Related by context. Frequent words. (Click for all words.) 59 heat shield 56 thermal tiles 54 space shuttle Discovery 50 shuttle Discovery 50 orbiter 49 space shuttle Atlantis 49 space shuttle Endeavour 48 liftoff 47 spacewalk 47 insulating foam 46 shuttle Atlantis 45 foam insulation 45 Space Shuttle Discovery 44 shuttle Endeavour 44 Gerstenmaier 44 shuttle 43 lander 43 Space Shuttle Atlantis 43 Atlantis astronauts 43 spacewalking astronauts 43 payload bay 43 spacecraft 43 Endeavour astronauts 42 Discovery astronauts 42 Parazynski 41 spacesuits 41 Mission Control 41 undocking 41 Space Shuttle Endeavour 41 NASA 41 spacewalking 41 space shuttle 40 rotary joint 40 Soyuz capsule 40 Mike Fincke 40 Endeavour 40 shuttle astronauts 40 spacewalkers 40 orbit 40 robotic arm 40 Cape Canaveral Fla. 39 fuselage 39 truss 39 foam 39 International Space Station 39 Shuttle Discovery 39 Nasa 39 astronauts 39 aboard Endeavour 39 solid rocket boosters 38 Kennedy Space 38 landing gear 38 Spacewalk 38 Space shuttle Discovery 38 nose cone 38 Cassini 38 orbiting outpost 38 Mark Polansky 37 peeled 37 Soyuz TMA 37 Padalka 37 Flight controllers 37 orbiting 37 Space shuttle Endeavour 37 shuttle missions 37 Orbiter 37 spacewalks 37 Hubble telescope 37 Soyuz spacecraft 37 Fincke 37 Hubble Space Telescope 36 Dextre 36 Hubble 36 booster rocket 36 solar arrays 36 Flight Engineer 36 Atlantis 36 spacesuit 36 Cape Canaveral 36 spacewalker 36 Space shuttle Atlantis 35 Wakata 35 Huygens 35 Martian surface 35 Sriharikota 35 Dittemore 35 blastoff 35 rudder 35 Rick Husband 35 flyby 35 Earth orbit 35 STS 35 Cassini spacecraft 34 JAXA 34 Mars Reconnaissance Orbiter 34 rovers 34 orbiting laboratory 34 Martian soil 34 Space Agency 34 Grunsfeld 34 orbiting lab