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(Click for frequent words.) 59 spaceflyers 57 crewed spacecraft 57 astronauts 55 commander Leroy Chiao 54 spacecraft 54 spacemen 54 extravehicular activities 53 director Gene Kranz 53 interplanetary missions 52 NASA 52 orbital rendezvous 51 duration spaceflights 51 Charles Hobaugh 51 engineer Salizhan Sharipov 51 circumlunar 51 lunar landers 51 Shuttle Discovery astronauts 51 Commander Leroy Chiao 50 director Tony Ceccacci 50 Discovery astronauts 50 budging Wheelock told 50 SpaceX Dragon 50 Mars landers 50 extravehicular mobility units 50 Budarin 50 Canadian Julie Payette 50 orbiters 50 Bowersox Pettit 50 Commander Rick Sturckow 50 robotic explorer 50 Foton spacecraft 49 SpaceshipTwo 49 Pamela Melroy 49 Comet Churyumov Gerasimenko 49 adventure Chamitoff radioed 49 spaceflights 49 Fincke radioed 49 landers 49 Soyuz docked 49 Commander Pam Melroy 49 Progress resupply 49 spacewalkers 49 uncrewed 49 robotic rovers 49 Shenzhou spacecraft 49 Spirit Mars rover 49 manned missions 49 Dominic Gorie 48 commander Charlie Hobaugh 48 unmanned probes 48 Nasa spacecraft 48 Shenzhou IV 48 celestial observations 48 spacecrafts 48 Ken Bowersox 48 commander Dmitry Kondratyev 48 Kliper 48 Heidemarie M. 48 NASAs 48 orbit insertion 48 Foton M3 48 Pete Theisinger 48 thruster firings 48 radioed congratulations 48 Canadarms 48 spaceflight 48 Soyuz TMA spacecraft 48 Curiosity rover 48 Nickolenko informed 48 Twittering invitees 47 astronauts Jing Haipeng 47 duration spaceflight 47 orbiter 47 astronauts Zhai Zhigang 47 Jupiter icy moons 47 Mars orbiter 47 robotic probes 47 Orbiters 47 engineer Timothy Kopra 47 spokesman Michael Braukus 47 Soviet cosmonauts 47 Cape Canaveral Nasa 47 Pilot George Zamka 47 shuttle Atlantis astronauts 47 rovers Spirit 47 director Charles Elachi 47 Padalka 47 Shuttle Atlantis undocked 47 Endeavour astronauts 47 Saturn Cassini 47 robotic landers 47 Frenchman Leopold Eyharts 47 LEOP 47 microgravity experiments 47 robotic spacecraft 47 commander Fyodor Yurchikhin 47 International Space Station 47 spaceship 46 planetary missions 46 Muszaphar 46 Vitaly Davydov deputy 46 robotic explorers 46 Cargo Launch Vehicle 46 De Winne 46 Nasa 46 Astronaut Leroy Chiao 46 Jing Haipeng 46 Atlantis Undocks From 46 Mikhail Tyurin 46 LADEE 46 robot rovers 46 Soyuz spaceship 46 Shenzhou V 46 Phobos Grunt 46 CAPE CANAVERAL Shuttle Discovery 46 reusable spacecraft 46 JAXA 46 Yury Lonchakov 46 NEEMO 46 Piers Sellers 46 Salizhan Sharipov 46 Cassini Huygens 46 Jovian moons 46 lunar missions 46 Mars Opportunity rover 46 manned spaceship 46 Mission Control 46 Manned missions 46 Discovery undocks 46 Human Spaceflight Microgravity 46 Charlie Hobaugh 46 commander Gennady Padalka 46 worthwhile Schwehm 46 spokesman Igor Panarin 46 Shenzhou VII mission 46 Jupiter Icy Moons 46 Terrestrial Planet Finder 