky 44 Hubble Space Telescope 44 ESA Herschel 44 cosmonaut Valery Tokarev 44 planetary exploration 44 Squyres Cornell 44 Satellite Launch Vehicle GSLV 44 rocket scientist Wernher 44 Lockheed Skunk Works 44 Terry Virts 44 comet flyby 44 aboard Taurus XL 44 Barry Butch Wilmore 44 crewed spacecraft 44 Soviet cosmonauts 44 Andrey Borisenko 44 VMS Eve 44 spacecrafts 44 skipper Peggy Whitson 44 SpaceLoft XL 44 laboratory Skylab 44 Astronaut Scholarship 44 Annette Tombaugh Sitze 44 reusable spacecraft 44 Shenzhou VI craft 44 Lunar Exploration 44 Commander Rick Sturckow 44 #/#-hour spacewalk [001] 44 Soviet cosmonaut Yuri Gagarin 44 Alexander Samokutyayev 44 Rosetta spacecraft 44 Landsat satellites 44 GSLV rocket 44 commander Leroy Chiao 44 Meridiani plains 44 Satcher Jr. 44 Spacewalkers Scott Parazynski 44 weather satellite TIROS 44 Infrared Astronomical Satellite 44 Rosetta lander 44 NASA Educator Astronaut 44 ExoMars mission 44 Foton spacecraft 44 simulate weightlessness 44 simulated Martian 44 Dragon capsule 44 GLAST spacecraft 44 ESA ASI 44 Ann Druyan 44 Polar Lander 44 NM spaceport 44 NEOWISE 44 Jupiter flyby 44 mere fly bys 44 Qi Faren 44 Stardust NExT 44 MISSE 44 specialist Kalpana Chawla 44 INSAT 4CR 44 Martian terrain 44 Shuttle astronauts 44 lunar orbiters 44 Lucy Hawking 44 Bruce Banerdt 44 aboard Vostok 44 Mars Reconnaissance Orbiter MRO 44 BepiColombo mission 44 ferrying astronauts 44 Webb Telescope 44 PSLV rocket 44 Itokawa 44 Shenzhou V 44 W. Haise 44 geo synchronous 44 Horizons spacecraft 44 LADEE 44 astronomer Edwin 44 Mars Opportunity rover 44 Jupiter Icy Moons 44 Globalstar satellites 44 Galaxy Evolution 44 ICESat 44 Auguste Piccard 44 Russian cosmonaut Yuri Usachev 44 suborbital spacecraft 44 simulated lunar 44 Kavandi 44 Nasa Deep Impact 44 Geeky tweeters 44 Wernher von Braun 44 copper fortified impactor 43 suborbital 43 windshield wiper maneuver 43 Piers Sellers 43 lunar module descent 43 Yuri Gagarin 43 Pam Melroy 43 Gravity Probe B 43 ESA Rosetta 43 Desert RATS 43 Galileo spacecraft 43 Dragon spacecraft 43 Planck observatory 43 Aboard Endeavour 43 WK2 43 manned orbital 43 Titan flybys 43 Jerrie Cobb 43 WhiteKnightTwo mothership 43 Hayabusa capsule 43 cosmonaut Sergei Krikalev 43 coastal Naro 43 astronaut Scott Parazynski 43 Canadarms 43 Shenzhou manned 43 enters lunar orbit 43 Terrier Orion 43 Spacesuits 43 M. Schirra 43 unpowered glide 43 astronautical 43 SpaceshipTwo 43 GeneSat 43 Jet Propulsion Lab 43 crawler transporter 43 Donn Eisele 43 airborne observatory 43 Commander Pam Melroy 43 LRO spacecraft 43 stratospheric balloon 43 piggybacked Huygens probe 43 Haise 43 Guion Bluford 43 interplanetary missions 43 Enceladus flybys 43 Shannon Lucid 43 Ernst Stuhlinger 43 Manned Spaceflight 43 AMASE 43 Abigail Mae 43 NPO Lavochkin 43 Tycho Brahe 43 New Horizons spacecraft 43 Shuttle astronaut 43 Ellery Hale 43 Mars rover 43 Commander Sergei Krikalev 43 cucumber sugar beet 43 NASA Cassini 43 Stephanie Stilson NASA 43 spokesman Michael Braukus 43 shuttle Atlantis astronauts 43 Aerojet propulsion 43 Astrosat 43 YES2 43 drogue parachute 43 xenon propellant 43 spacecraft Chandrayaan 1 43 Von Braun 43 Junichiro Kawaguchi 43 Yury Lonchakov 43 outer planets 43 Hubble Space Telescope HST 43 Hubble Space telescope 43 Konstantin Tsiolkovsky 43 SELENE 43 unstowed 43 Hale Bopp 43 