Related by context. Frequent words. (Click for all words.) 60 Nhat V. Meyer 57 Wally Schirra 53 Frank Borman 52 Gus Grissom 52 lunar module pilot 50 Gene Cernan 49 astronomer Carl Sagan 48 Apollo astronauts 48 Alan Shepard 48 cosmonaut Yuri Gagarin 47 Soviet cosmonaut Yuri Gagarin 47 Mars Pathfinder 47 Astronaut Buzz Aldrin 47 Edwin Buzz Aldrin 47 Scott Crossfield 46 Messenger spacecraft 46 By Irene Klotz 46 Mercury Gemini 46 shuttle Challenger 45 Compton Gamma Ray 45 Owen Garriott 45 On Orbit Status 45 Cernan 45 Neil Armstrong 45 Actor Dennis Hopper 45 Apollo missions 45 Lunar Reconnaissance Orbiter LRO 45 Pat Shingleton 45 NASA Spacecraft 45 orbited Earth 44 NASA Cassini 44 Schirra 44 Mercury 44 Space Shuttle Launch 44 Apollo 44 Mars Lander 44 Voyager spacecraft 43 NASA Kepler 43 Carl Sagan 43 Space Shuttle Endeavor 43 June Scobee Rodgers 43 Dr. Dorothy Height 43 Today Birthdays Comedian 43 moonwalker 43 Sputnik satellite 43 Lunar Module 43 Atlantis undocked 43 Spacecraft 42 Astronaut Scholarship 42 New Horizons spacecraft 42 Rod Dedeaux 42 NASA Stardust spacecraft 42 NASA Astronaut 42 Charles Dharapak Charles Dharapak 42 Skitch Henderson 42 NASA astronaut 42 Ken Bowersox 42 Levi Stubbs 42 astronaut Buzz Aldrin 41 Baikonur Kazakhstan 41 Doug Fieger 41 SpaceX Falcon 9 41 ISS Expedition 41 BY Drew Magary 41 Cotton Fitzsimmons 41 Pernell Roberts 41 Superbird 41 Marcia Dunn 41 Discovery undocked 41 Cape Canaveral Fla. 41 Senator Barry Goldwater 41 Sally Ride 41 Flyby 41 Haise 41 spacecraft 41 Gerald Herbert Gerald Herbert 41 tourist Charles Simonyi 41 Murray Warmath 41 Alexander Haig 41 anchor Walter Cronkite 41 Evangelist Oral Roberts 41 NASA 41 Apollo lunar 41 interplanetary spacecraft 41 astronaut 40 Barbree 40 Lux Interior 40 Salyut 40 OSIRIS REx 40 Robin Meade 40 Myrlie Evers Williams 40 JPL manages 40 Walter Cronkite 40 NASA Deep Impact 40 Global Surveyor 40 unmanned spacecraft 40 Martian Chronicles 40 Galileo spacecraft 40 Don Kirshner 40 Mikhail Tyurin 40 Professor Stephen Hawking