Related by context. Frequent words. (Click for all words.) 64 heat shield 56 orbiter 56 liftoff 55 space shuttle 54 insulating foam 53 space shuttle Discovery 53 shuttle Discovery 52 thermal tiles 52 shuttle fleet 52 shuttle 50 shuttle Atlantis 50 space shuttles 49 foam insulation 48 shuttle missions 48 Dittemore 47 space shuttle Endeavour 47 spacecraft 46 Space Shuttle Discovery 46 Gerstenmaier 46 orbiters 46 shuttle Endeavour 45 Discovery astronauts 45 Columbia disintegrated 45 Columbia Accident Investigation 45 Hubble Space Telescope 43 Endeavour 43 Soyuz 43 space shuttle Atlantis 43 Space Shuttle Atlantis 43 astronauts 43 orbiting laboratory 43 Hubble telescope 43 astronauts aboard 42 Atlantis astronauts 42 undocking 41 shuttle astronauts 41 NASA 41 Gehman 41 Hubble 41 Space shuttle Discovery 41 Nasa 40 payload bay 40 Endeavour astronauts 40 Shuttle Discovery 40 booster rockets 40 Space shuttle Atlantis 40 thermal blanket 40 Soyuz capsule 40 International Space Station 39 Space Shuttle 39 foam 39 Shuttle 39 rotary joint 39 Russian Soyuz 39 spacewalkers 39 director Mike Leinbach 38 Mission Control 38 undock 38 Parazynski 38 Space shuttle Endeavour 38 flyby 38 orbit 38 orbiting outpost 38 spacewalk 38 blastoff 37 hull 37 spy satellites 37 Atlantis 37 manned spacecraft 37 human spaceflight 36 orbiting lab 36 nose cone 36 spacewalks 36 Soyuz TMA 36 spacesuits 36 spaceship 36 Cape Canaveral Fla. 36 spacewalking astronauts 36 exterior 36 Mars Reconnaissance Orbiter 35 shuttles 35 Space Shuttle Columbia 35 superjumbos 35 Rosenker 35 Kennedy Space 35 telescope 35 comet 35 Astronauts 35 Perminov 35 Sumwalt 35 Leinbach 35 orbital outpost 35 thorough inspection 35 Flight controllers 34 LCROSS 34 Soyuz spacecraft 34 CAPE CANAVERAL Fla. 34 Martian surface 34 Orbiter 34 inspection 34 Qantas A#