Rosetta orbiter 43 mission Chandrayaan 43 lunar soil 43 EPOCh 43 Centaur rocket 43 cosmonaut Sergei Avdeyev 43 Mars Orbiter 43 NASA rovers 43 spaceflight 43 Shallow Subsurface Radar 43 WISE telescope 43 SpaceShipOne rocket 43 Werner Von Braun 43 spacecraft Hayabusa 43 orbiting spacecraft 43 onboard Chandrayaan 43 Giacconi 43 Chandrayaan 43 NASA EPOXI mission 43 Epsilon Eridani 43 Lander robotic arm 43 twin Viking landers 43 Rockot launch 43 Commander Sergei Volkov 43 Takao Doi 43 SELENE probe 43 Cassini Huygens spacecraft 43 flyby spacecraft 43 Voyager probes 43 Mars Rover 43 shuttle orbiter 43 UA Lunar 43 Ron Dittemore shuttle 43 Deep Impact comet 43 LISA Pathfinder 43 Ouyang Ziyuan chief 43 WGS Block 43 Geosynchronous Satellite Launch Vehicle 43 VASIMR 43 SMOS Soil Moisture 43 astronaut Yuri Gagarin 43 #/#-hour parachute 43 Gilbrech 43 orbiting 43 Rover MER 42 astronaut Rick Sturckow 42 Mössbauer spectrometer 42 Human Spaceflight Microgravity 42 countdown dress rehearsal 42 moon Schirra 42 O OREOS 42 Shuttle Endeavor 42 Japanese Kibo laboratory 42 Operation IceBridge 42 robotic spacecraft 42 SIM PlanetQuest 42 Soyuz TMA spacecraft 42 Lockheed Martin Waterton Canyon 42 Robert Satcher 42 orbiting observatory 42 Lunar Reconnaissance Orbiter Camera 42 Taurus Littrow Valley 42 Origins Spectral Interpretation 42 Solid Liquid Mixtures 42 Orion capsule 42 shepherding spacecraft 42 VSS Enterprise 42 Crew Launch Vehicle 42 cosmonauts Sergei Volkov 42 MidSTAR 42 robotic probes 42 Martian surface 42 Roman Romanenko 42 lunar excursion 42 Apollo moonshots 42 biometeorology became 42 specialists Scott Parazynski 42 astronaut Rex Walheim 42 rover 42 prototype humanoid robot 42 Sacred Vessel 42 Ron Garan 42 stationary lander 42 spaceflyer 42 Space Shuttle Discovery 42 interplanetary spacecraft 42 Cassini Equinox 42 Giove B 42 Boris Chertok 42 Shuttle Challenger 42 Ed Weiler NASA 42 CHIPSat 42 Huygens lander 42 Planetary Transits 42 Yuri Lonchakov 42 Bell Aerosystems 42 Ares IX rocket 42 Cosmonauts Sergei Volkov 42 Deke Slayton 42 sols 42 Mars rovers Opportunity 42 ion propulsion 42 Alan Shepard 42 ARCTUS 42 Resourcesat 2 42 Minotaur IV 42 spaceflyers 42 SSETI Express 42 Oefelein piloted 42 specialists Lisa Nowak 42 GPS IIF 42 Skylab astronaut Owen Garriott 42 Rosetta comet chaser 42 Russian Alexander Kaleri 42 NASA COBE satellite 42 unmanned spaceplane 42 Ralph McNutt 42 asteroids Ceres 42 Launch Abort System 42 Richard Vondrak 42 uncrewed 42 Hayabusa 42 Lt. Col. Yang Liwei 42 outer space 42 INSAT 4C 42 RSRMs 42 Discovery undocked 42 Actor Keir Dullea 42 Kepler Space Telescope 42 parafoil 42 rover Spirit 42 Herschel telescope 42 LRO LCROSS 42 Vin Fiz 42 NASA Kepler 42 Pegasus XL 42 Russian crewmate Yuri 42 moonwalker Buzz Aldrin 42 Grote Reber 42 GIOVE B 42 ExoMars 42 Scott Crossfield 42 Paul MacCready 42 Johns Hopkins Applied Physics 42 Fermi telescope 42 Hubble 42 Helen Sharman 42 lunar orbiter Chandrayaan 42 scramjet engine 42 Douglas Mawson 42 PSLV C6 42 Comet #P/Churyumov-Gerasimenko 42 Astronaut Randolph Bresnik 42 Laurie Leshin 42 Project Ozma 42 moon landings 42 Kibo JPM JEM Pressurized 42 humanoid robot R2 42 Skvortsov seasoned military 42 NASA Space Shuttle 42 NASA Far Ultraviolet 42 commander Sergei Krikalev 42 MARSIS 42 Impact Probe MIP 42 Martian orbit 42 shuttle Challenger 42 manned