Related by context. Frequent words. (Click for all words.) 49 Bolden 44 Sean O'Keefe 44 NASA Administrator 42 human spaceflight 42 NASA 41 manned spaceflight 39 Leon Panetta 39 John Pistole 39 Robert Gates 39 astronaut Buzz Aldrin 39 CEO Rick Wagoner 38 Marion Blakey 38 NASA astronaut 37 Eric Holder 37 astronaut 37 spaceflight 37 Jane Lubchenco 37 Steven Chu 37 space shuttle 36 Shuttle Atlantis 36 LaHood 36 staff Rahm Emanuel 36 Space Shuttle Endeavour 36 David Petraeus 36 CEV 36 Rick Wagoner 36 Marine Corps commandant 36 David Paulison 35 Amr Moussa 35 President Barack Obama 35 Secretary Steven Chu 35 John Abizaid 35 Michael Bromwich 35 International Space Station 35 Secretary Ray LaHood 35 Neil Armstrong 35 Education Margaret Spellings 35 Sally Ride 35 Nasa 35 Norton Schwartz 35 shuttle Discovery 35 Satcher 35 Sam Bodman 34 Karl Eikenberry 34 Alan Shepard 34 Margaret Hamburg 34 Norman Y. Mineta 34 manned spacecraft 34 Fincke 34 Shaun Donovan 34 astronauts 34 shuttle fleet 34 John Kerry D-Mass. 34 Michael Chertoff 34 Yuri Gagarin 34 John McCain R-Ariz. 34 Mabus 34 Director Leon Panetta 34 Shinseki 34 Astronaut 33 Shuttle Discovery 33 Space Exploration 33 Ken Salazar 33 Education Arne Duncan 33 Paul Bremer 33 Joseph Biden 33 Space Agency 33 Endeavour astronauts 33 National Aeronautics 33 Perminov 33 Buzz Aldrin 33 Jay Carney 33 Julius Genachowski 33 space shuttles 33 Eileen Collins 33 Secretary Arne Duncan 33 James Mattis 33 Chief Executive Carlos Ghosn 33 orbit 33 Lubchenco 33 Admiral Thad Allen 32 Alberto Gonzales 32 Igor Ivanov 32 Space Shuttle Discovery 32 Jacob Lew 32 Jaap de Hoop Scheffer 32 H. Petraeus 32 Secretary Janet Napolitano 32 Secretary Norman Mineta 32 lunar landing 32 Paulison 32 manned missions 32 Garriott 32 Spencer Abraham 32 John Grunsfeld 32 McCLELLAN Well 32 Robert Gibbs 32 Bart Gordon 32 shuttle 32 Mike Leavitt 32 director Mike Leinbach