Related by context. Frequent words. (Click for all words.) 53 Scott Parazynski 53 Shuttle astronauts 51 Oleg Kononenko 51 Parazynski 50 Tim Kopra 48 space shuttle Discovery 48 Dan Tani 48 shuttle Atlantis 47 Shuttle Discovery 47 commander Rick Sturckow 46 Spacewalking astronauts 46 Shuttle Endeavour 46 Robert Satcher 45 shuttle Discovery 45 Ares IX rocket 45 Astronauts aboard 45 International Space Station 45 commander George Zamka 45 spacewalking astronaut 45 Discovery STS 45 Julie Payette 45 Space Shuttle Endeavour 45 space shuttle Endeavour 45 Space shuttle Discovery 45 Spacewalkers 45 Space Shuttle Discovery 44 Astronauts 44 Eric Boe 44 unmanned spacecraft 44 Alexander Kaleri 44 Lee Archambault 44 aboard Endeavour 44 Baikonur Kazakhstan 44 Shuttle Atlantis 44 orbiting complex 43 Greg Chamitoff 43 John Grunsfeld 43 Discovery astronauts 43 robotic spacecraft 43 astronauts 43 space shuttle Atlantis 43 space shuttle 43 Oleg Skripochka 43 Ariane rocket 43 Piers Sellers 43 Two spacewalking astronauts 43 PASADENA Calif. NASA 43 Koichi Wakata 42 Mark Polansky 42 shuttle thermal tiles 42 Stephen Frick 42 NASA astronaut corps 42 Andrew Feustel 42 shuttle underside 42 Space Shuttle Atlantis 42 shuttle Endeavour 42 micrometeorite damage 42 Commander Eileen 42 rover Opportunity 42 astronaut Peggy Whitson 42 spaceship 42 shuttle 42 Atlantis astronauts 42 Heidemarie Stefanyshyn Piper 42 Rex Walheim 42 Endeavour 42 pad #A 42 Mike Fincke 42 Grunsfeld 42 Eyharts 42 orbiter 42 Spirit rover 42 Hubble servicing 42 Discovery payload bay 41 shuttle Challenger 41 administrator Sean O'Keefe 41 Nasa 41 Lyndin 41 Bob Thirsk 41 Leland Melvin 41 astronaut Julie Payette 41 Mikhail Kornienko 41 Christer Fuglesang 41 Gregory Chamitoff 41 Harmony module 41 Nie Haisheng 41 Shuttle Launch 41 Zamka 41 Sheikh Muszaphar 41 Leroy Chiao 41 Soyuz capsule carrying 41 Rick Mastracchio 41 Alan Poindexter 41 spacecraft 41 orbiting lab 41 Mission Control 40 NASA 40 CAPE CANAVERAL Fla. 40 Shane Kimbrough 40 Shenzhou VII 40 shuttle astronauts