Related by context. Frequent words. (Click for all words.) 49 astronaut Buzz Aldrin 48 Astronaut Buzz Aldrin 47 Ron Garan 46 JPL manages 46 Shuttle astronauts 45 Soviet cosmonaut Yuri Gagarin 45 ISS Expedition 45 Baikonur Kazakhstan 45 orbited Earth 44 planetary missions 44 Apollo missions 44 NASA astronaut corps 44 spaceship 44 By Irene Klotz 44 Tim Kopra 43 Russian leased Baikonur 43 NASA astronaut 43 commander George Zamka 43 Mission Specialists 42 Gorie 42 Apollo 42 Shuttle Discovery 42 Nasa Jet Propulsion 42 Julie Payette 42 spacecraft 42 Apollo lunar 42 Hubble servicing 42 Anousheh Ansari 42 Rex Walheim 42 moon 42 Stardust spacecraft 42 New Horizons spacecraft 42 Malik Yoba 42 NASA Astronaut 41 Nasa 41 Edwin Buzz Aldrin 41 innermost planet 41 Sergei Volkov 41 Dennis Tito 41 Orion spacecraft 41 interplanetary spacecraft 41 ESA astronaut 41 Cassini 41 PSLV C# 41 space shuttle 41 astronaut Leopold Eyharts 41 G Madhavan Nair 41 NASA Deep Impact 41 June Scobee Rodgers 41 shuttle Challenger 41 Shuttle Endeavour 41 Jet Propulsion Laboratory JPL 41 Russian Soyuz TMA 41 NASAs 40 astronaut Yang Liwei 40 Webb Telescope 40 astronaut 40 Roberto Vittori 40 NASA Lunar Reconnaissance 40 Eugene Cernan 40 NASA Cassini 40 NASA Kepler 40 Koichi Wakata 40 spaceman 40 James Doohan 40 VSS Enterprise 40 SpaceX Falcon 9 40 space shuttles Endeavour 40 Space Shuttle Endeavour 40 moon Charon 40 Cape Canaveral Fla. 40 Shenzhou V 40 Cape Canaveral 40 unmanned spacecraft 40 Buzz Aldrin 40 Russian cosmonaut Yuri Malenchenko 40 Space Shuttle Discovery 40 Oceansat 2 40 tourist Charles Simonyi 39 Jet Propulsion Lab 39 Cassini Huygens 39 Zero Gravity Corporation 39 comet Hartley 2 39 Yang Liwei 39 NASA 39 John Grunsfeld 39 G. Madhavan Nair 39 Russian cosmonaut Gennady Padalka 39 Russian Soyuz rocket 39 Nasdaq APOL 39 Fyodor Yurchikhin 39 NEEMO 39 Budarin 39 Dragon capsule 39 Piers Sellers 39 EPOXI 39 NASA Mars Reconnaissance 39 Japanese astronaut Koichi 39 rover Opportunity 39 human spaceflight 39 Space.com