Related by context. Frequent words. (Click for all words.) 81 space shuttle Endeavour 78 shuttle Atlantis 77 space shuttle Discovery 75 shuttle Discovery 71 space shuttle Atlantis 70 Endeavour 69 International Space Station 66 Space Shuttle Discovery 65 spacewalk 65 space shuttle 65 Space shuttle Endeavour 65 Space shuttle Discovery 63 shuttle astronauts 63 Discovery astronauts 63 astronauts 61 Endeavour astronauts 61 orbiter 60 Space shuttle Atlantis 59 Atlantis 59 Soyuz capsule 59 shuttle 58 undock 57 orbiting outpost 57 Soyuz 57 Russian Soyuz spacecraft 56 spacewalks 56 Mission Control 56 liftoff 56 spacecraft 55 Kennedy Space 55 shuttle missions 55 NASA 55 Atlantis astronauts 55 astronaut 55 shuttle fleet 54 Soyuz TMA 54 orbiting lab 54 Cape Canaveral Fla. 54 spacewalking astronauts 53 Astronauts 53 Gerstenmaier 53 space shuttles 53 Hubble Space Telescope 53 spacewalkers 53 Cape Canaveral 52 Mike Fincke 52 NASA astronaut 52 CAPE CANAVERAL Fla. 52 astronauts aboard 52 Nasa 52 undocking 52 Space Shuttle 52 crewmates 51 Space Station 51 Soyuz spacecraft 50 Dextre 50 Fincke 50 Cape Canaveral Air Force 50 spacewalking 50 Chamitoff 50 Russian Soyuz 50 spaceship 49 Space Agency 49 Baikonur Cosmodrome 49 STS 49 Astronaut 49 heat shield 49 CAPE CANAVERAL 49 spacewalker 49 lander 48 orbiting 48 orbiters 48 JAXA 48 Flight controllers 48 robotic arm 47 orbit 47 Kibo 47 Thomas Reiter 47 Russian cosmonauts 47 ISS 46 Flight Engineer 46 Mars rover 46 launch pad 46 spaceflight 46 LCROSS 45 Baikonur cosmodrome 45 Hubble 45 Spacewalk 45 Discovery 45 spacesuits 45 docking port 45 solid rocket boosters 45 airlock 44 Ariane 5 44 thermal blanket 44 spacesuit 44 director Mike Leinbach 44 Shuttle 44 cosmonauts 44 Hubble telescope 44 Chiao