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(Click for frequent words.) 70 manned spaceflight 67 spaceflights 67 human spaceflight 64 suborbital spaceflight 64 space shuttle 63 NASA 62 manned spacecraft 61 suborbital 60 reusable spacecraft 59 astronauts 58 sub orbital 57 suborbital flight 57 Hubble servicing 57 spacecraft 56 SpaceShipOne 56 SpaceX 55 International Space Station 55 astronaut 55 suborbital flights 55 manned lunar landing 55 Richard Branson Virgin Galactic 55 orbital spaceflight 55 ferrying astronauts 55 manned missions 54 spaceflyer 54 lunar exploration 54 Gagarin flight 54 Nasa 54 hypersonic flight 54 Space Shuttle 54 Earth orbit 53 sub orbital spaceflight 53 aboard Skylab 53 NASA Administrator 53 NASA astronaut corps 53 suborbital spacecraft 53 suborbital space 53 spaceflyers 53 manned spaceship 53 Owen Garriott 53 Apollo missions 53 lunar missions 53 duration spaceflight 52 NASAs 52 shuttle Endeavor 52 Yury Gagarin 52 lunar landing 52 manned suborbital 52 spaceport 52 Russian cosmonaut Yuri Gagarin 52 dexterous robot 52 lunar landings 52 Atlantis STS 52 duration spaceflights 51 manned orbital 51 NASA Space Shuttle 51 Orion spacecraft 51 Cosmonaut Yuri Gagarin 51 Norm Thagard 51 NASA astronaut 51 Peter Diamandis 51 spacewoman 51 Rutan 51 crewed spacecraft 51 Chiaki Mukai 51 circumlunar 51 NewSpace 51 spokesman Michael Braukus 51 interplanetary missions 51 space shuttles 51 SpaceShip One 51 XCOR Aerospace 51 Ron Garan 50 shuttle missions 50 Kliper 50 microgravity 50 MirCorp 50 Pilot George Zamka 50 lunar lander 50 spaceliner 50 Centennial Challenges 50 Virgin Galactic 50 William Readdy NASA 50 Ares rocket 50 spacecraft SpaceShipTwo 50 shuttle 50 Burt Rutan SpaceShipOne 50 spaceship 50 shuttle Discovery 50 Burt Rutan 50 Orion capsule 50 Judy Resnik 50 Jeff Greason 50 Bigelow Aerospace 50 cosmonaut Fyodor Yurchikhin 50 unpiloted 50 Gene Cernan 50 Soyuz 50 Konstantin Feoktistov 50 Valentina Tereshkova 50 Commander Pam Melroy 50 Simonetta Di Pippo ESA 50 SpaceShipTwo SS2 50 robotic spacecraft 50 weightlessness 50 Budarin 50 Soviet cosmonaut Yuri Gagarin 50 SPACEHAB 50 Space Adventures 50 planetary exploration 49 Nasa astronaut 49 Richard Garriott 49 John Gedmark 49 SpaceShipOne designer 49 Soyuz rocket 49 Mercury Gemini 49 manned lunar missions 49 Shuttle Endeavour blasts 49 Soviet cosmonaut Valentina Tereshkova 49 spaceplane 49 William Gerstenmaier 49 Suborbital 49 astronaut Owen Garriott 49 Piers Sellers 49 orbiting laboratory 49 Ansari X PRIZE 49 shuttle orbiter 49 manned lunar 49 Russian cosmonaut Yuri Usachev 49 Space Exploration 49 ZERO G 49 Jupiter Icy Moons 49 Scaled Composites 49 spaceline 49 ARCTUS 49 Spaceflight 49 spacewalk 49 William Readdy 49 Mojave Spaceport 49 orbiter 49 Shenzhou VII 49 SpaceX Dragon capsule 49 X PRIZE 49 spacecrafts 49 Mars# 49 Perminov 49 