spacecraft 42 WhiteKnight 42 Descent Imager Spectral Radiometer 42 Crew Exploration 42 Vladimir Komarov 42 WISE infrared 42 Russia Khrunichev 42 Christa McAuliffe backup 42 Proba 2 42 manned Soyuz 42 robotic explorers 42 Yinghuo 1 42 Rocketplane 42 Ares I. 42 EPOXI mission 42 Rockot 42 Wilkinson Microwave Anisotropy Probe 42 planetary Transits 42 SBIRS HEO 42 Ranging spacecraft 42 capsule 42 docking compartment 42 C #E Hercules 42 Muszaphar 42 Compton Gamma Ray 42 WISE mapped 42 Moon Mineralogy Mapper M3 42 Churyumov Gerasimenko 42 Space Agency 42 Ulysses spacecraft 42 SCISAT 42 Kaguya probe 42 NASA Microgravity 42 Mars rover Curiosity 42 astronaut Andrew Feustel 42 Russian cosmonauts Andrei Borisenko 42 SpaceX Falcon 9 42 M. Wally Schirra 42 Gorie 42 Bjarni Tryggvason 42 Kepler spacecraft 42 Flyby spacecraft 42 ATV Johannes Kepler 42 Susan Kilrain 42 Space Explorations 42 MESSENGER spacecraft 42 Shenzhou V spacecraft 42 exo planet 42 Jules Verne Automated Transfer 42 twin Voyager spacecraft 42 Budarin 42 Shuttle Discovery 42 WISE spacecraft 42 Shenzhou VII 42 E. Peary 42 GOCE 42 SuitSat 42 Terrain Mapping Camera 42 astronomer Johannes Kepler 42 shuttle liftoffs 41 manned spaceships 41 NASA MESSENGER spacecraft 41 Great Observatories 41 Cargo Launch Vehicle 41 unpiloted 41 STP S# 41 THEMIS mission 41 Mars CRISM 41 Sorcerer II 41 orbiter robotic arm 41 Cernan 41 Surayev 41 Educator Astronauts 41 X #A 41 Valery Tokarev 41 ESA Planck 41 Ariane launcher 41 lunar probe Chang'e 41 satellite Sputnik 41 HyFly 41 William Readdy NASA 41 KSLV 41 Louis Joey Nacke 41 PSLV C9 41 Taikonaut 41 Space Infrared Telescope 41 Orbital Pegasus 41 Divine Vessel 41 Discovery astronauts 41 SLC 3E 41 SpaceShip Two 41 Nimrod expedition 41 Solar Orbiter 41 Jack Lousma 41 P Churyumov Gerasimenko 41 remote sensing satellite Resourcesat 41 Samokutyaev 41 irregularly shaped asteroid 41 NFIRE 41 rovers Spirit 41 Solar Dynamics Observatory 41 Deep Impact mission 41 orbiters 41 Stuhlinger 41 Space ENvironment GEochemistry 41 Europa Orbiter 41 Commander Leroy Chiao 41 Red Planet 41 Eagle lunar lander 41 Viking orbiters 41 Joe Acaba 41 OSTM Jason 2 41 Solar TErrestrial RElations Observatory 41 Orbital Taurus 41 Homi Bhabha 41 Michael Zolensky 41 Hubble servicing 41 NEEMO 41 Stratospheric Observatory 41 PSLV C# rocket 41 Mars orbiting spacecraft 41 hypersonic speeds 41 Noachian era 41 WMAP satellite 41 moonbase 41 Joseph Acaba 41 Sergei Volkov 41 Dean Pesnell 41 Cosmic Background Explorer COBE 41 Geo synchronous 41 MetOp satellite 41 Kirstie McCool Chadwick 41 DragonLab 41 Joel Sitz 41 STORRM 41 Atlantis 41 X ray spectrometer 41 astronomer Tycho Brahe 41 Opportunity Mars rovers 41 Mars northern latitudes 41 Operation Paperclip 41 probe Chang'e 41 Giovanni Schiaparelli 41 Salyut 41 Garret Reisman 41 spaceships 41 ARRL AMSAT 41 RD AMROSS RD 41 SIRTF 41 Jeff Ollenburger 41 Atlantis undocks 41 Waco biplane 41 ISS Expedition 41 Lopota 41 Charon Pluto 41 Russian Nikolai Budarin 41 Huygens descent 41 Brazilian Marcos Pontes 41 Bob Curbeam 41 Virgin Galactic spaceship 41 Father Junipero Serra 41 Asteroid Itokawa 41 Joe Melko 41 orbiting Hubble Space Telescope 41 Mars 41 NASA astronaut corps 41 Dryden Aircraft 41 laser altimetry 41 Nasa Kepler 41 spacewoman 41 Dyna Soar 41 CubeSat 41 planetary geology 41 X #A scramjet 41 NIRSpec 