46 orbiting observatories 46 astronaut Joseph Acaba 46 Director Charles Elachi 46 Shuttle Endeavor 46 pilot Charlie Hobaugh 46 orbital mechanics 46 dexterous robot 46 spacewalking astronauts 46 Hubble gyroscopes 46 Space Agency 46 urine recycler 46 manned lunar missions 46 cosmonauts 45 taikonaut 45 rovers 45 shuttle missions 45 NuSTAR 45 Pirs module 45 Deep Impact comet 45 moonwalkers 45 lunar probes 45 Huygens mission 45 ICESCAPE 45 planetary Transits 45 Ron Garan 45 Martian rovers 45 interplanetary spacecraft 45 director Chuck Dovale 45 alien civilizations 45 spokesperson Allard Beutel 45 Soyuz 45 orbital maneuvers 45 Commander George Zamka 45 orbiting observatory 45 Philae lander 45 Gene Kranz 45 Ngo Anh 45 satellites orbiting Earth 45 enters lunar orbit 45 ISS crewmembers 45 Apollo missions 45 Shenzhou VI 45 Rosaviakosmos 45 Garret Reisman 45 cosmonaut Gennady Padalka 45 Cryosat 45 Daniel Sacotte ESA 45 ferrying astronauts 45 interplanetary 45 Mars# 45 STEREO spacecraft 45 twin Mars rovers 45 lunar expeditions 45 director Rick LaBrode 45 aboard Atlantis 45 Fei Junlong 45 NAVSTAR Global Positioning System 45 rocket thrusters 45 Akademik Fedorov 45 Norm Thagard 45 orbit 45 Eagle lunar lander 45 commander Dominic Gorie 45 Iridium satellites 45 Gedmark 45 Shenzhou manned 45 spacecraft Chandrayaan 1 45 manned Shenzhou 45 lunar orbiters 45 moonbase 45 Commander Fyodor Yurchikhin 45 astronaut Randy Bresnik 45 Taikonauts 45 Psychological profiling 45 Atlantis astronauts 45 engineer Oleg Kononenko 45 Paulo Nespoli 45 orbiting spacecraft 44 ExoMars mission 44 Atlantis undocks 44 ion propulsion 44 commander Sergei Volkov 44 Russian Orlan MK 44 Apollo astronauts 44 Launch Scrubbed 44 Chiao 44 defective gyroscope 44 chief Vladimir Solovyov 44 astronaut Charles Camarda 44 JIMO 44 Atlantis 44 extravehicular 44 Valery Lyndin spokesman 44 spaceliner 44 Plane OSP 44 Opportunity rovers 44 Fuk Li Mars 44 orbiting 44 Shannon Lucid 44 manned spaceships 44 observing satellites 44 Stratospheric Observatory 44 taikonauts 44 windshield wiper maneuver 44 Astronauts 44 SuitSat 44 engineer Yury Lonchakov 44 Mars orbiters 44 Takao Doi 44 crewmembers 44 Andrey Borisenko 44 Russian Salizhan Sharipov 44 Infrared Astronomy SOFIA 44 Space Station 44 Megha Tropiques 44 Shenzhou capsules 44 DMSP F# 44 Gagarin flight 44 Astronauts inspect 44 suborbital spacecraft 44 blastoff 44 GLONASS satellites 44 Launch Abort System 44 ExoMars rover 44 Shuttle Discovery blasts 44 W. Haise 44 atmospheric reentry 44 CALIPSO 44 terraforming Mars 44 Enceladus flybys 44 commander Pamela Melroy 44 Highly Adaptable Satellite 44 NASA rovers 44 Mars orbiting spacecraft 44 Commander Dominic Gorie 44 Shenzhou VI craft 44 George Zamka 44 liftoff 44 shuttle Endeavour astronauts 44 Noguchi greeting 44 Orbiter LRO 44 chief Anatoly Perminov 44 Mirelson 44 Perminov 44 Ed Weiler