Related by context. Frequent words. (Click for all words.) 73 astronaut 72 astronauts aboard 72 space shuttle 72 Astronauts 71 International Space Station 71 shuttle astronauts 70 Discovery astronauts 68 NASA 68 spacecraft 66 orbiter 65 shuttle missions 65 space shuttle Discovery 65 cosmonauts 65 shuttle Discovery 63 spacewalkers 63 spacewalk 63 shuttle Endeavour 63 space shuttles 62 Nasa 62 Soyuz 62 shuttle 62 spacewalks 61 Mission Control 61 orbiters 61 shuttle Atlantis 61 space shuttle Endeavour 60 Atlantis astronauts 60 NASA astronaut 60 space shuttle Atlantis 59 spaceflight 59 crewmates 59 Space Shuttle 58 Soyuz spacecraft 58 Fincke 58 Space Shuttle Discovery 58 orbit 58 spaceship 58 Endeavour 58 Space Station 58 orbiting outpost 57 Astronaut 56 spacesuits 56 shuttle fleet 56 spacesuit 55 liftoff 55 orbiting 55 Russian Soyuz 54 Soyuz TMA 54 Atlantis 54 Kennedy Space 53 cosmonaut 53 Hubble Space Telescope 53 NASA Administrator 53 ISS 52 rovers 52 crewmembers 52 Shenzhou 52 spacewalking 52 lander 52 human spaceflight 51 Space Agency 51 Space shuttle Discovery 50 heat shield 50 Parazynski 49 lunar surface 49 zero gravity 49 Hubble 49 rover 49 Columbia disintegrated 49 JAXA 49 crewmen 49 robotic arm 48 Cape Canaveral Fla. 48 undock 48 Baikonur Cosmodrome 48 Earth orbit 48 weightlessness 47 Hubble telescope 47 Mike Fincke 47 undocking 47 STS 47 Shuttle 47 spaceships 47 capsule 47 Cape Canaveral Air Force 47 astronaut corps 47 Space shuttle Atlantis 47 Gagarin 46 Chandrayaan 46 orbital 46 CAPE CANAVERAL Fla. 46 Cape Canaveral 46 Space shuttle Endeavour 46 Mars 46 Baikonur 46 Chang'e 46 National Aeronautics 46 Baikonur cosmodrome 45 Dextre 45 shuttles 45 outer space