41 lunar orbit 41 arctic plains 41 Audrey McCool 41 JAXA Satoshi Sano 41 Laboratory MSL 41 Lieutenant Colonel Yang Liwei 41 Astronaut Sunita Williams 41 DART spacecraft 41 Milt Heflin chief 41 HEO payload 41 Air Force Evolved Expendable 41 engineer Salizhan Sharipov 41 hypersonic scramjet 41 Granma yacht 41 Simonetta Di Pippo ESA 41 GSLV D2 41 Stardust 41 GRAIL 41 gamma ray spectrometer 41 radio occultation 41 extravehicular activity EVA 41 Col. Yang Liwei 41 cosmonaut Fyodor Yurchikhin 41 Rusty Schweickart 41 Infrared Astronomical Satellite IRAS 41 Astro Aerospace 41 Minotaur rocket 41 Tom Marshburn 41 Canadian Julie Payette 41 orbit insertion 41 shuttle Discovery 41 Orbital Taurus II 41 HTV2 41 buckypaper virtually 41 indigenous cryogenic stage 41 Orbital Sciences Taurus 41 orbit 41 Constellation Ares 41 Hubble telescope 41 ESA Astronaut 41 Spacewalking 41 D CIXS 41 Charles Elachi 41 sub orbital 41 NASA rover Spirit 41 Russian cosmonaut Alexei Leonov 41 TIE fighter 41 ocean liner Titanic 41 payload fairings 41 Superfortress bomber 41 astronauts Jing Haipeng 41 spaceflights 41 NASA Wallops 41 Diviner 41 dubbed taikonauts 41 Zhai Zhigang 41 lunar meteorites 41 Pilot Terry Virts 41 Recovery Experiment SRE 41 HiRISE camera aboard 41 manager Gerhard Schwehm 41 robot rovers 41 Ultraviolet Imaging Spectrograph UVIS 41 FASTSAT 41 Randy Bresnik 41 Centaur upper 41 yacht Granma 41 COBE 41 Cargo Ship Docks 41 Evolved Expendable Launch Vehicle 41 Peenemunde 41 X #B Orbital 41 rovers 41 Yuri Shargin 41 astronomer Clyde Tombaugh 41 NAVSTAR Global Positioning System 41 Huygens 41 LightSail 41 Ken Bowersox 41 Servicing Mission 41 BUZZ ALDRIN 41 Dryden Flight Research 41 Wallops Island Va. 41 Russian cosmonaut Yury Malenchenko 41 cosmonaut training 41 Insat 3A 41 USS Thresher 41 astronaut Wally Schirra 41 Craig Tooley LRO 41 Infrared Astronomy 41 Stardust mothership 41 SpaceX Dragon capsule 41 Shenzhou capsules 41 Soyuz Fregat rocket 41 Hubble gyroscopes 41 CARTOSAT 41 Robotic Lunar Lander 41 Frederick Sturckow 41 comet Wild 41 Multi Object Spectrometer 41 Michael Studinger 41 balky bolt astronauts 41 Terminal Countdown Demonstration 41 six wheeled rover 41 Liu Boming 41 Space Shuttle Orbiter 40 Korotev 40 Spaceward Bound 40 Virgin Galactic WhiteKnightTwo 40 NASA Mars rover 40 lunar probe 40 II D5 Fleet 40 JTAC declared 40 martian 40 traveled rocketship 40 Cassini 40 astronomer Percival Lowell 40 Pancam 40 Ares IY 40 Moon Mineralogy Mapper 40 Armstrong Aldrin 40 comet Boethin 40 orbiting gamma ray 40 Yury Malenchenko 40 P#/P# truss 40 manned missions 40 Kwajalein Island 40 spacesuit 40 orbiting Hubble telescope 40 NextSat 40 Shuttle Discovery blasts 40 Eagle lunar module 40 BSAT 3a 40 Mercury flyby 40 rocketry 40 MUSES C 40 Star Trek Scotty 40 space shuttle Discovery 40 orbital outpost 40 ill fated Beagle 40 Unmanned Combat Air 40 suborbital flight 40 robotic rover 40 designated naval aviator 40 SpaceShipTwo spacecraft 40 Interior Laboratory GRAIL 40 Yuri Dolgoruky 40 closest flyby 40 Luan Enjie 40 Fei Junlong 40 orbiter Cassini 40 NASA Lunar Crater 40 Dream Chaser 40 Galileo Galilei #-# 40 Sergei Korolyov 40 shuttle Atlantis STS 40 spaceliner 40 Samokutyayev 40 Burt Rutan SpaceShipOne 40 NASA Stardust NExT 40 Wernher Von Braun 40 Robert Behnken 40 Security Regolith Explorer 40 HiRISE camera