Virgin Galactic unveils 49 Ken Bowersox 49 Space Shuttle Endeavor 49 orbital rendezvous 49 Wallops Island 49 commercial spaceline 49 Shana Dale 49 Spaceport America 49 aboard Atlantis 49 skipper Peggy Whitson 48 shuttle Atlantis 48 SpaceX Falcon 9 48 Cernan 48 shuttle Endeavour STS 48 spacewalking 48 Space Station 48 Readdy 48 Kavandi 48 astronaut Jerry Linenger 48 cosmonaut Yuri Gagarin 48 Shenzhou VI 48 suborbital spaceflights 48 Reusable Launch Vehicle 48 extravehicular activities 48 Ellison Onizuka 48 Alexander Samokutyayev 48 cosmonaut 48 XCOR 48 Space Flight 48 spaceships 48 lunar landers 48 Jupiter Icy Moons Orbiter 48 spacewalks 48 manned spaceflights 48 Earth orbit LEO 48 Soyuz TMA spacecraft 48 Shuttle Endeavor 48 suborbital spaceships 48 Gedmark 48 spacefarers 48 Crew Exploration 48 astronaut Shannon Lucid 48 Soyuz capsule 48 Soyuz spacecraft 48 suborbital spaceship 48 Shuttle Discovery 48 commercial spaceflights 47 Bjarni Tryggvason 47 Commercial Spaceflight Federation 47 shuttle Challenger 47 Robert Hoot Gibson 47 planetary explorations 47 Col. Yang Liwei 47 Mike Melvill 47 Lori Garver 47 orbit 47 astronautics 47 spaceports 47 Zero Gravity Corporation 47 Garret Reisman 47 cosmonautics 47 Dominic Gorie 47 Gus Grissom 47 Peter Diamandis founder 47 VSS Enterprise 47 Garriott 47 shuttle fleet 47 Yury Malenchenko 47 Norman Thagard 47 orbited Earth 47 spaceflight participant 47 Shenzhou spacecraft 47 windshield wiper maneuver 47 Rutan SpaceShipOne 47 Alan Lindenmoyer manager 47 X Prize 47 Space Shuttle Discovery 47 astronaut Peggy Whitson 47 astronaut Charles Camarda 47 Manned missions 47 NASTAR Center 47 Sally Ride 47 Russian Soyuz 47 orbiting complex 47 astronauts Jing Haipeng 47 CEO Jeff Greason 47 Plane OSP 47 Jerrie Cobb 47 commander Charlie Hobaugh 47 Laurie Leshin 47 Dyna Soar 47 Russian cosmonaut Valery Tokarev 47 cosmonauts 47 Anousheh Ansari 47 unmanned lunar 46 administrator Sean O'Keefe 46 Dennis Tito 46 parachutes malfunctioned 46 Ares IX rocket 46 CHIPSat 46 Roskosmos 46 Human Spaceflight Microgravity 46 #/#-hour spacewalk [001] 46 commander Dmitry Kondratyev 46 Vehicle CEV 46 Space Agency 46 Shuttle astronaut 46 Dragon capsule 46 Educator Astronaut 46 Hubble Servicing 46 UP Aerospace 46 Orbital Express 46 liftoff 46 SpaceDev 46 orbiting observatories 46 Space Shuttle Endeavour 46 microgravity environment 46 orbiting shuttle 46 unmanned probes 46 Astronaut Scholarship 46 SpaceX Dragon 46 Orbital Space 46 Vostok spacecraft 46 zero gravity 46 Shannon Lucid 46 SpaceshipTwo 46 American Astronautical Society 46 engineer Timothy Kopra 46 astronaut Yang Liwei 46 moonwalkers 46 BepiColombo 46 manned spaceships 46 Rocketplane 46 Jing Haipeng 46 Sirangelo 46 Zero Gravity Corp. 46 Soyuz rockets 46 reusable suborbital 46 Discovery liftoff 46 NASA Centennial Challenges 46 Nikolai Budarin 