Related by context. Frequent words. (Click for all words.) 75 Spacewalking astronauts 61 Two spacewalking astronauts 58 Astronauts aboard 56 Astronauts 56 Andrew Feustel 55 Spacewalkers 54 Richard Linnehan 54 Shuttle astronauts 54 orbiting astronauts 53 Endeavour astronauts 52 commander George Zamka 52 commander Peggy Whitson 52 Dan Tani 52 Tim Kopra 51 Discovery astronauts 51 Rex Walheim 51 Zamka 51 spacewalking partner 51 shuttle payload bay 51 John Grunsfeld 50 Robert Behnken 50 spacewalk 50 spacewalking astronauts 50 Heidemarie Stefanyshyn Piper 50 orbiting complex 50 Discovery payload bay 50 Mission Specialists 49 6 #/#-hour spacewalk 49 space shuttle Discovery 49 Tracy Caldwell Dyson 49 International Space Station 49 Frank De Winne 49 director Tony Ceccacci 49 Japanese astronaut Soichi 49 astronauts 48 Rick Mastracchio 48 Oleg Kononenko 48 Oleg Skripochka 48 spacewalkers 48 shuttle Atlantis 48 Alexander Kaleri 48 orbital module 48 Greg Chamitoff 48 Sandra Magnus 48 Shane Kimbrough 48 Sturckow 48 Commander Peggy Whitson 48 spacewalks 48 aboard Endeavour 48 Space Shuttle Endeavour 48 Stefanyshyn Piper 47 Atlantis astronauts 47 shuttle Discovery 47 Mike Fincke 47 spacewalking astronaut 47 Julie Payette 47 Ares IX rocket 46 Space shuttle Discovery 46 orbiting outpost 46 Harmony module 46 Space shuttle Atlantis 46 Lee Archambault 46 Launch Pad #B 46 commander Rick Sturckow 46 Commander Eileen 46 Doug Wheelock 46 shuttle astronauts 46 shuttle Endeavour 46 spacewalker 46 Shuttle Discovery 46 PASADENA Calif. NASA 46 Koichi Wakata 46 ammonia tank 46 Discovery STS 46 Nie Haisheng 46 astronaut Peggy Whitson 45 Yurchikhin 45 Soyuz capsule carrying 45 interplanetary spacecraft 45 Dorothy Metcalf Lindenburger 45 generating solar arrays 45 Leland Melvin 45 Mikhail Kornienko 45 ISS Expedition 45 shuttle robotic arm 45 Mikhail Tyurin 45 shuttle thermal tiles 45 spacewalking 45 Piers Sellers 45 Scott Parazynski 45 Space Shuttle Atlantis 45 Mark Polansky 45 Lopez Alegria 45 Hoshide 44 CAPE CANAVERAL FL 44 Baikonur Kazakhstan 44 orbiting laboratory 44 astronaut Leopold Eyharts 44 orbiting observatory 44 Fyodor Yurchikhin 44 Alan Poindexter