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(Click for frequent words.) 67 BepiColombo joint 66 orbital rendezvous 65 Jupiter Icy Moons 63 planetary missions 63 BepiColombo mission 63 lunar missions 62 Jupiter Icy Moons Orbiter 62 ExoMars rover 61 spacecrafts 61 ExoMars mission 61 unmanned probes 61 spacecraft 61 crewed spacecraft 60 Chandrayaan II 60 NuSTAR 59 manned missions 59 ion propulsion 59 circumlunar 59 lunar landers 59 Antenna LISA 59 uncrewed 59 Shenzhou spacecraft 59 manned lunar 59 manned spacecraft 59 Laser Interferometer Space 58 Phobos Grunt 58 Curiosity rover 58 deorbiting 58 shuttle Discovery STS 58 reusable spacecraft 58 LISA Pathfinder 58 Terrestrial Planet Finder 58 orbiting observatories 58 SELENE probe 58 BepiColombo 58 NASAs 58 NEOSSat 58 MetOp satellite 58 dexterous robot 58 crewed missions 58 interplanetary probes 57 Orbital Express 57 robotic explorers 57 LADEE 57 shuttle Endeavour STS 57 JIMO 57 SIM PlanetQuest 57 interplanetary spacecraft 57 Atlantis STS 57 orbital maneuvers 57 Crew Exploration 57 twin Voyager spacecraft 57 spokesman Michael Braukus 57 orbital insertion 57 Dyna Soar 57 heliophysics 57 manned lunar missions 56 VASIMR 56 ROCSAT 2 56 GPS IIF 56 SBSS satellite 56 Phobos Grunt mission 56 MARSIS radar 56 Launch Abort System 56 manned Soyuz 56 Space Shuttle 56 duration spaceflights 56 detect gravitational waves 56 Galileo satellites 56 manned lunar landing 56 planetary Transits 56 Soyuz TMA spacecraft 56 manned Shenzhou 56 NASA THEMIS 56 Philae lander 56 NFIRE 56 Cargo Launch Vehicle 56 Hubble Space Telescope HST 56 Shenzhou IV 56 Shenzhou VIII 56 Pluto Kuiper Belt 56 robotic landers 55 Martian rover 55 NAVSTAR Global Positioning System 55 Kliper 55 Laboratory MSL 55 OSIRIS REx 55 suborbital spacecraft 55 NASA 55 robotic spacecraft 55 Atlantis Undocks From 55 Churyumov Gerasimenko 55 unmanned spacecraft 55 Altair lunar lander 55 Mars orbiter 55 unmanned lunar orbiter 55 autonomous rendezvous 55 Minotaur rocket 55 Glonass K 55 probe Chang'e 55 NPO Lavochkin 55 enters lunar orbit 55 SIRTF 55 Jules Verne ATV 55 lunar exploration 55 Lunar Reconnaissance Orbiter LRO 55 orbiters 55 lunar explorer 55 SpaceX Dragon 54 Orion Crew 54 NASA rovers 54 Astrosat 54 Huygens mission 54 Mars landers 54 heavier payloads 54 planetary exploration 54 manned spaceships 54 scramjet engines 54 lunar orbiters 54 Yinghuo 1 54 TDRS satellites 54 Minotaur IV rocket 54 Launch Scrubbed 54 STSS Demo 54 orbiter 54 manned spaceship 54 scramjets 54 Huygens Probe 54 Foton spacecraft 54 Foton M2 54 AMPERE 54 GIOVE B 54 Sevastyanov 54 Jupiter flyby 54 KSLV 1 54 Nasa spacecraft 54 stabilizing gyroscopes 54 ferrying astronauts 54 RADARSAT 2 54 Interior Laboratory GRAIL 54 Astro E2 54 robotic rovers 54 Shenzhou orbital modules 54 spacecraft Chandrayaan 1 54 Cryosat 54 ISS resupply 54 geo stationary orbit 54 Express AM# 54 Chang'eI 54 OSIRIS Rex 54 satellite Kwangmyongsong 2 53 windshield wiper maneuver 53 spaceplane 53 Comet Churyumov Gerasimenko 53 Cygnus spacecraft 53 Giove B 53 NASA Kepler spacecraft 53 Shuttle Discovery undocks 53 manned spaceflight 53 Minotaur IV 53 LRO LCROSS 53 Orbiter LRO 53 Cosmic Vision 53 spacecraft SpaceShipTwo 53 