46 Takao Doi 46 scramjet 46 reusable manned spacecraft 46 Roger Launius 46 Infrared Astronomy SOFIA 46 father Owen Garriott 46 shuttle orbiters 46 Zhang Jianqi 46 Discovery STS 46 catapulted Melroy 46 Gerstenmaier 46 shuttle Endeavour 46 Gemini Apollo 46 Richard Gilbrech 46 Landing Facility 46 Christopher Scolese 46 Yuri Night 46 Heidemarie Stefanyshyn Piper 46 Orion Ares 46 orbiters 45 Shenzhou 45 Story Musgrave 45 Julie Payette 45 Mars Pathfinder 45 Walter Schirra 45 manager Mike Suffredini 45 Krikalev 45 Commander Dick Scobee 45 shuttle Atlantis STS 45 crewed missions 45 experimental payloads 45 atmospheric reentry 45 Spacewalker 45 shuttle astronauts 45 SpaceShipOne rocket 45 George Zamka 45 ISS resupply 45 Col. Pamela Melroy 45 Japanese astronaut Takao 45 SpaceShipTwo 45 JAXA 45 WhiteKnight Two 45 Lunar Lander Challenge 45 shuttle Discovery STS 45 Astronaut Sunita Williams 45 Alexei Leonov 45 Planetary Society 45 blastoff 45 Shuttle Challenger 45 Space 45 Foton M2 45 Spacehab 45 Russian Soyuz spacecraft 45 spacesuit 45 Yang Liwei 45 spacefaring 45 Shuttle commander 45 Bill Readdy NASA 45 Rusty Schweickart 45 planetary missions 45 spokesman Igor Panarin 45 Manned Spacecraft Center 45 Pete Siebold 45 Russian Soyuz rocket 45 Payload Specialist 45 Based Infrared 45 Astrotech 45 Mirelson 45 aeronautics 45 STORRM 45 Grammier 45 scramjets 45 ion propulsion 45 teacher Christa McAuliffe 45 Russian Mikhail Tyurin 45 MetOp satellite 45 NASA Astronaut 45 hypersonic scramjet 45 engineer Burt Rutan 45 lunar module pilot 45 Randy Bresnik 45 Spacesuits 45 OSIRIS Rex 45 Daniel Sacotte ESA 45 Paulo Nespoli 45 Shenzhou spaceships 45 spacewalker 45 space shuttle Discovery 45 Shenzhou V 45 Spacewalks 45 uncrewed 45 Astronaut Randolph Bresnik 45 Systems Mission Directorate 45 director Gene Kranz 45 Soyuz craft 45 VASIMR 45 lunar explorer 45 Joel Sitz 45 Minotaur IV rocket 45 robotic rovers 45 Wally Schirra 45 countdown dress rehearsal 45 Deep Impact mission 45 Bob Thirsk 45 Lopota 45 Pam Melroy 45 Minotaur rocket 45 Bowersox Pettit 45 orbital insertion 45 NASA astronaut Sunita 45 Israeli astronaut Ilan 45 Christa McAuliffe backup 45 aboard Soyuz TMA 45 NASA STEREO 45 Naoko Yamazaki 44 Cape Canaveral 44 Regional Spaceport 44 Valery Polyakov 44 Oleg Ivanovsky 44 commander Leroy Chiao 44 NSBRI 44 Soviet cosmonaut Yury Gagarin 44 Russians Alexander Kaleri 44 space shuttle Endeavour 44 Dream Chaser 44 aboard Soyuz rocket 44 heliophysics 44 Charles Simonyi 44 rocketships 44 Russian cosmonaut Alexander Kaleri 44 Minotaur IV 44 Stardust capsule 44 astronaut corps 44 Shenzhou VII spacecraft 44 Shuttle Endeavour 44 moonbase 44 Proba 2 44 Yuri Gagarin 44 taikonaut 44 Spaceward Foundation 44 Shenzhou IV 44 Charles Camarda 44 Sun Laiyan 44 pilot Charlie Hobaugh 44 intergalactic spaceship 44 De Winne 44 Virgin Galactic