NASA 44 Alexander Samokutyayev 44 orbital 44 undocks 44 ExoMars 44 Isro 44 Grammier 44 GSAT 5P 44 Yuri Koptev 44 Lyndin 44 Saturnian moon Titan 44 spacewalking chores 44 Nie Haisheng 44 Kazakhstan Baikonur cosmodrome 44 GloPac 44 lunar landings 44 Virgin Galactic unveils 44 administrator Sean O'Keefe 44 commander Pam Melroy 44 NFIRE 44 Commander Oleg Kotov 44 maneuvering thrusters 44 director Ginger Kerrick 44 ESA ASI 44 Lunar Reconnaissance Orbiter LRO 44 GOES O 44 Terrians 44 astronaut Pam Melroy 44 Dordain 44 Russian cosmonaut Alexander Kaleri 44 Russian cosmonauts Fyodor Yurchikhin 44 John Callas rover 44 Atlantis STS 44 Rob Navias 44 Rosetta comet 44 William Readdy NASA 44 space farers 44 astrophysical phenomena 44 moon Europa 44 Mars rovers 44 Spacewalking 44 planetary alignments 44 Hubble servicing 43 Galileo satellites 43 AERONET 43 polar orbiting satellites 43 orbital inclination 43 shuttle Atlantis 43 reboost 43 Yinghuo 1 43 parachutes malfunctioned 43 Caldwell Dyson 43 Colin Pillinger Beagle 43 Kirk Shireman 43 mission Chandrayaan 43 rover Spirit 43 spacecraft SpaceShipTwo 43 Sturckow 43 Jim Paulsen SSME 43 Earth orbiting satellites 43 shuttle Discovery STS 43 Poisk 43 Sacred Vessel 43 Commander Gennady Padalka 43 Pirs Docking Compartment airlock 43 Yury Gagarin 43 Jules Verne ATV 43 lunar lander 43 manager Jennifer Trosper 43 Stardust NExT mission 43 orbiting Hubble Space Telescope 43 human spaceflight 43 Apollo Skylab 43 colonize Mars 43 director Derek Hassmann 43 spacewalks astronauts 43 Kavandi 43 Spacewalks 43 Professor Pillinger 43 #/#-hour spacewalk [001] 43 humanoid robot bound 43 Ares rockets 43 GSLV rockets 43 ESA Rosetta 43 countdown dress rehearsal 43 commander George Zamka 43 Shuttle Docks 43 manager Mike Suffredini 43 Grunsfeld 43 Rosetta spacecraft 43 Martian rover 43 astrobiological 43 spacewalks 43 ship thermal shielding 43 manned spacecraft 43 Bill Gerstenmaier NASA 43 teleoperated 43 space shuttle 43 SIM PlanetQuest 43 orbiting gamma ray 43 Eurobot 43 scientists 43 STEREO mission 43 exobiology 43 spokesman Paul Foerman 43 Engelauf 43 Chang'eI 43 humanoid robot R2 43 commander Zhai Zhigang 43 scramjets 43 Daniel Sacotte 43 spacewalkers Scott Parazynski 43 Discovery liftoff 43 orbiting astronauts 43 spacefaring 43 engineer Garrett Reisman 43 Ares IX rocket 43 Andrew Feustel 43 spaceships 43 Jupiter Icy Moons Orbiter 43 Konstantin Feoktistov 43 lunar module Eagle 43 unpiloted 43 lunar outpost 43 EPOCh 43 pilot Charles Hobaugh 43 suborbital spaceflight 43 lunar exploration 43 Mars moon Phobos 43 LISA Pathfinder 43 Spacesuits 43 Soyuz landings 43 simulate weightlessness 43 Bjarni Tryggvason 43 director Holly Ridings 43 orbiting laboratory 43 Tony Antonelli 43 Mars Odyssey spacecraft 43 Altair lunar lander 43 SCISAT 43 Joyce Winterton 43 deorbit 43 lunar orbits 43 Shenzhou spaceships 43 