space shuttle 53 Discovery STS 53 spaceborne 53 ARCTUS 53 DMSP F# 53 Voyager spacecraft 53 ExoMars 53 mission Chandrayaan 53 MUOS satellite 53 celestial observations 53 Pete Theisinger 53 Stratospheric Observatory 53 human spaceflight 53 Simonetta Di Pippo 53 Mars Atmosphere 53 microgravity experiments 53 meteorological satellites 53 orbiter lander 53 orbiting telescope 53 Carl Marchetto 53 asteroid deflection 53 Shuttle Endeavour blasts 53 GOCE satellite 53 spacefarers 53 IBEX spacecraft 53 Hubble Servicing 53 Jim Paulsen SSME 53 Ares Orion 53 deorbit burn 53 electric ion propulsion 53 lunar expeditions 53 Canadarms 53 unmanned lunar 53 unpiloted 52 Stephanie Stilson NASA 52 extravehicular activities 52 INSAT 3D 52 ATV Jules Verne 52 COROT 52 CHIPSat 52 Lee Joo jin 52 SpaceshipTwo 52 DragonLab 52 Orbital Space 52 director Chuck Dovale 52 Highly Adaptable Satellite 52 outer planets 52 spacemen Timothy Kopra 52 GSLV D3 rocket 52 Kepler Mission 52 Interplanetary Internet 52 hypersonic propulsion 52 Progress resupply 52 Ares IY 52 infrared telescopes 52 hypersonic flight 52 Glonass navigation satellites 52 Vehicle CEV 52 manned orbital 52 spaceflyers 52 Helios 2B 52 Nuclear Spectroscopic Telescope Array 52 Exploration Vehicle 52 Hubble servicing 52 geosynchronous satellites 52 GSAT 5P 52 Astrobotic 52 Orion CEV 52 Terrestrial Planet Finder TPF 52 Shuttle Atlantis docks 52 GLAST telescope 52 geo synchronous 52 SpaceLoft XL 52 Virgin Galactic unveils 52 Thales Alenia 52 Shuttle Atlantis blasts 52 TacSat 52 Foton M3 52 orbit insertion 52 Themis satellites 52 mineralogical mapping 52 geosynchronous 52 agency Roskosmos 52 Cassini Huygens 52 shuttle undocks 52 SBIRS GEO 52 AEHF satellite 52 Ares IX rocket 52 coastal Naro 52 Space Interferometry Mission 52 venerable Soyuz rocket 52 GOES N 52 Mars Pathfinder lander 52 SpaceShip Two 52 Orion LAS 52 Rosetta spacecraft 52 Infrared Astronomy SOFIA 52 orbit GEO 52 DART spacecraft 52 Shuttle Docks 52 WISE spacecraft 52 Shuttle Discovery blasts 52 Solar TErrestrial RElations Observatory 52 manned lunar mission 52 Mars Pathfinder 52 Globalstar satellites 52 KazSat 51 Mars rovers Spirit 51 Nasa 51 Alphasat 51 propulsion subsystem 51 robotic lander 51 Dordain 51 Interorbital Systems 51 Mars orbiting spacecraft 51 JAXA 51 nanosatellites 51 Mars Reconnaissance Orbiter MRO 51 EPOCh 51 HIAPER 51 mission Chandrayan 51 manager Mike Suffredini 51 comet chaser 51 Manned missions 51 Voyager probes 51 SpaceX Falcon 9 51 Mars Surveyor 51 Solar Sail 51 astrobiological 51 commander Dmitry Kondratyev 51 rover Opportunity 51 Opportunity rovers 51 P Churyumov Gerasimenko 51 orbital 51 remote sensing satellite Resourcesat 51 spaceflights 51 Shuttle Discovery 51 JWST 51 shuttle Atlantis STS 51 GOCE 51 Comet #P/Churyumov-Gerasimenko 51 suborbital spaceflight 51 Reusable Launch Vehicle 51 Mars moon Phobos 51 ExoMars Trace Gas 51 highly elliptical orbits 51 exobiology 51 COSMO SkyMed 51 Japanese Kibo laboratory 51 Cosmodrome 51 Shuttle undocks 51 Convection Rotation 51 Insat 4B 51 deorbit 51 Hayabusa spacecraft 51 sub orbital spaceflight 51 Solar Orbiter 51 Gravity Probe B 51 particle colliders 51 Atlantis undocks 51 Oceansat 2 51 Enceladus