Related by context. Frequent words. (Click for all words.) 72 astronauts 64 Discovery astronauts 62 International Space Station 61 spacewalk 60 spacewalkers 59 astronaut 59 shuttle astronauts 59 Atlantis astronauts 59 Endeavour astronauts 59 Astronaut 57 shuttle Discovery 57 NASA 56 Space Station 56 space shuttle Discovery 56 Shuttle Discovery 55 astronauts aboard 55 spacewalks 55 shuttle Atlantis 55 cosmonauts 54 space shuttle 54 Space Shuttle Discovery 54 space shuttle Atlantis 54 Spacewalk 53 shuttle Endeavour 53 Lopez Alegria 53 Space Shuttle Atlantis 53 spacewalking astronauts 52 Space Shuttle Endeavour 52 Fincke 52 spacesuits 51 orbiting outpost 51 Mission Control 51 spacecraft 51 spacewalker 51 aboard Endeavour 51 NASA astronaut 51 orbiter 51 Endeavour 50 spacesuit 50 Nasa 50 spacewalking 49 Mike Fincke 49 CAPE CANAVERAL Fla. 49 Soyuz capsule 49 Space Shuttle 49 Space shuttle Discovery 49 space shuttle Endeavour 49 Atlantis 49 Flight Engineer 48 Russian cosmonauts 48 Flight controllers 48 Padalka 48 Soyuz 48 shuttle 48 zero gravity 48 ISS 47 shuttle missions 47 orbiting laboratory 47 Space shuttle Atlantis 47 Parazynski 47 crewmates 47 orbital outpost 46 robotic arm 46 Hubble 46 Feustel 46 spaceship 45 Hubble Space Telescope 45 orbit 45 CAPE CANAVERAL 45 undocking 45 airlock 45 space shuttles 45 Spacecraft 45 Mark Polansky 45 undock 45 Space shuttle Endeavour 44 blastoff 44 orbiters 44 Apollo astronauts 44 Malenchenko 44 Space Agency 44 ammonia tank 44 Grunsfeld 43 Wakata 43 orbiting lab 43 payload bay 43 Soyuz spacecraft 43 JAXA 43 manned spacecraft 43 cosmonaut 42 Kennedy Space 42 Space 42 Shuttle 42 Russian cosmonaut 42 Mars rover 42 Mars Rover 42 heat shield 42 liftoff 42 orbiting 42 Soyuz TMA 42 spaceflight