Related by context. Frequent words. (Click for all words.) 58 Mark Polansky 53 John Grunsfeld 52 space shuttle Discovery 52 International Space Station 51 shuttle Atlantis 50 Eileen Collins 50 crewmates 49 Fincke 49 Space Shuttle Atlantis 49 shuttle Endeavour 48 Space Station 48 Shuttle Atlantis 47 Shuttle Discovery 47 Space Shuttle Discovery 47 Space Shuttle Endeavour 47 space shuttle Endeavour 46 Michael Lopez Alegria 46 shuttle Discovery 46 Mike Fincke 46 Grunsfeld 46 Atlantis 46 orbital outpost 46 space shuttle Atlantis 46 Space Agency 46 Mission Control 45 space shuttle 45 orbiting laboratory 45 Discovery astronauts 45 Shuttle Endeavour 45 astronauts 45 astronaut 44 spacewalking astronauts 44 director Mike Leinbach 44 shuttle astronauts 44 spacewalk 44 orbiter 44 aboard Endeavour 44 Cape Canaveral Fla. 43 orbiting outpost 43 spacecraft 43 Wakata 43 Chamitoff 42 Astronaut 42 astronauts aboard 42 spacewalkers 42 Polansky 42 Space shuttle Discovery 42 Lopez Alegria 42 LeRoy Cain 42 Spacewalk 42 liftoff 42 Rick Husband 42 Tyurin 42 Thomas Reiter 42 NASA 41 NASA astronaut 41 robotic arm 41 Endeavour astronauts 41 payload bay 41 Soyuz TMA 41 Mastracchio 41 Soyuz capsule 41 Foale 41 Endeavour 41 Parazynski 41 Feustel 41 shuttle robotic arm 40 spacewalks 40 Atlantis astronauts 40 shuttle 40 STS 40 Huygens 40 Tracy Caldwell Dyson 40 lander 40 Nespoli 40 Astronauts 40 spaceship 40 Padalka 40 Sunita Williams 40 CAPE CANAVERAL 40 Gerstenmaier 40 spacewalker 40 Russian cosmonaut 40 Malenchenko 40 shuttle missions 40 Curbeam 39 Kibo 39 spacewalking 39 Perminov 39 Hubble telescope 39 Space shuttle Atlantis 39 Soyuz 39 Oleg Kotov 39 Chandrayaan 39 Melroy 39 Russian Soyuz spacecraft 39 undock 39 Suffredini 39 Nasa 39 cosmonauts 39 ISS