Related by context. Frequent words. (Click for all words.) 68 Astronauts 68 Discovery astronauts 65 Spacewalkers 63 shuttle astronauts 63 astronauts 62 space shuttle Discovery 62 spacewalk 61 Space Shuttle Endeavour 61 Shuttle Discovery 60 Spacewalking astronauts 60 Space Shuttle Atlantis 60 Endeavour astronauts 60 shuttle Discovery 60 International Space Station 60 Atlantis astronauts 59 space shuttle 59 shuttle Atlantis 59 space shuttle Endeavour 59 Space Shuttle Discovery 59 Shuttle Atlantis 58 Shuttle Endeavour 58 Space shuttle Discovery 58 space shuttle Atlantis 58 orbiter 57 Space shuttle Atlantis 57 spacewalkers 57 shuttle 56 shuttle Endeavour 56 Nicole Stott 56 spacecraft 55 aboard Endeavour 55 Caldwell Dyson 55 Mission Specialists 55 orbiting complex 55 Yurchikhin 54 spacewalks 54 NASA 54 Space shuttle Endeavour 54 Tracy Caldwell Dyson 54 Spacewalk 54 Andrew Feustel 54 Flight Engineer 54 Endeavour 54 astronauts aboard 53 astronaut 53 undocking 53 orbiting outpost 52 Nasa 52 Space Station 52 Parazynski 52 Lee Archambault 51 Fincke 51 shuttle robotic arm 51 shuttle missions 51 Lopez Alegria 51 spacemen 51 Soyuz rocket 51 orbital outpost 50 Fuglesang 50 spacewalking 50 Padalka 50 NASA astronaut 50 Space Shuttle 50 Orion spacecraft 50 Hubble Space Telescope 50 Soyuz TMA 50 Mission Control 49 NASA Space Shuttle 49 John Grunsfeld 49 Russian cosmonauts 49 lunar orbiter 49 Soichi Noguchi 49 Astronaut 49 Mike Fincke 49 liftoff 49 EDWARDS AIR FORCE BASE 49 orbiting laboratory 49 Shuttle 49 robotic arm 49 Space Shuttle Program 49 Phoenix lander 49 spacewalking astronauts 49 Melroy 49 Shuttle commander 48 spacewalker 48 orbiting lab 48 Orbiter 48 Foale 48 Soyuz capsule 48 Daniel Tani 48 ISS 48 orbit 48 payload bay 47 Spacecraft 47 spacesuits 47 commander Peggy Whitson 47 Curbeam 47 space shuttles 47 unmanned spacecraft 47 orbiters 47 Danny Olivas