flybys 51 Europa Orbiter 51 Chuck Dovale 51 STEREO mission 51 SCISAT 51 Shenzhou VII 51 Xie Mingbao 51 THEMIS satellites 51 Shenzhou VI 51 shuttle Endeavor 51 Perminov 51 DIXI 51 Crew Launch Vehicle 51 Shuttle Endeavor 51 Simonetta Di Pippo ESA 51 NASA LCROSS 51 reboost 51 SMOS 51 Shuttle Endeavour undocks 51 spaceflight 51 orbiting observatory 51 hypersonic speeds 51 geosynchronous Earth 51 ADM Aeolus 51 Orion Ares 51 NASA Kepler 51 Soyuz manned spacecraft 51 atmospheric reentry 51 Foing 51 Kepler spacecraft 51 PSLV C9 51 Orion spacecraft 51 Galileo constellation 51 ST5 51 NASA STEREO 51 Hubble Space telescope 51 LCROSS mission 51 Shuttle Endeavour docks 51 lunar probes 51 STSS Demonstration 51 Apollo missions 51 Proba 2 51 Herschel Planck 51 orbiting gamma ray 51 Ariane launcher 51 GPS IIR M 51 STEREO spacecraft 51 Jeff Greason 51 Shenzhou spaceships 51 Planetary Transits 51 Helios 2A 51 GSLV rockets 50 nanosatellite 50 orbiters landers 50 planetary explorations 50 SpaceDev Dream Chaser 50 hypersonic missiles 50 Cape Canaveral Nasa 50 Cloud Aerosol Lidar 50 lunar spacecraft 50 Planck spacecraft 50 comet flyby 50 NASA Lunar Prospector 50 CubeSat 50 Pegasus XL 50 Jupiter icy moons 50 MARSIS 50 Observatory SDO 50 Observatory STEREO 50 O OREOS 50 LightSail 50 LSAM 50 Earth orbit LEO 50 JIMO mission 50 Scramjets 50 urine recycler 50 orbiting telescopes 50 JDEM 50 Infrared Astronomy 50 weather satellite TIROS 50 Earth orbiting satellites 50 Hubble gyroscopes 50 Bulava submarine launched 50 Ares rocket 50 polar orbits 50 LRO 50 Titan flyby 50 Orbiters 50 Shuttle Atlantis undocked 50 Geosynchronous 50 Multi Purpose Crew 50 Kounotori vehicle 50 Planck satellite 50 NPOESS Preparatory Project 50 X ray observatory 50 Fuk Li Mars 50 Martian rovers 50 Virgin Galactic SpaceShipTwo 50 Max Launch Abort 50 Saturnian moon Titan 50 Stardust spacecraft 50 CALIPSO 50 Mercury flyby 50 ESA Planck 50 Orbiter MRO 50 Akademik Fedorov 50 radio occultation 50 Shuttle Discovery docks 50 experimental payloads 50 Chandrayan 50 SSMEs 50 entered lunar orbit 50 Astronauts inspect 50 lunar orbiter 50 TDRS K 50 Orbiting Carbon Observatory OCO 50 SpaceLoft XL rocket 50 Venus Climate Orbiter 50 robotic rover 50 maneuvering thrusters 50 Deep Impact comet 50 ARISSat 50 Iridium NEXT 50 polar orbiting 50 INSAT satellite 50 A# spacecraft 50 spokesman Igor Panarin 50 starboard SARJ 50 Jupiter Ganymede 50 CX OLEV 50 resupply missions 50 Mars# 50 Martian lander 50 SumbandilaSat 50 Mars rovers Opportunity 50 NASA Gamma ray 50 shuttle 50 JTAC declared 50 Human Spaceflight 50 lunar landings 50 WhiteKnightTwo WK2 50 Rain overcast sky 50 GPS 2R 50 ICESCAPE 50 THEMIS mission 50 Sirangelo 50 RSRMs 50 radioisotope thermoelectric generator 50 STORRM 50 Orbital Taurus II 50 Glonass satellites 50 APXS 50 VIIRS 50 GSLV rocket 50 WGS satellite 50 Mirelson 50 NASA MESSENGER 50 Suborbital 50 Mark N. Sirangelo 50 Discovery undocks 50 New Horizons spacecraft 50 Mars rovers 50 YES2 50 MetOp 50 robotic probes 50 Decadal Survey 50 microshutters 50 Shenzhou V spacecraft 50 Rosetta comet chaser 50 NGATS 50 #P/Churyumov-Gerasimenko 50 Webb Telescope 50 H IIA 50 Fermi Telescope 50 LEOP 50 AJ# engine 50 Heidemarie M. 50 