Related by context. Frequent words. (Click for all words.) 63 Shenzhou 60 manned spacecraft 56 lunar probe 56 Chang'e 55 Zhai 55 manned spaceflight 54 Yuri Gagarin 52 cosmonaut 50 astronaut 50 manned missions 50 Gagarin 49 Perminov 48 Wakata 48 lunar exploration 48 Sina.com 47 astronauts 47 spacecraft 47 orbit 47 Fei 46 International Space Station 46 cosmonauts 46 Chiao 46 spaceship 45 sub orbital 45 Malenchenko 45 spaceflight 45 lunar landing 45 Chandrayaan 45 Soyuz 44 Qian 44 Three Gorges Project 44 Russian Soyuz spacecraft 44 Soyuz TMA 44 Space Shuttle Endeavour 44 Soyuz spacecraft 44 Hohhot 44 orbiting laboratory 44 Russian cosmonaut 43 Russian cosmonauts 43 Astronaut 43 Space Station 43 Daniel Tani 43 NASA astronaut 43 People Liberation 43 Wu Dawei 43 Isro 43 Foale 43 ISRO 43 Shuttle Discovery 43 Zhang 43 spacewalking 43 Gao 43 unmanned spacecraft 43 Yushu 43 BAIKONUR Kazakhstan 43 Wang Yi 42 Earth orbit 42 Baikonur Cosmodrome 42 Neil Armstrong 42 JAXA 42 Jiang 42 lunar orbit 42 shuttle Discovery 42 Alexander Losyukov 42 CPPCC 42 NASA 42 Korolyov 42 Inner Mongolia 42 Alan Shepard 42 Tibet Autonomous Region 42 spacesuit 42 Space Shuttle Discovery 42 outer space 42 spacemen 42 Soyuz capsule 42 orbiting 42 space shuttle 42 lunar surface 42 SpaceShipTwo 41 Dennis Tito 41 orbited 41 Russian Soyuz capsule 41 Xia 41 Lopez Alegria 41 Chairman Mao Zedong 41 Xinhua 41 spacewalk 41 spaceman 41 Zheng 41 lunar 41 SpaceShipOne 41 Anhui Province 41 Hunan Province 41 Xu 41 Chen Hong 41 space shuttle Discovery 41 human spaceflight 41 Ilan Ramon 41 shuttle Atlantis 40 John Grunsfeld 40 orbital outpost