comets meteors 43 astronauts Hans Schlegel 43 manned lunar 43 Kenneth Bowersox 43 Boris Morukov 43 Soyuz spacecraft docked 43 amateur skywatchers 43 Charles Elachi 43 SIRTF 43 specialists Nicole Stott 43 spacecraft Cassini 43 orbital insertion 43 Mars# experiment 43 David Southwood ESA 43 Resourcesat 2 43 GOCE satellite 43 manned spaceflight 43 probe Chang'e 42 moons Phobos 42 unpiloted aircraft 42 Readdy 42 ISS Expedition 42 Huygens Probe 42 ESA astronaut Christer 42 Suborbital 42 shuttle Discovery 42 SpaceX Dragon capsule 42 Oceansat 2 42 Tryggvason 42 Sputnik beeped 42 grueling spacewalks 42 Soyuz undocking 42 Orion Ares 42 Extra Vehicular Activity 42 Excalibur Almaz 42 Russian Mikhail Tyurin 42 orbiters landers 42 Navias 42 spaceward 42 spacewalking 42 engineer Yuri Malenchenko 42 Earth orbit 42 Hubble Space telescope 42 shuttle thrusters 42 Nikolai Moiseyev 42 Russian Nikolai Budarin 42 Qi Faren 42 experienced spacemen 42 Shuttle Endeavour docks 42 MARSIS radar 42 redock 42 Zhang Jianqi 42 engineer Nicole Stott 42 lithium hydroxide canisters 42 Jean Pierre Lebreton Huygens 42 pressurized rovers 42 Russian cosmonauts Sergei Volkov 42 C1XS 42 sub orbital spaceflight 42 Shuttle undocks 42 shuttle undocks 42 Soyuz crewmates 42 NASA Cassini 42 astronautical 42 director Annette Hasbrook 42 suborbital spaceflights 42 Oefelein piloted 42 Titan flyby 42 Commander Charlie Hobaugh 42 Earth orbit LEO 42 cosmonaut Sergei Krikalev 42 Yuri Malenchenko 42 Phil Engelauf 42 deorbiting 42 EVAs 42 Sevastyanov 42 extrasolar worlds 42 Kaleri 42 lunar module 42 comet flyby 42 OSTM Jason 2 42 skipper Peggy Whitson 42 Shenzhou VII spacecraft 42 engineer Nikolai Budarin 42 EVA extravehicular activity 42 highly elliptical orbits 42 ESA Integral 42 KSLV 1 42 Orbital Module 42 postflight 42 HOUSTON Astronauts 42 WISE spacecraft 42 outer planets 42 SPHERES 42 terra forming 42 module Kibo 42 manned lunar landing 42 Nikolai Budarin 42 Orbiter MRO 42 STSS Demo 42 Jeff Greason 42 Solar TErrestrial RElations Observatory 42 earthling 42 Elachi 42 Eyharts 42 shuttle Discovery astronauts 42 rover Opportunity 42 Russians Alexander Kaleri 42 Biological Problems 42 Ronald Dittemore 42 polar explorers 42 agency Roskosmos 42 asteroid deflection 42 Alan Poindexter 42 microwave radiometers 42 Endeavour undocks 42 astronaut Piers Sellers 42 Laser Interferometer Space 42 Mars Polar Lander 42 Pluto Kuiper Belt 42 Holly Ridings 42 Russian cosmonaut Yuri Gagarin 42 Bob Thirsk 42 Italian Roberto Vittori 42 Martian lander 42 HAMSAT 42 Mars rovers Spirit 42 cosmonaut Valery Tokarev 42 Barry Wilmore 42 Environmental Satellite POES 42 Interior Laboratory GRAIL 42 spokesman Barron Beneski 42 lunar rovers 42 Desert RATS 42 Mars Lander 42 CAPE CANAVERAL Astronauts 42 Krikalev 42 commander Rick Sturckow 42 Alexander Samokutyaev 42 Shuichiro Yamanouchi 42 navigators 42 