Related by context. Frequent words. (Click for all words.) 68 astronauts 62 International Space Station 59 shuttle missions 59 Malenchenko 59 spacecraft 59 astronaut 59 cosmonauts 58 Padalka 58 orbiting laboratory 58 spacewalkers 58 spacewalk 58 Yurchikhin 58 Discovery astronauts 58 spacewalks 57 Astronauts 57 Atlantis astronauts 57 shuttle astronauts 57 orbiters 57 Endeavour astronauts 56 orbiter 56 NASA 56 spacemen 56 spacewalking 56 crewmates 55 Soyuz 55 NASA astronaut 55 aboard Endeavour 55 shuttle Atlantis 55 cosmonaut 54 shuttle Discovery 54 orbit 54 space shuttle 54 orbital outpost 54 orbiting outpost 54 Fincke 53 Soyuz capsule 53 Wakata 53 orbiting 53 spaceflight 53 crewmembers 53 space shuttle Discovery 53 Soyuz spacecraft 53 shuttle Endeavour 53 shuttle 52 Russian cosmonauts 52 Space Agency 52 spacewalker 52 Fuglesang 52 Tokarev 52 manned spacecraft 52 ISS 52 Russian cosmonaut 52 Shuttle Atlantis 52 Tracy Caldwell Dyson 51 Shuttle Discovery 51 Grunsfeld 51 Stefanyshyn Piper 51 Apollo astronauts 51 Chiao 51 Soyuz TMA 51 space shuttle Endeavour 51 Space Shuttle Discovery 51 astronauts aboard 50 spacewalking astronauts 50 orbital 50 Vinogradov 50 Space Shuttle 50 Lopez Alegria 50 commander Rick Sturckow 50 space shuttles 50 Space Shuttle Endeavour 49 space shuttle Atlantis 49 manned missions 49 Sharipov 49 Flight Engineer 49 John Grunsfeld 49 Soichi Noguchi 49 Shuttle Endeavour 49 Endeavour 49 Melroy 49 Perminov 49 orbiting lab 49 Foale 49 Space Shuttle Atlantis 49 manned spaceflight 49 Earth orbit 48 Kopra 48 Astronaut 48 human spaceflight 48 liftoff 48 Nasa 48 Space Station 48 STS 48 Russian Soyuz spacecraft 48 Parazynski 48 lunar lander 48 Kotov 48 shuttle fleet 48 JAXA 48 spacesuits 48 blastoff