Related by context. Frequent words. (Click for all words.) 73 6 #/#-hour spacewalk 62 spacewalk 62 Shuttle astronauts 61 Mission Specialists 60 Robert Behnken 60 Fyodor Yurchikhin 59 Christer Fuglesang 58 Oleg Kononenko 58 Doug Wheelock 57 Endeavour astronauts 57 Spacewalkers 57 spacewalks 56 Piers Sellers 55 Dan Tani 55 EVAs 55 Mikhail Kornienko 55 International Space Station 55 Rick Mastracchio 55 Heidemarie Stefanyshyn Piper 55 Lee Archambault 54 spacewalking partner 54 Discovery astronauts 54 astronauts 54 spacewalking 53 Spacewalk 53 Spacewalking astronauts 53 aboard Endeavour 53 Yurchikhin 53 spacewalkers 53 Shuttle commander 53 Krikalev 52 Greg Chamitoff 52 Stefanyshyn Piper 52 Lyndin 52 Two spacewalking astronauts 52 Soichi Noguchi 52 Tracy Caldwell Dyson 52 orbital module 52 Nicole Stott 51 Astronauts 51 Lopez Alegria 51 Astronauts aboard 51 Malenchenko 51 Harmony module 51 Padalka 51 shuttle missions 51 Paolo Nespoli 51 space shuttle Discovery 51 crewmates 51 Eric Boe 51 Sandra Magnus 51 shuttle Endeavour 51 Caldwell Dyson 50 Space Shuttle Atlantis 50 Space Shuttle Discovery 50 spacewalking astronauts 50 shuttle Discovery 50 Space Shuttle Endeavour 50 space shuttle Endeavour 50 Frank De Winne 50 Sturckow 50 Fuglesang 50 shuttle Atlantis 50 Shuttle Discovery 50 orbiting complex 50 Commander Eileen 50 astronaut 50 Andrew Feustel 50 truss segment 49 Gorie 49 Tony Antonelli 49 shuttle payload bay 49 undocking 49 NASA 49 director Holly Ridings 49 Canadarm2 49 Mission Control 49 Vinogradov 49 robotic arm 49 shuttle robotic arm 49 Flight Engineer 49 Baikonur Kazakhstan 49 ammonia coolant 49 Bob Thirsk 49 astronaut Peggy Whitson 49 Peggy Whitson 49 spacesuits 49 orbital outpost 48 Space shuttle Atlantis 48 ESA astronaut 48 Discovery payload bay 48 Alan Poindexter 48 astronaut Paolo Nespoli 48 orbit 48 NASA astronaut 48 Atlantis astronauts 48 spaceflights 48 Hubble servicing 48 Garrett Reisman 48 SpaceX Falcon 9 48 By Irene Klotz