spaceline 44 www.xprize.org 44 tourist Charles Simonyi 44 commander Zhai Zhigang 44 mission Chandrayaan 44 Endeavour docked 44 ARRL AMSAT 44 Shenzhou manned 44 commander Dick Scobee 44 CAIB recommendations 44 Alexander Kaleri 44 microgravity experiments 44 SCISAT 44 manned spacecraft Shenzhou VI 44 winged spacecraft 44 Cape Canaveral FL AHN 44 moonship 44 Elon Musk SpaceX 44 supersonic airliner 44 Situ Resource 44 Wallops Flight Facility 44 Buzz Aldrin Apollo 44 Zhai Zhigang 44 Canadian Julie Payette 44 Cosmonautics Day 44 Solar TErrestrial RElations Observatory 44 Endeavour STS 44 Carl Marchetto 44 Fyodor Yurchikhin 44 Mamoru Mohri 44 SBIRS GEO 44 deorbiting 44 Skylab 44 Huygens mission 44 moon landings 44 LCROSS mission 44 Heidemarie M. 44 Zhai Zhigang Liu Boming 44 Commander Charlie Hobaugh 44 Andrey Borisenko 44 BepiColombo mission 44 outer space 44 Muszaphar 44 Holly Ridings 44 manned Soyuz 44 Discovery undocks 44 Gorie 44 pilot Charles Hobaugh 44 Atlantis undocks 44 Kalpana Chawla 44 MOJAVE Calif. 44 David Southwood ESA 44 Visit SPACE.com 44 Weightless Wonder 44 Satcher Jr. 44 Lunar Module Pilot 44 Gene Kranz 44 DragonLab 44 Space Shuttle Program 44 Shuttle undocks 44 LADEE 44 spaceward 44 Atlantis astronauts 44 Ed Weiler 44 Soviet cosmonauts 44 Bill Gerstenmaier 44 Mars Opportunity rover 44 NASA Wallops 44 Commander Pamela Melroy 44 Spaceport 44 astronaut Rex Walheim 44 MidSTAR 44 Norm Augustine 44 Hubble Space telescope 44 Commander Eileen 44 Daniel Tani 44 MUOS satellite 44 specialists Scott Parazynski 44 Barry Butch Wilmore 44 Interorbital Systems 44 simulated weightlessness 44 Canadarms 44 orbiting observatory 43 robotic explorer 43 X #A 43 Astronaut 43 manned Shenzhou 43 Mars rovers 43 agency Roskosmos 43 Atlantis Undocks From 43 Virgin Galactic SpaceShipTwo 43 Nicole Stott 43 Northrop Grumman Lunar Lander 43 unmanned spaceplane 43 Dr. Mae Jemison 43 Discovery astronauts 43 NEEMO 43 Apollo Soyuz 43 Qi Faren 43 Excalibur Almaz 43 Scott Parazynski 43 Sacred Vessel 43 Yuri Koptev 43 Rick Searfoss 43 CAPE CANAVERAL FLORIDA 43 Rick Linnehan 43 Kirk Shireman 43 Cosmonaut Valery Tokarev 43 GeneSat 1 43 Simonyi 43 X #A scramjet 43 Ilan Ramon 43 Rocketplane XP 43 Microgravity 43 robotic rover 43 engineer Nicole Stott 43 Shuttle Discovery blasts 43 Great Moonbuggy Race 43 Tom Marshburn 43 rocketship 43 Baikonur 43 NAVSTAR Global Positioning System 43 Joyce Winterton 43 Cosmodrome 43 Masten Space Systems 43 aboard Soyuz spacecraft 43 Shenzhou V spacecraft 43 Ares IX 43 Ed Weiler NASA 43 Fincke radioed 43 Space Shuttle Atlantis 43 Lt. Col. Yang Liwei 43 ISS crewmember 43 astronauts aboard 43 Astronauts inspect 43 Virgin Galactic Branson 43 director Chuck Dovale 43 X #B Orbital 43 Cassini Huygens 43 Shenzhou VII mission 43 STS 43 Commander Rick Sturckow 43 astronauts Zhai Zhigang 43 Russian Nikolai