NASA rovers Spirit 50 Relative Navigation 50 closest flyby 49 Compton Gamma Ray 49 Eurostar E# 49 Deep Impact mission 49 SpaceX Dragon capsule 49 Shenzhou capsule 49 Advanced LIGO 49 Rokot 49 Beidou satellite 49 winged spacecraft 49 ESA Rosetta 49 entire Milstar constellation 49 Variable Specific 49 NM spaceport 49 hypersonic scramjet 49 Relations Observatory STEREO 49 Magnetospheric 49 Deep Impact eXtended Investigation 49 WGS satellites 49 navigate autonomously 49 Environment Explorer LADEE 49 Kepler 9c 49 aerobraking 49 shuttle missions 49 GPS IIIA satellite 49 manager Gerhard Schwehm 49 Centre VSSC 49 SSM# 49 Servicing Mission 49 astrophysical phenomena 49 Mars Climate Sounder 49 Cape Canaveral FL AHN 49 geosynchronous satellite launch 49 Rosetta orbiter 49 Mars unfeasible 49 Saturn Cassini 49 Permanent Multipurpose Module PMM 49 malfunctioning firefighting 49 Rosetta lander 49 EELVs 49 Herschel Space Telescope 49 GLAST 49 SpaceShipTwo SS2 49 System F6 49 spacecraft orbited 49 Continuity Mission LDCM 49 Atacama Large Millimeter submillimeter 49 LCROSS spacecraft 49 GLONASS constellation 49 Shenzhou manned 49 unmanned Progress 49 fiery reentry 49 ESA GOCE 49 microgravity environment 49 Infrared Pathfinder Satellite 49 ASTRA 1KR 49 Climate Experiment GRACE 49 cosmonautics 49 SSETI Express 49 cryocooler 49 NASA Stratospheric Observatory 49 Launch Postponed 49 lander 49 Sun synchronous orbit 49 GLONASS satellites 49 Solid Rocket Boosters 49 lunar rovers 49 Sample Return 49 Wolszczan 49 AIRSS 49 ion thrusters 49 Plesetsk 49 Mike Leinbach shuttle 49 Shenzhou VII mission 49 Luan Enjie 49 lunar lander 49 Yuri Koptev 49 Atlas 2AS 49 fairing separation 49 Stratellite 49 spaceliner 49 C NOFS 49 spacecraft Hayabusa 49 SPHERES 49 comet #P/Churyumov-Gerasimenko 49 Ariane rocket 49 airborne observatory 49 Salyut 49 Mars Polar Lander 49 Vinasat 49 visit http:/saturn.jpl.nasa.gov 49 drogue parachute 49 Kepler observatory 49 high altitude airship 49 rovers 49 HEO payload 49 GOSAT 49 decadal survey 49 lunar landing 49 gamma ray observatory 49 Vitaly Davydov deputy 49 habitable worlds 49 manned lunar voyage 49 Gamma ray Large 49 Orbit Validation IOV 49 bedrock outcropping 49 Simonetta Di Pipo 49 space shuttles 49 Shenzhou V 49 Sun Laiyan 49 Lunar CRater Observation 49 Geeky tweeters 49 Comet Hartley 2 49 robotic explorer 49 David Southwood ESA 49 shuttle orbiter 49 spacewalk paves 49 Oceansat 49 Kiruna Sweden 49 unmanned Shenzhou 49 Human Spaceflight Microgravity 49 International Space Station 49 Aeronomy 49 FASTSAT 49 spaceward 49 astronauts Jing Haipeng 49 Rosaviakosmos 49 Discovery undocking 49 Daniel Sacotte 49 Turksat 4A 49 ISRO 49 Global Precipitation Measurement 49 LightSail 1 49 GSLV Mk III 49 PSLV rocket 49 #/#-ton truss 49 Commander Rick Sturckow 49 orbital maneuvering 49 Epoxi 49 Robotic Exploration 49 situ measurements 49 NanoSail D 49 Eyharts 49 Taikonauts 49 Insat 4C 49 Rockot launch 49 Mars 49 Sojourner rover 49 commander Leroy Chiao 49 NROL 49 SMOS Soil Moisture 49 lunar orbits 49 Lopota 49 equatorial orbit 49 orbiting spacecraft 49 NASA Cosmic Background 49 Ariane launchers 49 KSC Visitor Complex 49 payloads 49 ASTRA 1L 49 Thermal Emission Spectrometer 