Related by context. Frequent words. (Click for all words.) 60 Spacewalking astronauts 58 truss segment 58 orbiting outpost 56 orbiting complex 56 spacewalking astronauts 55 orbital outpost 55 spacewalk 54 spacewalks 54 Spacewalkers 54 Discovery astronauts 54 Alpha Magnetic Spectrometer 54 shuttle Atlantis 54 International Space Station 54 ammonia coolant 53 solar arrays 53 spacewalkers 53 shuttle Endeavour 53 space shuttle Endeavour 53 Endeavour astronauts 53 ammonia tank 52 space shuttle Atlantis 52 shuttle astronauts 52 payload bay 51 orbiting laboratory 51 named Kibo 51 aboard Endeavour 51 orbiting lab 51 Shuttle Discovery 51 Atlantis astronauts 50 Shuttle Endeavour 50 Tracy Caldwell Dyson 50 shuttle Discovery 50 astronauts aboard 49 Kibo 49 astronauts 49 space shuttle Discovery 49 Astronauts aboard 49 spacewalking 49 Space shuttle Discovery 48 Yurchikhin 48 Astronauts 48 Soyuz TMA 48 Space Shuttle Atlantis 48 Soyuz capsule 47 shuttle robotic arm 47 Soyuz rocket 46 Dextre 46 Space shuttle Endeavour 46 Orion spacecraft 46 commander Peggy Whitson 46 Fuglesang 46 Christer Fuglesang 46 Stefanyshyn Piper 46 Space shuttle Atlantis 46 spacecraft 45 Russian cosmonaut 44 Lopez Alegria 44 Andrew Feustel 44 Daniel Tani 44 Rick Mastracchio 44 Nicole Stott 44 Russian Soyuz capsule 44 robotic arm 44 Russian Soyuz spacecraft 44 Parazynski 44 Shuttle Atlantis 44 Orion capsule 44 rotary joint 44 orbiting 44 Caldwell Dyson 44 John Grunsfeld 44 docking port 44 solid rocket boosters 43 Wakata 43 spacesuits 43 Space Shuttle Endeavour 43 Malenchenko 43 gyroscopes 43 gyroscope 43 Krikalev 43 Mike Suffredini 42 crewmates 42 shuttle missions 42 undock 42 Atlantis 42 Space Station 42 Danny Olivas 42 Soyuz spacecraft 42 Curbeam 42 Sunita Williams 41 Mission Specialists 41 BAIKONUR Kazakhstan 41 gap fillers 41 Sandra Magnus 41 Russian Soyuz rocket 41 Doug Wheelock 41 truss 41 spacesuit 41 Fincke 41 CAPE CANAVERAL Fla. 41 Walheim