Related by context. Frequent words. (Click for all words.) 63 Neil Armstrong 60 Aldrin 49 Apollo astronauts 49 astronaut 47 NASA astronaut 46 Alan Shepard 46 lunar surface 46 Eileen Collins 44 Yuri Gagarin 43 Lance Bass 43 lunar landing 42 Space Shuttle Discovery 42 William Shatner 42 Mars Rover 42 Sally Ride 42 spaceflight 41 astronauts 41 moon 41 spacesuit 40 NASA 39 Donny Osmond 39 NASA Administrator 39 Mark Polansky 39 Regis Philbin 38 Astronaut 38 cosmonaut 38 Captain Kirk 38 spacewalker 38 Whoopi Goldberg 38 Leonard Nimoy 38 spaceship 38 LL Cool J 38 Fincke 38 Astronauts 37 Russian cosmonauts 37 International Space Station 37 space shuttle 37 moonwalk 37 Endeavour astronauts 37 Julius Erving 37 Kristi Yamaguchi 37 Carl Sagan 36 Space Shuttle 36 Saturn V 36 Jerry Seinfeld 36 Jimmy Fallon 36 Right Stuff 36 Russian cosmonaut 36 Brooke Shields 36 Ellen DeGeneres 36 Space Exploration 36 manned spaceflight 36 Carmen Electra 36 Simonyi 36 Sir Richard Branson 36 Space Shuttle Endeavour 35 George Takei 35 SpaceShipOne 35 Burt Rutan 35 Alan Grier 35 Mars 35 Stephen Hawking 35 Padalka 35 shuttle Discovery 35 Nasa 35 Jeff Bezos 35 cosmonauts 35 outer space 35 Space Adventures 35 Bruce Willis 35 Space Shuttle Atlantis 35 David Hasselhoff 35 Mars rover 35 Wakata 35 Space Station 35 Tonight Show 35 Katie Couric 35 Han Solo 35 Star Trek 35 C 3PO 35 Jay Leno 35 Patti LaBelle 34 Mars Exploration 34 Walter Cronkite 34 Soyuz spacecraft 34 Amelia Earhart 34 Saturn moon 34 Kirstie Alley 34 Schirra 34 Lopez Alegria 34 Shuttle Discovery 34 airlock 34 Martian surface 34 Grunsfeld 34 Ellen Degeneres 34 David Letterman 34 Meredith Vieira 34 Carrie Fisher 34 Smokey Robinson 34 Stephen Fry 34 Soyuz capsule