Related by context. Frequent words. (Click for all words.) 64 Gerstenmaier 55 space shuttle 55 director Mike Leinbach 55 space shuttle Discovery 54 shuttle Discovery 53 orbiter 53 NASA 53 Space Shuttle Discovery 52 Ares IX 52 liftoff 52 International Space Station 51 Suffredini 51 shuttle missions 51 JAXA 51 Leinbach 51 Mission Control 51 Shuttle Discovery 51 spacecraft 50 shuttle Atlantis 50 Space Shuttle Atlantis 50 shuttle 50 Endeavour astronauts 49 space shuttle Endeavour 49 Space Shuttle Endeavour 49 Discovery astronauts 49 spacewalk 48 Grunsfeld 48 shuttle Endeavour 48 ISRO 48 undocking 48 Perminov 48 Nasa 47 Mark Polansky 47 heat shield 47 undock 47 Space shuttle Discovery 47 astronauts 47 orbiters 47 Fincke 46 blastoff 46 space shuttles 46 Soyuz 46 Padalka 45 human spaceflight 45 NASA Administrator 45 Dittemore 45 Endeavour 45 LCROSS 45 orbiting lab 45 payload bay 45 shuttle fleet 45 spacewalks 45 Space shuttle Endeavour 45 space shuttle Atlantis 44 Shuttle 44 shuttle astronauts 44 Russian Soyuz capsule 44 Space Shuttle 44 Wakata 44 Space shuttle Atlantis 44 Rick Husband 44 manned spaceflight 44 Kennedy Space 43 orbiting outpost 43 Mike Fincke 43 spacewalkers 43 Soyuz spacecraft 43 Sriharikota 43 Kevin Stricklin 43 orbit 43 Chandrayaan 43 lunar landing 43 insulating foam 43 spaceflight 43 Space Station 42 ISS 42 Research Organisation ISRO 42 Soyuz capsule 42 orbiting laboratory 42 GSLV 42 orbiting 42 Hubble Space Telescope 42 PSLV 42 aboard Endeavour 42 spacewalking 41 Shenzhou 41 Space Agency 41 Russian Soyuz 41 Cape Canaveral Fla. 41 lander 41 Lopez Alegria 41 spacewalking astronauts 41 SpaceX 41 Eileen Collins 40 cosmonauts 40 David Nabarro 40 Russian cosmonauts 40 Russian cosmonaut 40 astronaut 40 orbital 40 Sea Launch