Related by context. Frequent words. (Click for all words.) 71 orbiter 68 thermal tiles 62 liftoff 61 foam insulation 61 spacecraft 60 insulating foam 59 thermal blanket 55 space shuttle Discovery 55 space shuttle 54 Discovery astronauts 53 lander 53 Gerstenmaier 53 Dittemore 53 shuttle 52 shuttle Discovery 52 nose cone 52 foam 52 NASA 52 shuttle Atlantis 51 space shuttle Atlantis 51 Columbia Accident Investigation 50 astronauts 50 Martian surface 50 undocking 49 orbiters 49 spacesuits 49 shuttle Endeavour 48 Nasa 48 solid rocket boosters 48 Endeavour 48 shuttle missions 48 Orbiter 48 space shuttle Endeavour 47 Atlantis astronauts 47 shuttle astronauts 47 spacewalk 47 thruster 47 Space Shuttle Discovery 47 lunar surface 47 spacewalking astronauts 47 Soyuz 46 Hubble Space Telescope 46 Soyuz capsule 46 space shuttles 46 spacewalkers 46 Huygens 46 fuselage 46 Space Shuttle 46 Mission Control 45 JAXA 45 rover 45 Cassini 45 astronauts aboard 45 Hubble 45 Mars Reconnaissance Orbiter 45 Columbia disintegrated 44 orbit 44 rovers 44 Red Planet 44 Mars rover 44 spaceship 44 landing gear 43 spacesuit 43 thrusters 43 shuttle fleet 43 Cape Canaveral Fla. 43 Chandrayaan 43 LCROSS 43 containment vessel 43 robotic arm 43 International Space Station 43 corrosion 42 Hayabusa 42 engine compartment 42 asteroid 42 Astronauts 42 Earth orbit 42 booster rocket 42 STS 42 Saturn moon 42 reentry 42 comet 42 Gehman 41 Shuttle 41 blowout preventer 41 nicks 41 Phoenix Mars Lander 41 Kennedy Space 41 hull 41 aerodynamic 41 dings 41 flyby 41 Spacecraft 41 welds 40 Space shuttle Atlantis 40 Hubble telescope 40 cockpit 40 Atlantis 40 spacewalks 40 MESSENGER 40 Parazynski