Related by context. Frequent words. (Click for all words.) 66 John Grunsfeld 57 Grunsfeld 55 Tracy Caldwell Dyson 54 commander Rick Sturckow 54 spacewalk 54 shuttle Atlantis 53 Feustel 53 spacewalkers 53 Yurchikhin 53 Discovery astronauts 53 Mike Fincke 52 spacewalking astronauts 52 Curbeam 52 Astronauts 52 Stefanyshyn Piper 51 Fincke 51 spacewalks 50 spacewalking 50 Fuglesang 50 spacewalker 50 Mastracchio 50 Endeavour astronauts 50 spacesuits 50 Daniel Tani 49 Padalka 49 shuttle astronauts 49 NASA astronaut 49 astronaut 49 space shuttle Discovery 49 International Space Station 49 Parazynski 49 Mark Polansky 48 ammonia tank 48 Sunita Williams 48 astronauts 48 Atlantis astronauts 47 Wakata 47 Chamitoff 47 Flight Engineer 47 Lopez Alegria 47 shuttle Discovery 47 Space Shuttle Endeavour 47 Fossum 46 Soichi Noguchi 46 shuttle Endeavour 46 Hobaugh 45 Oleg Kotov 45 Space Shuttle Discovery 45 Garan 45 Space Shuttle Atlantis 45 Hubble Space Telescope 45 Michael Lopez Alegria 45 Soyuz capsule 45 spacesuit 45 Shuttle Atlantis 44 Astronaut 44 orbiter 44 space shuttle Endeavour 44 Space Agency 44 Shuttle commander 44 space shuttle Atlantis 44 Shuttle Discovery 44 orbiting laboratory 44 cosmonaut 44 crewmates 44 undocking 44 orbiting outpost 44 KENNEDY SPACE CENTER 43 Russian cosmonauts 43 aboard Endeavour 43 Kopra 43 NASA 43 Hubble 43 Shuttle Endeavour 43 spacemen 43 heat shield 43 Foale 43 thermal tile 43 Malenchenko 43 Spacewalk 42 spacecraft 42 Suffredini 42 Melroy 42 Tyurin 42 Russian cosmonaut 42 undock 42 Thomas Reiter 42 shuttle missions 42 Soyuz TMA 42 Space shuttle Discovery 42 orbiting lab 42 Space shuttle Atlantis 42 airlock 41 Mars rover 41 Mission Control 41 orbital debris 41 lunar module 41 Endeavour 41 Russian Soyuz rocket 41 Nespoli 41 Hubble telescope