Related by context. Frequent words. (Click for all words.) 60 spacewalk 60 Behnken 59 spacewalkers 57 Endeavour astronauts 56 Discovery astronauts 56 spacewalks 55 International Space Station 55 spacewalking astronauts 54 spacewalker 53 Atlantis astronauts 52 shuttle Discovery 52 spacewalking 52 aboard Endeavour 52 Tracy Caldwell Dyson 52 Fincke 52 Astronauts 51 astronauts 51 shuttle astronauts 51 shuttle Endeavour 50 shuttle Atlantis 50 space shuttle Discovery 50 Parazynski 50 shuttle robotic arm 50 Curbeam 50 Mike Fincke 50 Mastracchio 49 Foale 49 Space Shuttle Atlantis 49 Grunsfeld 48 Shuttle Discovery 48 Yurchikhin 48 Space Shuttle Discovery 48 Malenchenko 48 Space shuttle Atlantis 48 Flight Engineer 48 Garan 48 orbiting laboratory 47 space shuttle Endeavour 47 Space Station 47 John Grunsfeld 47 Space Shuttle Endeavour 46 robotic arm 46 spacesuits 46 crewmates 46 payload bay 46 Shuttle Atlantis 46 orbital outpost 46 astronaut 45 Space shuttle Endeavour 45 Suffredini 45 Lopez Alegria 45 Chamitoff 45 Fossum 45 Gerstenmaier 45 Padalka 45 undock 45 orbiting lab 45 Dextre 45 orbiting outpost 44 Wakata 44 Hubble Space Telescope 44 Kibo 44 Shuttle Endeavour 44 Spacewalk 44 ammonia tank 43 undocking 43 Melroy 43 NASA 43 Soyuz TMA 43 Mark Polansky 43 Space Agency 43 Baikonur cosmodrome 43 astronauts aboard 42 Space shuttle Discovery 42 NASA astronaut 42 ISS 42 STS 42 Feustel 42 space shuttle Atlantis 42 Oleg Kotov 42 airlock 42 Nespoli 42 Wheelock 42 Russian Soyuz capsule 42 Mission Control 42 blastoff 41 spacesuit 41 Bresnik 41 shuttle missions 41 Olivas 41 Ares IX 41 Chiao 41 shuttle 41 Astronaut 41 Tani 41 By Irene Klotz 41 Endeavour 41 Cape Canaveral Air Force 41 Russian Soyuz spacecraft 41 Baikonur Cosmodrome 41 orbiter