Related by context. Frequent words. (Click for all words.) 46 Spacewalkers 42 Spacewalking astronauts 41 spacewalk 40 shuttle Atlantis 40 Spacewalk 39 thruster 39 fail 39 liftoff 39 Yurchikhin 38 Astronauts 38 Mission Specialists 37 spacewalker 36 NASA 36 International Space Station 36 orbiter 36 pressurization 36 Endeavour astronauts 36 Kaleri 36 Suffredini 36 spacewalks 35 Gerstenmaier 35 Discovery astronauts 35 shuttle Endeavour 35 spacesuit 35 Atlantis astronauts 35 spacecraft 35 Mike Suffredini 35 space shuttle Discovery 34 Failure 34 malfunctioning 34 blastoff 34 failure 34 John Grunsfeld 34 overheat 34 Padalka 34 Curbeam 33 astronaut 33 Fincke 33 NASA astronaut 33 malfunction 33 Andrew Feustel 33 Space Shuttle Endeavour 33 malfunctioned 33 undock 33 spacewalking astronauts 33 Nasa 33 Lopez Alegria 32 Melroy 32 orbital outpost 32 Caldwell Dyson 32 Shuttle Atlantis 32 Fuglesang 32 spacewalkers 32 malfunctions 32 Space Shuttle Discovery 32 rocket boosters 32 Stefanyshyn Piper 32 spacemen 32 astronauts 32 Malenchenko 32 Failing 32 space shuttle Atlantis 32 ammonia coolant 32 airlock 32 Krikalev 31 space shuttle Endeavour 31 Nicole Stott 31 condensation 31 undocking 31 Douglas Wheelock 31 shuttle 31 Chamitoff 31 Lee Archambault 31 Shuttle Launch 31 heat shield 31 failed 31 space shuttle 31 Failed 31 thrust reversers 31 Space Shuttle Atlantis 31 Readdy 31 orbiting 31 Endeavour 31 Soichi Noguchi 31 Shuttle Endeavour 31 orbiting outpost 31 ammonia tank 31 JAXA 31 spacesuits 31 shuttle astronauts 30 orbiting complex 30 Tracy Caldwell Dyson 30 orbit 30 Mission Control 30 defroster 30 shuttle Discovery 30 Shuttle commander 30 solar arrays 30 spokesman Allard Beutel 30 aborts 30 Mike Fincke