Related by context. Frequent words. (Click for all words.) 79 Fyodor Yurchikhin 68 Doug Wheelock 63 Mikhail Kornienko 62 Tracy Caldwell Dyson 60 Mission Specialists 60 Flight Engineer 58 Yurchikhin 57 Douglas Wheelock 57 Oleg Kononenko 55 Russian Soyuz TMA 55 astronaut Peggy Whitson 55 Piers Sellers 54 International Space Station 54 Baikonur Kazakhstan 54 Shuttle astronauts 54 spacewalk 54 Christer Fuglesang 53 astronauts 53 Rick Mastracchio 53 Greg Chamitoff 53 Sandra Magnus 53 Space Shuttle Endeavour 53 Soichi Noguchi 52 Two spacewalking astronauts 52 Stefanyshyn Piper 52 Space Shuttle Atlantis 52 astronaut 52 orbiter 52 Nicole Stott 52 Frank De Winne 52 aboard Endeavour 51 Soyuz TMA 51 By Irene Klotz 51 6 #/#-hour spacewalk 51 spacesuits 51 spacecraft 51 Astronauts aboard 51 Baikonur Cosmodrome 51 space shuttle Endeavour 51 Koichi Wakata 51 Spacewalkers 51 Soyuz rocket 51 Ariane rocket 50 Julie Payette 50 Astronauts 50 Eyharts 50 Marcia Dunn 50 Oleg Kotov 50 shuttle Atlantis 50 space shuttle Discovery 50 Shuttle commander 50 Launch Vehicle 49 Caldwell Dyson 49 Discovery astronauts 49 orbital module 49 Space Shuttle Discovery 49 spacewalks 49 Japanese astronaut Koichi 49 spacewalkers 49 Dan Tani 49 Paolo Nespoli 49 Japanese astronaut Soichi 49 NASA astronaut 48 Soyuz capsule 48 Taurus XL rocket 48 astronauts aboard 48 Michael Foale 48 Leroy Chiao 48 Daniel Tani 48 Shane Kimbrough 48 shuttle Endeavour 48 Heidemarie Stefanyshyn Piper 48 Space Agency 48 orbiting lab 48 Commander Eileen 48 orbit 48 SpaceX Falcon 9 48 Spacewalking astronauts 48 Andrew Feustel 48 Malenchenko 48 Russian cosmonauts 48 astronaut Julie Payette 48 Discovery payload bay 48 Padalka 48 crewmates 47 Soyuz craft 47 Russian Soyuz rocket 47 Robert Behnken 47 Astronaut 47 Fuglesang 47 NASA Astronaut 47 Endeavour astronauts 47 Vinogradov 47 Shuttle Atlantis 47 shuttle Discovery 47 Lonchakov 47 Soviet cosmonaut Yuri Gagarin 47 space shuttle 47 ammonia tank 47 airlock 47 spacesuit