48 satID 48 Flyby spacecraft 48 Earth Observation EO 48 Visit SPACE.com 48 unstowed 48 Wideband Global 48 ESA Integral 48 DigitalGlobe WorldView 48 lunar perigee 48 ICESat 48 NASA twin STEREO 48 Earth orbit 48 planets orbiting distant 48 countdown dress rehearsal 48 highly elliptical orbit 48 Vega launcher 48 SpaceX Falcon 48 Pete Siebold 48 Eutelsat KA SAT 48 unmanned airships 48 remote sensing satellites 48 Cubesat 48 Boeing B# Dreamliner 48 GeneSat 48 Taurus XL 48 Soyuz rockets 48 Ron Grabe Orbital 48 Geo IK 48 Isro 48 heaviest payloads 48 Space Telescope GLAST 48 X#B 48 ferry SpaceShipTwo 48 duration spaceflight 48 Léopold Eyharts 48 thruster 48 Astrium Eurostar 48 Mike Cerneck 48 Huygens descent 48 Launch Vehicle 48 hypervelocity 48 Jovian moons 48 Recovery Experiment SRE 48 Endeavour STS 48 Dream Chaser 48 AERONET 48 Solar Dynamics Observatory 48 indigenous cryogenic 48 Alphabus 48 Chairman G Madhavan 48 Soyuz TMA #M 48 hypersonic 48 endurance UAV 48 Nimiq 5 48 Landing Facility 48 Reaches Orbit 48 DubaiSat 1 48 polar orbiting satellites 48 delayed orbiter SELENE 48 Security GMES 48 astronauts 48 Roskosmos 48 NCADE 48 RISAT 48 MPCV 48 Esrange 48 Pilot George Zamka 48 Landsat Data 48 engineer Timothy Kopra 48 Dan Durda 48 Weightless Wonder 48 Japan Kibo laboratory 48 asteroid Vesta 48 pressurized compartment 48 Mars Color Imager 48 Jean Pierre Lebreton Huygens 48 swingby 48 astronomical telescope 48 Lunar Rover 48 EPOXI mission 48 Hubble 48 suborbital spaceflights 48 John Callas rover 48 carry heavier payloads 48 Shuttle Discovery arrives 48 Manned Spaceflight 48 occultations 48 GPS Block IIF 48 rovers Spirit 48 lunar outpost 48 unpowered glider 48 Discovery liftoff 48 Hubble Space Telescope 48 Ronald Dittemore 48 GSLV D3 48 concentrating photovoltaics 48 Mars Orbiter 48 Pirs Docking Compartment airlock 48 asteroids Ceres 48 maritime subsurface 48 pressurized module 48 Ryschkewitsch 48 EarthCARE 48 Roddenberrys remains 48 ATV Johannes Kepler 48 space module Tiangong 48 NASA Kepler telescope 48 Resourcesat 2 48 Anatoly Perminov 48 exoplanets planets 48 Transformational Satellite Communications 48 Allard Beutel NASA 48 narrowband tactical 48 unmanned rover 48 GLAST spacecraft 48 INSAT 4B 48 Japanese Aerospace Exploration 48 NASA Wallops 48 Greenbelt Md. manages 48 Soyuz launcher 48 astrometric 48 LUNAR 48 Interstellar Boundary Explorer 48 GPS IIIA 48 commander Sergei Volkov 48 Sinosat 48 Commander Dominic Gorie 48 Plane OSP 48 GeneSat 1 48 Cosmonaut Yuri Gagarin 48 cosmological observations 48 Hayabusa probe 48 Kepler Space Telescope 48 CubeSats 48 Lunar Exploration 48 Fincke radioed 48 commander Charlie Hobaugh 48 Kibo module 48 Baikonour Cosmodrome 48 LeRoy Cain shuttle 48 Permanent Multipurpose Module 48 planemos 48 Redu Belgium 48 Jaxa 48 geosynchronous satellite 48 twin rover Opportunity 48 journal Acta Astronautica 48 gaseous nitrogen 48 extrasolar planetary systems 48 flea hop 48 Qi Faren 48 chairman K. Radhakrishnan 48 Aerojet propulsion 48 PASADENA Calif. NASA 48 Satish Dhawan 48 Ares IX 48 Ocean Salinity 48 Andrey Borisenko 48 Fomalhaut b 48 Mars Lander 48 Hubble orbits 48 Gerhard Schwehm 47 William Readdy NASA 47 Kepler Telescope 47 NASA