Related by context. Frequent words. (Click for all words.) 66 SpaceShipOne 57 SpaceX Falcon 9 57 Ansari X 57 sub orbital 55 manned spacecraft 55 Dragon capsule 55 SpaceShipTwo 54 designer Burt Rutan 54 Ares IX rocket 54 Scaled Composites 53 MOJAVE Calif. 53 spaceplane 53 spacecraft 53 XCOR Aerospace 53 Burt Rutan 52 Ariane rocket 52 scramjet 52 suborbital flight 52 UP Aerospace 51 SpaceX 51 X #A 51 spaceship 51 tycoon Richard Branson 51 suborbital space 50 Armadillo Aerospace 50 Soviet cosmonaut Yuri Gagarin 50 Soyuz rocket 50 founder Elon Musk 50 Dennis Tito 50 Orion spacecraft 50 Baikonur Kazakhstan 50 suborbital flights 50 suborbital 49 Taurus XL rocket 49 Soyuz capsule 49 Rocketplane 49 lunar orbit 48 space shuttle 48 Russian Soyuz rocket 48 Bigelow Aerospace 48 GlobalFlyer 48 Shenzhou VI 48 Shenzhou V 48 Mars Pathfinder 47 Virgin Galactic 47 Huygens probe 47 Virgin Atlantic GlobalFlyer 47 Orion capsule 47 Mojave Airport 47 Stardust spacecraft 47 XCOR 47 robotic spacecraft 47 Shenzhou VII 47 lunar orbiter 47 Rocketplane Kistler 46 X Prize 46 tourist Charles Simonyi 46 Shuttle Discovery 46 Soyuz capsule carrying 46 spacecrafts 46 lunar module 46 Kazakh steppe 46 Peter Diamandis 46 Rutan 45 hypersonic flight 45 manned spaceflight 45 spaceflight 45 Shuttle Atlantis 45 unmanned spacecraft 45 SpaceDev 45 Melvill 45 Discovery payload bay 45 Sputnik satellite 45 WhiteKnightTwo 45 orbiter 45 unmanned lunar 45 Russian Soyuz capsules 45 Space Exploration 45 Cassini Huygens 45 astronauts 45 Ares rocket 45 Discovery STS 44 orbit 44 Space Shuttle Discovery 44 Soyuz spacecraft 44 Cernan 44 Gravity Probe B 44 Orbital Sciences Corp. 44 lunar rover 44 Space Shuttle Atlantis 44 Launch Vehicle 44 Japanese astronaut Koichi 44 X #B 44 Ares IX 44 Earth orbit 44 Soyuz 44 shuttle disintegrated 44 International Space Station 44 shuttle missions 44 CubeSat 44 lunar lander