Related by context. Frequent words. (Click for all words.) 58 NASA astronaut 57 NASA Astronaut 57 astronaut 57 Soichi Noguchi 56 Robert Behnken 55 Nicole Stott 53 Astronaut 52 Mission Specialists 51 spacewalker 51 Lee Archambault 51 Space Shuttle Discovery 51 Space Shuttle Endeavour 50 NASA 50 International Space Station 50 astronauts 50 Nasa 50 shuttle 50 Andrew Feustel 50 Space Shuttle Atlantis 49 space shuttle Discovery 49 Spacewalkers 48 shuttle Discovery 48 space shuttle 48 Flight Engineer 48 Christer Fuglesang 48 Linnehan 48 Gregory Chamitoff 48 Mastracchio 47 Shuttle commander 47 Lopez Alegria 47 space shuttle Endeavour 47 Foale 47 Parazynski 47 Danny Olivas 47 Spacewalking astronauts 47 Rick Mastracchio 46 space shuttle Atlantis 46 Astronauts 46 Eric Boe 46 Wakata 46 Shuttle Endeavour 46 Sandra Magnus 46 Mike Fincke 46 Whitson 46 spacecraft 46 aboard Endeavour 46 Readdy 46 Stefanyshyn Piper 45 spacewalk 45 Daniel Tani 45 Fincke 45 spacewalkers 45 orbiting 45 Shuttle Atlantis 45 Discovery astronauts 45 Eileen Collins 45 Shuttle Discovery 45 Camarda 45 Acaba 45 Kopra 45 Polansky 45 spacewalking astronauts 45 Fuglesang 44 Cape Canaveral 44 Atlantis astronauts 44 Caldwell Dyson 44 spaceflight 44 Peggy Whitson 44 Doug Wheelock 44 orbiting laboratory 44 crewmates 44 Nespoli 44 Space shuttle Atlantis 44 shuttle Endeavour 44 Mission Control 44 orbital debris 44 Hoshide 44 spaceship 43 Mark Polansky 43 orbital outpost 43 Hobaugh 43 orbiter 43 zero gravity 43 Shuttle Launch 43 Astronauts aboard 43 cosmonaut 43 spacewalking 43 Behnken 43 Tracy Caldwell Dyson 43 Space Shuttle 43 Melroy 43 orbit 43 Grunsfeld 43 By Irene Klotz 43 Fossum 42 planetary scientist 42 Gerstenmaier 42 shuttle Atlantis 42 Simonyi 42 Shuttle 42 Sunita Williams