Stardust spacecraft 47 Herschel Space 47 Ulysses spacecraft 47 RKK Energia 47 CryoSat satellite 47 Oefelein piloted 47 Mars lander 47 SMOS mission 47 Fermi Gamma ray 47 Crew Prepares 47 robotic Canadarm 47 NASA rover Spirit 47 reentries 47 TDRSS 47 STP S# 47 VASIMR engine 47 CBERS 2B 47 Globalstar constellation 47 shuttle orbiters 47 orbital spaceflight 47 laser altimeter 47 Shuttle Atlantis undocks 47 INSAT satellites 47 Synthetic Aperture Radar 47 Pirs module 47 MARSIS instrument 47 Operationally Responsive Space 47 orbiting Hubble Space Telescope 47 preset orbit 47 Dnepr rocket 47 TanDEM X 47 Fermi telescope 47 William Gerstenmaier 47 OGLE TR #b 47 lander rover 47 reentry capsule 47 Itokawa asteroid 47 Liquid Apogee Motor 47 SMEX 47 infrared astronomy 47 unpiloted aircraft 47 SpaceShip One 47 Shuttle Endeavour 47 lunar probe Chang'e 47 Lunar Module Pilot 47 GOES O 47 Poisk 47 mere fly bys 47 AEHF 47 Undocking 47 Kazakhstan Baikonur Cosmodrome 47 XMM Newton X ray 47 MirCorp 47 Block IIF 47 director Charles Elachi 47 Virgin Galactic VSS Enterprise 47 Tiangong 1 47 Automated Transfer Vehicle 47 Space Station 47 Thirty Meter Telescope 47 Spaceway F1 47 NEOWISE 47 Ed Weiler NASA 47 Satellite Launch Vehicle 47 particle physics detector 47 Orion capsule 47 INSAT 4CR 47 journal Meteoritics 47 interplanetary 47 Cosmonautics Day 47 infrared observatory 47 MAVEN 47 Origins Spectral Interpretation 47 Orbital Module 47 lunar orbiter Chandrayaan 47 X ray telescopes 47 alien civilizations 47 orbiting 47 dimensional atlas 47 Vostok spacecraft 47 E'Prime 47 Iridium NEXT satellites 47 Kazakhstan Baikonur 47 geostationary orbits 47 Viking landers 47 SM4 47 HiRISE camera aboard 47 Soyuz 47 Ranging spacecraft 47 Shepherding Spacecraft 47 H IIB 47 Research Organisation Isro 47 Cartosat 2A 47 flyby spacecraft 47 GPS IIIB 47 comets asteroids 47 Daniel Sacotte ESA 47 Itokawa 47 Shenzhou VI craft 47 SELENE 47 SuitSat 47 Space Shuttle Discovery 47 LiftPort Space Elevator 47 gamma ray observatories 47 Scramjet 47 cosmonaut Fyodor Yurchikhin 47 module Kibo 47 planetary rovers 47 observing satellites 47 Yarkovsky effect 47 Kazakhstan Baikonur cosmodrome 47 D CIXS 47 von Weyhe 47 Cassini Equinox 47 Spaceguard 47 MoonLITE 47 flybys 47 Glonass M 47 Titan Saturn 47 Skynet 5C 47 X #B 47 Gedmark 47 Martian moons 47 ramjet scramjet 47 Sensing Satellite LCROSS 47 Mars Descent Imager 47 sols 47 Orbital Debris 47 SBSP 47 PSLV C# 47 reusable hypersonic 47 Joel Sitz 47 CAPE CANAVERAL Astronauts 47 exoplanetary 47 Astronauts Install 47 ESA Herschel 47 Igor Mitrofanov 47 Fregat upper stage 47 X ray Telescope XRT 47 origami masters 47 Horizons spacecraft 47 Ares I. 47 GEO satellites 47 propulsion 47 ultraviolet spectrograph 47 Polar Lander 47 particle physics experiments 47 Dominic Gorie 47 lidar instrument 47 Satellite Launch 47 Eurobot 47 Baikonur spaceport 47 Baikonour 47 Earthlike planets 47 P#/P# truss 47 Orbiter 47 specialists Scott Parazynski 47 inhabitable planets 47 HAMSAT 47 E ELT 47 manned spacecraft Shenzhou VI 47 NASA Lunar Crater 47 Spirit Mars rover 47 JCSAT 9 47 winged spaceships 47 parachutes malfunctioned 47 Boeing #-# freighter 47 MidSTAR 47 Oleg Ivanovsky 47 Shuttle docks