Related by context. Frequent words. (Click for all words.) 54 Mike Suffredini 51 Bill Gerstenmaier NASA 51 Gregory Chamitoff 50 Space Agency 50 commander Peggy Whitson 48 Bill Gerstenmaier 47 aboard Endeavour 46 Nicole Stott 46 International Space Station 45 shuttle Atlantis 45 Wakata 44 Anatoly Perminov 44 orbiting 44 payload bay 44 Kibo 44 spokesman Allard Beutel 44 Mike Fincke 44 human spaceflight 44 Hoshide 44 Michael Foale 43 Readdy 43 shuttle Endeavour 43 LeRoy Cain 42 manned missions 42 space shuttle 42 Sputnik 42 manned spaceflight 42 Suffredini 42 orbiting complex 42 Space Shuttle Discovery 42 Chamitoff 41 Shuttle Discovery 41 lunar exploration 41 Astrium 41 shuttle Discovery 41 spaceflight 41 orbiting laboratory 41 Soyuz 41 lunar orbiter 41 Gerstenmaier 41 Nasa 41 Shuttle Endeavour 41 Soyuz rocket 40 JAXA 40 Garrett Reisman 40 space shuttle Discovery 40 Foale 40 Daniel Tani 40 shuttle fleet 40 Endeavour astronauts 40 spacewalk 40 Alpha Magnetic Spectrometer 40 Ares IX 40 spacewalks 40 orbiting outpost 40 Astronauts aboard 40 spacecraft 39 commander Rick Sturckow 39 Robonaut 2 39 Discovery astronauts 39 PSLV 39 Yuri Gagarin 39 Russian Soyuz spacecraft 39 named Kibo 39 LCROSS 39 Hobaugh 39 Tracy Caldwell Dyson 39 Douglas Wheelock 39 cosmonauts 39 Space Shuttle 39 GOCE 39 NASA 39 manned spacecraft 39 LeRoy Cain chairman 39 astronaut 39 Shenzhou VI 39 spacewalking 39 Stefanyshyn Piper 39 Fuglesang 38 Perminov 38 cosmonaut 38 Mission Control 38 lunar probe 38 Russian Soyuz rocket 38 shuttle 38 Rick Mastracchio 38 orbiter 38 Russian Soyuz 38 director Mike Leinbach 38 lunar landing 38 Baikonur Cosmodrome 38 astronauts 38 orbit 38 Japan Aerospace Exploration 38 lunar missions 38 Mark Polansky 38 shuttle missions 38 Padalka 38 Roskosmos 38 Ares rocket 38 Sandra Magnus