Budarin 43 Paul Spudis 43 astronaut Julie Payette 43 Yuri Shargin 43 orbital outpost 43 Pamela Melroy 43 Sergei Korolyov 43 Russian Soyuz capsules 43 rocketry 43 Ron Dittemore 43 NM spaceport 43 tourist Richard Garriott 43 Stefanyshyn Piper 43 autonomous rendezvous 43 ISS crewmembers 43 lunar rover 43 orbiting lab 43 spacefaring nation 43 Soyuz capsule carrying 43 Mike Suffredini 43 Russian cosmonauts Andrei Borisenko 43 Apollo lunar 43 spokesman Robert Mirelson 43 deorbit 43 SpaceX Falcon 43 Human Spaceflight 43 heaviest payloads 43 Lieutenant Colonel Yang Liwei 43 Atlantis rocketed 43 Ansari X 43 astronauts Nicole Stott 43 spokesman Paul Foerman 43 Orion Crew 43 Rosaviakosmos 43 Shuttle astronauts 43 Space Shuttles 43 Grunsfeld 43 NEOSSat 43 Bill Gerstenmaier NASA 43 Chang'eI 43 Barbree 43 Soviet cosmonaut 43 lunar orbiter 43 NASA Stratospheric Observatory 43 GPS IIR M 43 NASA Jet Propulsion Lab 43 X #B 43 Peter H. Diamandis 43 Japanese astronaut Naoko 43 NASTAR SM Center 43 orbiting 43 Edwin Aldrin 43 Malenchenko 43 SPACE STATION 43 satellite Sputnik 43 Shuttle Discovery docks 43 Eileen Collins 43 Roscosmos 43 lunar module Eagle 42 Astronaut Karen Nyberg 42 OSIRIS REx 42 SpaceLoft XL 42 Giove B 42 Randolph Bresnik 42 Peter Diamandis chairman 42 Baikonur Kazakhstan 42 astronautical 42 Bill Gerstenmaier associate 42 NPOESS 42 ESA astronaut 42 National Aeronautics 42 robotic explorers 42 commander Peggy Whitson 42 spacefaring nations 42 Shenzhou orbital modules 42 NASA Headquarters 42 Mark Uhran NASA 42 traveled rocketship 42 FASTSAT 42 Shenzhou VI spacecraft 42 Commercial Spaceflight 42 spacefaring civilization 42 Curiosity rover 42 astronaut Jack Lousma 42 specialists Lisa Nowak 42 Chiao 42 Isro 42 MOJAVE Calif. Virgin Galactic 42 NASA Langley 42 Frank DiBello 42 PSLV rocket 42 SELENE probe 42 KSC Visitor Complex 42 Stratospheric Observatory 42 Cape Canaveral Fla. 42 lunar 42 LRO LCROSS 42 Shargin 42 Foton M3 42 Kazakhstan Baikonur cosmodrome 42 Tim Kopra 42 Shuttle Endeavour docks 42 G. Madhavan Nair 42 extravehicular activity EVA 42 designer Burt Rutan 42 Russian cosmonaut Yuri Malenchenko 42 Fred Haise 42 defective gyroscope 42 LISA Pathfinder 42 Lunar Lander 42 Maxim Surayev 42 Dottie Metcalf Lindenburger 42 Russian cosmonaut 42 venerable Soyuz rocket 42 STSS Demo 42 spacemen Timothy Kopra 42 ShareSpace Foundation 42 lunar expeditions 42 John Brunschwyler 42 Astrogenetix 42 astrobiology 42 Mars orbiter 42 Mexico Spaceport 42 Russian cosmonaut Alexei Leonov 42 Yuri Malenchenko 42 Foale 42 Ngo Anh 42 humanoid robot bound 42 Peggy Whitson 42 astronaut Pam Melroy 42 Xie Mingbao 42 Commander Peggy Whitson 42 ROCSAT 2 42 Klinkrad 42 Astrobotic 42 ice cream tubby 42 Andrei Borisenko 42 Laser Interferometer Space 42 George Whitesides 42 unplanned spacewalk 42 wife commissioned Celestis 42 