Related by context. Frequent words. (Click for all words.) 59 Krikalev 58 Oleg Kononenko 55 Endeavour astronauts 55 New Horizons spacecraft 54 Two spacewalking astronauts 54 Wakata 54 Lopez Alegria 53 Shuttle astronauts 53 Shuttle Discovery 53 Kaleri 53 spacewalk 53 Dan Tani 53 Nicole Stott 53 Astronauts aboard 53 Shenzhou VII 53 Discovery astronauts 52 Atlantis astronauts 52 Padalka 52 Japanese astronaut Soichi 52 Chamitoff 52 shuttle Discovery 51 shuttle Atlantis 51 Spacewalkers 51 International Space Station 51 6 #/#-hour spacewalk 51 Space Shuttle Atlantis 51 space shuttle Endeavour 51 Lyndin 51 Sandra Magnus 51 spacewalkers 51 orbiting laboratory 50 Gregory Chamitoff 50 Spacewalking astronauts 50 orbital outpost 50 Mikhail Kornienko 50 spacewalking 50 shuttle Endeavour 50 Greg Chamitoff 50 Malenchenko 50 Bob Thirsk 50 orbiting outpost 50 Shuttle Endeavour 50 By NewsDesk 50 Andrew Feustel 49 Yurchikhin 49 orbiting telescope 49 Stardust spacecraft 49 Shuttle Atlantis 49 orbiting complex 49 astronaut Peggy Whitson 49 Hubble servicing 49 GOCE 49 director Holly Ridings 49 Parazynski 49 Curbeam 49 Caldwell Dyson 49 Fyodor Yurchikhin 48 Space Shuttle Endeavour 48 shuttle astronauts 48 orbiting 48 orbiting observatory 48 space shuttle Discovery 48 aboard Endeavour 48 Shenzhou V 48 Space Shuttle Discovery 48 astronaut Sunita Williams 48 Mission Specialists 48 space shuttle Atlantis 48 lunar orbit 48 commander Rick Sturckow 48 SpaceX Falcon 9 48 astronauts 48 Fincke 48 Piers Sellers 47 Heidemarie Stefanyshyn Piper 47 Dragon capsule 47 Cassini Huygens 47 orbiter 47 undock 47 orbital module 47 Endeavour 47 John Grunsfeld 47 Shenzhou VI 47 Soyuz rocket 47 Mark Polansky 47 Leroy Chiao 47 Astronauts 47 Daniel Tani 47 Sunita Williams 47 EVAs 47 Gorie 47 Soichi Noguchi 47 spacewalks 47 Discovery liftoff 47 Rick Mastracchio 46 Hubble Space Telescope 46 spacewalking partner 46 Spacewalk 46 KENNEDY SPACE CENTER 46 Soviet cosmonaut Yuri Gagarin 46 spacewalker