Nasa Kepler 42 Cryosat satellite 42 NEOSSat 42 robot locomotion 42 Permanent Multipurpose Module PMM 42 mission Chandrayan 42 Sergei Gorbunov spokesman 42 Shuttle Discovery docks 42 Cosmonauts 42 Huygens lander 42 flybys 42 Ares IY 42 habitable worlds 42 Ed Weiler 42 Russian cosmonauts 42 shuttle Endeavor 42 astronaut Shannon Lucid 42 Foton M2 42 zodiacs 42 Orbital Express 42 Kepler Mission 42 CDR SO 42 aboard Taurus XL 42 Zhai Zhigang Liu Boming 42 Zamka 42 LRO LCROSS 42 ISRO 42 Stardust spacecraft 42 seater Soyuz spacecraft 42 AMASE 42 Glonass satellites 42 Shenzhou 42 Balyasnikov 42 Valery Lyndin 42 PSLV rocket 42 commander Peggy Whitson 42 Hubble Space Telescope 41 GSLV D3 rocket 41 spacewalk 41 ISS robotic arm 41 Weightlessness 41 NASA satellites orbiting 41 voyagers 41 Richard Linnehan 41 Tranquillity Base 41 Mike Sarafin radioed 41 Xie Mingbao 41 Hubble 41 earthbound 41 Flight Engineer Suni 41 Cassini Huygens spacecraft 41 Mars rover 41 spaceflyer 41 Krimigis 41 turned mutant superheroes 41 interplanetary probes 41 Apollo Lunar Module 41 robotic Canadarm 41 meteorological satellites 41 Fincke 41 shuttle Endeavour STS 41 ROCSAT 2 41 shuttle Atlantis STS 41 BepiColombo 41 orbit GEO 41 astronaut Rex Walheim 41 Discovery STS 41 LOCAD PTS 41 astronaut helper 41 shuttle 41 Discovery undocked 41 angkasawan 41 Herschel Planck 41 Bob Behnken 41 extraterrestrial civilizations 41 geo synchronous 41 lander 41 wheeled rover 41 LightSail 1 41 Igor Mitrofanov 41 Gamma ray burst 41 robotic rover 41 Educator Astronauts 41 space shuttle Discovery 41 SpaceShip 41 Rick Linnehan 41 Biomedical Problems 41 Bernhard Fleck 41 Chandrayan 41 spokesman Robert Mirelson 41 inhabitable planets 41 unmanned Progress 41 Pam Melroy 41 spacesuits 41 avoidance maneuvers 41 cosmonaut Yuri Malenchenko 41 Shenzhou VII 41 Shenzhou VI spacecraft 41 orbiting ISS 41 Kibo module 41 Orlan MK 41 infrared telescopes 41 spacesuit gloves 41 rocketships 41 DEPTHX 41 frequent woo hoos 41 spaceplane 41 coastal Naro 41 planetary explorations 41 commander Frederick Sturckow 41 Interplanetary Internet 41 Soyuz capsules 41 Suni Williams 41 Bill Readdy NASA 41 Voyager spacecraft 41 William Readdy 41 Kloeris 41 don spacesuits 41 ballistic trajectory 41 Stardust capsule 41 PSLV C 41 invitees splashed 41 Diego Urbina 41 Shuttle astronauts 41 ASTRONAUTS 41 DIXI 41 Simonetta Di Pippo 41 NanTroSEIZE 41 station Sturckow radioed 41 Jupiter Saturn 41 Astronauts Robert Curbeam 41 Space Shuttle 41 Planetary Transits 41 Dyna Soar 41 heavier payloads 41 orbiting complex 41 NPO Lavochkin 41 Russian Yuri Lonchakov 41 GOES N 41 Simonetta Di Pipo 41 STS #L 41 Franco Bonacina 41 Donald Deke Slayton 41 Shuttle Discovery undocks 41 Leroy Chiao 41 indigenous cryogenic stage 41 Anatoly Perminov 41 celestial phenomena 41 explorers 41 shuttle liftoffs 41 G. Madhavan Nair 41 Johns Hopkins