orbital 42 SPACE.com 42 Fincke Greg Chamitoff 42 SpaceDev Dream Chaser 42 Konstantin Tsiolkovsky 42 NASA Wallops Flight 42 Starchaser 42 Simonetta Di Pippo 42 chief Anatoly Perminov 42 Mark N. Sirangelo 42 Yinghuo 1 42 Dordain 42 STEREO mission 42 Frank Borman 42 Japanese astronaut Koichi 42 orbital maneuvering 42 Manned Space 42 Russian cosmonaut Maxim Suraev 42 NanoRacks 42 space module Tiangong 42 veteran spaceflyer 42 executive Seymour Himmel 42 MErcury Surface Space ENvironment 42 planetary Transits 42 Vitaly Davydov deputy 42 based Midcourse Defense 42 Launch Scrubbed 42 budging Wheelock told 42 Rocketplane XP spacecraft 42 Launch Vehicle 42 Ariane rocket 42 Dr Sheikh Muszaphar 42 Roman Romanenko 42 Barry Wilmore 42 Satoshi Furukawa 42 Saturnian moon Titan 42 liftoffs 42 astronauts Douglas Wheelock 42 Shane Kimbrough 42 Rain overcast sky 42 Foton M3 mission 42 Eric Boe 42 Ashly Costa 42 SpaceShip Two 42 robotic landers 42 director Gary Horlacher 42 Technologies SpaceX 42 Anatoly Perminov 42 Kent Rominger 42 IceBridge 42 Admiral Gehman 42 engineer Kalpana Chawla 42 entrepreneur Elon Musk 42 NuSTAR 42 Airborne Laser 42 McNair Ellison Onizuka 42 DubaiSat 1 42 Lunar X PRIZE 42 Yuri Gagarin blasted 42 commander Sergei Volkov 42 Shuttle Docks 42 Crew Launch Vehicle 42 Exploration Vehicle 42 John Grunsfeld 42 infrared astronomy 42 Martian rovers 42 unmanned spacecraft 42 Commander Sergei Krikalev 42 Buzz Aldrin 42 Virgil I. 42 spacewalking astronauts 42 shuttle undocks 42 weather satellite TIROS 42 Astronaut Gregory Chamitoff 42 GEochemistry 42 Liu Boming 42 Russian Valeri Polyakov 42 Astronauts 42 Vladimir Komarov 41 reentries 41 Derek Hassmann 41 Soyuz capsules 41 Richard Linnehan 41 lunar rovers 41 Payload Operations Center 41 Stafford Covey 41 Orion CEV 41 space 41 suborbital rockets 41 Aeronautics Subcommittee 41 Kibo module 41 Extra Vehicular Activity 41 Glonass K 41 Shuttle Endeavour undocks 41 Jim Paulsen SSME 41 Soyuz spaceship 41 Launch Abort System 41 Russian cosmonaut Fyodor Yurchikhin 41 Huygens Probe 41 SPACEHAB Incorporated NASDAQ SPAB 41 NASA THEMIS 41 Lunar Module 41 Nasa spacecraft 41 Shuttle 41 Shenzhou VI craft 41 suborbital rocket 41 Fossum Piers Sellers 41 Sergei Volkov 41 Shuttle Discovery undocks 41 WK2 41 Lunar Reconnaissance Orbiter LRO 41 orbital debris 41 Shuttle Atlantis 41 Joseph Acaba 41 Alexander Samokutyaev 41 Virgin Galactic suborbital 41 NASA Wallops Island 41 Eyharts 41 ESMD 41 Mrs. Bresnik 41 GeneSat 41 Kepler spacecraft 41 Sevastyanov 41 JIMO mission 41 probe Huygens 41 Cape Canaveral Air Force 41 Orbital Outfitters 41 spokesperson Allard Beutel 41 resident Nicole Stott 41 Suni Williams 41 A# spacecraft 41 Russian cosmonauts Sergei Volkov 41 Scolese 41 Endeavour 41 NASA Lunar Crater 41 Cryosat 41 Sunita Williams 41 Jon Karkow 41 aeronautics subcommittee 41 