Related by context. Frequent words. (Click for all words.) 63 Shenzhou 62 taikonauts 62 manned spacecraft 58 Chang'e 58 lunar orbiter 56 lunar probe 54 Yuri Gagarin 52 manned missions 51 orbit 50 manned spaceflight 50 astronauts 50 Jiuquan 50 Zhai 49 astronaut 49 Soyuz rocket 48 cosmonaut 48 International Space Station 47 Russian Soyuz spacecraft 47 Nicole Stott 47 Malenchenko 47 lunar orbit 47 Soyuz craft 47 orbited 47 Chandrayaan 46 Dennis Tito 46 orbiting laboratory 46 lunar exploration 46 lunar landing 46 Russian Soyuz capsule 46 spaceflight 46 sub orbital 46 astronaut Sunita Williams 45 spacecraft 45 lunar missions 45 unmanned spacecraft 45 suborbital flight 45 orbiting 45 Wakata 45 Sina.com 45 Gagarin 45 remote sensing satellite 45 Soyuz capsule 44 Baikonur Cosmodrome 44 Russian Soyuz rocket 44 Russian cosmonauts 44 orbiters 44 NASA astronaut 44 Anousheh Ansari 44 shuttle Discovery 44 suborbital flights 43 Space Shuttle Endeavour 43 Space Shuttle Discovery 43 Soyuz spacecraft 43 Chairman Mao Zedong 43 Orion spacecraft 43 Liu Xiang 43 Earth orbit 43 Zhang Yining 43 outer space 43 polar orbit 43 Yao Ming 43 lunar surface 42 Sunita Williams 42 Soyuz 42 Skylab 42 Tiananmen Square protests 42 Tian'anmen Square 42 Fei 42 Roskosmos 42 Soyuz TMA 42 spaceship 42 cosmonauts 42 Sichuan province 42 Inner Mongolia 42 spacewalking 42 orbiter 42 aboard Endeavour 42 Neil Armstrong 42 southwestern Sichuan province 42 Mao Zedong 41 spacecrafts 41 space shuttle 41 Hunan Province 41 orbital outpost 41 geostationary orbit 41 space shuttle Discovery 41 Kaleri 41 Sun Yat sen 41 Sichuan Province 41 Alan Shepard 41 JAXA 41 Kazakh steppe 41 Hohhot 41 Hu Yaobang 41 Anhui Province 41 Beijing 41 Chiao 41 shuttle Atlantis 41 spacesuit 41 Fujian Province 41 Zheng Jie