Related by context. Frequent words. (Click for all words.) 62 Zhai Zhigang 62 Nie Haisheng 60 Yang Liwei 60 taikonaut 59 astronaut Yang Liwei 58 Shenzhou VII 57 Yuri Malenchenko 56 Space Shuttle Endeavor 56 manned spaceship 56 Shenzhou V 55 orbited Earth 55 Mike Melvill 54 astronaut 54 astronaut Peggy Whitson 53 Shenzhou 53 Gene Cernan 52 manned spacecraft 52 Budarin 52 Shenzhou VI 52 VSS Enterprise 52 Soyuz capsule carrying 52 Jiuquan Satellite Launch 52 Xichang 52 taikonauts 51 ISS Expedition 51 Messenger spacecraft 51 astronaut Ilan Ramon 51 Hayabusa probe 51 Astronauts aboard 51 astronauts 51 Jiuquan 51 Randolph Bresnik 50 Ares IX rocket 50 Japanese astronaut Soichi 50 Tim Kopra 50 cosmonaut Yuri Gagarin 50 Frank Borman 50 lunar orbiter 50 NASA 49 Discovery STS 49 cosmonaut training 49 Piers Sellers 49 commander George Zamka 49 unmanned lunar 49 Plesetsk Cosmodrome 49 Alexander Kaleri 49 Gus Grissom 49 Metcalf Lindenburger 49 spaceship 49 Tanegashima Space Center 49 Soviet cosmonaut Yuri Gagarin 49 Nasa 49 Cady Coleman 48 spacecraft 48 Hoshide 48 Shuttle astronauts 48 Gagarin 48 Oleg Kononenko 48 Robert Curbeam 48 Russian Gennady Padalka 48 TJ Creamer 48 fighter pilot 48 reusable spacecraft 48 Chang'e 48 Haise 48 agency Roskosmos 48 Owen Garriott 48 cosmonaut 48 commander Dominic Gorie 48 sub orbital 48 Virgin Atlantic GlobalFlyer 48 Sergei Volkov 48 NASA astronaut corps 48 Lyndin 48 NASA astronaut 47 lunar rover 47 PSLV C# 47 Kenneth Ham 47 robotic spacecraft 47 SpaceX Falcon 9 47 Lunar Module 47 chief Anatoly Perminov 47 Peggy Whitson 47 spaceplane 47 commander Peggy Whitson 47 Malenchenko 47 space shuttle 47 Ron Garan 47 Russian Soyuz TMA 47 Minister Cao Gangchuan 47 Lee Archambault 47 KSLV 1 47 unpiloted 47 Space Launch Vehicle 47 Space Shuttle Discovery 47 administrator Sean O'Keefe 46 space shuttle Discovery 46 Zamka 46 astronaut Julie Payette 46 director Tony Ceccacci 46 Atlantis undocked