Progress resupply 41 Russell Schweickart 41 Virgin Galactic spaceship 41 planetary science 41 Rosetta spacecraft 41 DARPA 41 Col. Ilan Ramon 41 Willie McCool 41 predecessor Sean O'Keefe 41 Alan Thirkettle 41 Russian Alexander Kaleri 41 Eugene Cernan 41 Sergei Krikalyov 41 Eileen Hawley 41 comet flyby 41 Donald Deke Slayton 41 DART spacecraft 41 LOCAD PTS 41 Manned spaceflight 41 SpaceLoft XL rocket 41 Rocketplane Ltd. 41 Astronaut Nicole Stott 41 Dittemore 41 Interior Laboratory GRAIL 41 JAXA Satoshi Sano 41 Fei Junlong 41 Nie Haisheng 41 Apollo Skylab 41 Baikonur Cosmodrome 41 Gravity Probe B 41 Carolyn Wincer 41 chief Bill Gerstenmaier 41 extravehicular activity 41 astronaut Sunita Williams 41 Frick radioed 41 hypersonic 41 timer Surayev 41 Administrator Lori Garver 41 O. Hobaugh 41 Spacewalking 41 space shuttle orbiters 41 Koichi Wakata 41 Replied Endeavour commander 41 André Borschberg 41 spokesman Glenn Mahone 41 cosmonaut corps 41 Adm. Harold Gehman 41 Diamandis 41 Astronaut Eileen 41 ramjet scramjet 41 RSC Energia 41 Nikolai Moiseyev 41 Pilot Terry Virts 41 TacSat 41 Helios 2B 41 Jean Jacques Dordain 41 scramjet engines 41 lunar excursion 41 Astronaut Peggy Whitson 41 orbiting outpost 41 exobiology 41 Air Force Evolved Expendable 41 Skylab astronaut Owen Garriott 41 middeck 41 Chandrayan 41 Astrotech Space Operations 41 SSMEs 41 comet chaser 41 Gu Yidong 41 Shenzhou capsule 41 Innovative Partnerships Program 41 astronaut Randy Bresnik 41 Kennedy Space 41 wounded congresswoman Gabrielle 41 Burt Rutan Scaled Composites 41 Craig Steidle 41 Mars Pathfinder lander 41 JWST 41 Altair lunar lander 41 historian Roger Launius 41 Crewmate Tracy Caldwell 41 Suffredini hinted 41 KazSat 41 ISS Expedition 41 Coleman Paolo Nespoli 41 spacewalking specialists 41 A. Cernan 41 launch tweetup 41 JIMO 41 spacesuits 41 colonize Mars 41 CubeSats 41 unmanned 41 Shuttle Derived 41 Sunita Suni Williams 41 Prodea Systems 41 lunar surface 41 Jules Verne ATV 41 celestial observations 41 F. Readdy NASA 41 memorial spaceflights 41 Byron Lichtenberg 41 mission Chandrayan 41 Robotic Exploration 41 director Charles Elachi 41 Ares IY 41 Foundation Weightless Flights 41 THEMIS mission 41 Virgin Atlantic GlobalFlyer 41 Oefelein piloted 41 Regenetech 41 EVAs 41 lunar outpost 41 Max Faget 41 LASP 41 station Skylab 41 Foton spacecraft 41 Heliophysics 41 BAIKONUR Kazakhstan 41 required daylight liftoffs 41 Russian crewmate Yuri 41 Landeene 41 Shuttle Launch Experience 41 unrecognizable Shipman 41 AIRSS 41 astronaut Leroy Chiao 41 Boris Morukov 41 ExoMars mission 41 Educator Astronauts 41 Novespace 41 Lopez Alegria 41 Rick Sturckow 41 STS #L 41 Lunar Outpost 41 Zamka 41 manned spacecraft Shenzhou 41 scientist Rafat Ansari 41 GPS IIF 41 undocks 40 Solar Dynamics Observatory 40 Flight Engineer Suni 40 Russian Valery Tokarev 40 Bob Ess