Applied Physics 41 astronaut 41 Shuttle Discovery 41 APXS 41 crewed missions 41 ARRL AMSAT 41 Astronaut Gregory Chamitoff 41 Nasa astronaut 41 dubbed taikonauts 41 Helios 2B 41 stage Naro rocket 41 planets atmospheres 41 Drew Feustel 41 Shuttle Endeavour blasts 41 Martian arctic plains 41 Lee Archambault 41 Cosmic Origins Spectrograph COS 41 Alexander Smoleyevsky 41 Taikonaut 41 William Gerstenmaier 41 irregularly shaped asteroid 41 spacecraft orbiting 41 EPOXI mission 41 Léopold Eyharts 41 Epoxi 41 Jean Jacques Dordain 41 cosmonaut 41 LightSail 41 Hayabusa probe 41 Spacewalker 41 Fantastic Four reunites 41 comet chaser 41 astronauts Nicole Stott 41 CryoSat satellite 41 origami masters 41 Mars 41 Lunar Module Pilot 41 Vega launcher 41 Japanese astronaut Takao 41 IceBridge 41 Venusian 41 shuttle astronauts 41 Berinstain 41 NASA rover Spirit 41 sols 41 THEMIS spacecraft 41 Rockot launch 41 MARSIS instrument 41 Shenzhou capsule 41 Rain overcast sky 41 robotic rover Spirit 41 spokesman Valery Lyndin 41 Observatory STEREO 41 flyby Cassini 41 Russian crewmate Yuri 41 Giove B 41 Chuck Dovale 41 Talisker Bounty Boat 41 Geeky tweeters 41 NASA twin rovers 41 Mars Reconnaissance Orbiter MRO 41 Allard Beutel NASA 41 twin rover Opportunity 41 Colin Pillinger 41 dockings 40 Venusians 40 spokesman Franco Bonacina 40 Pete Siebold 40 GLAST spacecraft 40 Mars CRISM 40 Atlantis rocketed 40 Kepler spacecraft 40 Owen Garriott 40 Solid Liquid Mixtures 40 Ares rocket 40 Samokutyaev 40 Vladimir Solovyov 40 Lieutenant Colonel Yang Liwei 40 Mars Color Imager 40 MARSIS 40 astronaut Leroy Chiao 40 Malenchenko 40 comets asteroids 40 Hubble Servicing 40 Soyuz spacecraft 40 extraterrestial 40 Greg Chamitoff 40 CDR Krikalev 40 Mars Surveyor 40 hardware Theisinger 40 Orion capsule 40 NASA THEMIS 40 Melroy 40 ESA Huygens 40 Weightless Wonder 40 Chandrayaan II 40 Russian crewmate Salizhan 40 manned Soyuz 40 shuttle Discovery undocks 40 NASA Kepler spacecraft 40 preset orbit 40 Garrett Reisman 40 Akatsuki engines 40 fairing separation 40 Flyaway foam remained 40 Roskosmos 40 Pete Nickolenko NASA 40 geostationary satellites 40 Undocking 40 Specialist Greg Chamitoff 40 NASA Kepler 40 Derek Hassmann 40 Roscosmos 40 Kounotori 40 ETs 40 engineer Sandra Magnus 40 Observatory SDO 40 thrusters 40 Hubble Space 40 NASA astronaut corps 40 Relations Observatory STEREO 40 Shuttle Discovery arrives 40 engineer Oleg Kotov 40 Edwin Aldrin 40 Mars Orbiter 40 Martian orbit 40 NASA EPOXI mission 40 Soyuz capsule 40 COROT 40 ESA astronaut 40 spacefaring civilization 40 Caldwell Dyson Skvortsov 40 Flight Engineer Salizhan 40 Hubble Space Telescope HST 40 buckypaper virtually 40 heliophysics 40 Hobaugh 40 GLONASS M 40 specialists Scott Parazynski 40 geosynchronous satellite launch 40 Hayabusa spacecraft 40 unmanned spacecraft 40 Commander Eileen 40 Japanese Aerospace Exploration 40 GSLV D3 40 gamma ray observatory 40 Rex Walheim 40 micrometeoroid debris shields 40 Planck spacecraft 40 Cosmonaut Valery Tokarev 40 Cosmonauts Day 40 Chandrayaan 40 Northrop Grumman Weightless Flights 40 cosmonaut Fyodor Yurchikhin 40 Dr Sheikh Muszaphar 40 Wally Schirra 40 microgravity environment 40 veteran spaceflyer 40 Brunschwyler 40 Climate Experiment GRACE 40 exoplanetary 40 Joel Sitz 40 Satoshi Furukawa 40 Endeavour astronaut 40 Liu Boming 40 experimental payloads 40 Shenzhou V spacecraft 40 THEMIS satellites 40 commander Dick Scobee 40 PSLV C# 40 Yurchikhin 40 orbiter lander 40 GLAST 40 manager Alan Thirkettle 40 commander Sergei Krikalev 40 astronaut Soichi Noguchi 40 scramjet engines 40 Sergei Ryazansky 40 Jean Pierre Lebreton 40 spaceflight participant 40 Churyumov Gerasimenko 40 Joel Sitz project 40 IBEX spacecraft 40 NASA Stratospheric Observatory 40 Spudis 40 comet Boethin 40 Thomas Marshburn 40 KazSat 40 Lockheed Martin A# geosynchronous 40 Royce Renfrew 40 DART spacecraft 40 Shuttle Atlantis 40 cosmonaut Boris Morukov 40 THEMIS mission 40 weather satellite TIROS 40 Cosmonaut 40 SSMEs 40 probe Huygens 40 Soyuz #S 40 Insat 4B 40 irradiated turkey 40 Roman Romanenko 40 Oleg Kononenko 40 spokesman Kiyotaka Yashiro 40 Infrared Astronomy 40 rover Sojourner 40 Fyodor Yurchikhin 40 director Pete Nickolenko 40 Cathy Koerner 40 Laurie Leshin 40 antisatellite weapon 40 gyroscopes 40 Lopez Alegria 40 Geosynchronous 40 spacewalking repairs 40 SMOS 40 Jean Luc Margot 40 BepiColombo joint 40 GOSAT 40 planets circling 40 Sun synchronous orbit 40 renowned astrophysics observatory 40 Alexey Sitev 40 nanosatellites 40 cosmonaut Salizhan Sharipov 40 CAIB recommendations 40 Discovery undocking 40 Robotic Exploration 40 Jupiter flyby 40 spaceborne 40 Cloutier Lemasters 40 MetOp satellite 40 TORU 40 durable twin rovers 40 Soyuz craft 40 Shuttle Atlantis docks 40 THEMIS Images 40 Russian cosmonaut Salizhan Sharipov 40 Soyuz Spacecraft 40 Astronaut Peggy Whitson 40 ammonia coolant pump 40 GSLV rocket 40 Glonass navigation satellites 40 Terminal Countdown Demonstration 40 chairman K. Radhakrishnan 40 satellites 40 cosmonaut Alexander Kaleri 40 retrorockets 40 NFIRE satellite 40 manager Kirk Shireman 40 BepiColombo mission 40 navigate autonomously 40 Svedhem 40 Astronaut Sunita Williams 40 Eutelsat KA SAT 40 Earthlike planets 40 magnetic spectrometer 40 cryogenic engines 40 Bill Gerstenmaier associate 40 TCDT 40 spacecraft Hayabusa 40 spacewalk Lopez Alegria 40 SpaceShip Two 40 Moonbase Alpha 40 remote sensing satellite Resourcesat 40 EELVs 40 Cosmonaut Mikhail Tyurin 40 fiery reentry 40 Galilean satellites 40 bedrock outcropping 40 Mamoru Mohri 40 Manyapu 40 ion propulsion engines 40 Gerhard Schwehm 40 wheeled rovers 40 Chang'e 40 Oliver Knickel 40 Glonass K 40 Express orbiter 40 ESA Planck 40 MetOp 40 Wang Zhaoyao