Related by context. Frequent words. (Click for all words.) 66 Armadillo Aerospace 60 XCOR Aerospace 60 SpaceX 58 XCOR 57 vertical takeoff 55 Scaled Composites 54 UP Aerospace 52 Orbital Sciences 51 sub orbital 51 SpaceDev 50 Bigelow Aerospace 49 Ansari X 49 suborbital 49 SpaceShipOne 49 Orbital Sciences Corp. 49 X PRIZE 48 X Prize 48 Rocketplane 47 spaceports 47 Centennial Challenges 47 Orbital Sciences Corporation 47 scramjet 46 Launch Vehicle 46 Orion spacecraft 46 Burt Rutan 46 Dragon capsule 46 suborbital flight 46 Virgin Galactic 46 PlanetSpace 46 MOJAVE Calif. 46 Mojave Airport 45 Rutan 45 Peter Diamandis 45 Elon Musk 45 Perminov 45 robotic spacecraft 44 manned spacecraft 44 Dragon spacecraft 44 Mars Pathfinder 44 spacecrafts 44 Lunar X PRIZE 44 Space Exploration 44 SwRI 44 Lockheed Martin 44 Musk 44 Lockheed 44 Space Adventures 44 ATK Space 44 spacecraft 44 Orbital 44 X PRIZE Foundation 44 Orion capsule 43 Ares rocket 43 Edwards AFB 43 spaceflight 43 NASA Space Shuttle 43 Ariane rocket 43 EELV 43 NASA 43 lunar missions 43 Aptera 43 Aerojet 43 unmanned 43 suborbital flights 43 Roscosmos 42 Boeing Dreamliner 42 AeroVironment 42 Aircraft Industries 42 Zero Gravity 42 Atlas V 42 spaceport 42 AMRAAM 42 EDWARDS AIR FORCE BASE 42 Jet Propulsion Laboratory JPL 42 Prime Contractor 42 Space Systems Loral 42 Lockheed Martin NYSE LMT 42 Insitu 42 ULA 42 Arianespace 42 Ares IX 41 spaceflights 41 ZERO G 41 designer Burt Rutan 41 SPACEHAB 41 lunar lander 41 Northrop Grumman 41 Spaceport 41 Chromalloy 41 National Aeronautic 41 Alliant Techsystems 41 ATK 41 Crew Exploration 41 Lockheed Martin Astronautics 41 Shuttle Launch 41 DARPA 41 Dennis Tito 41 X #A 41 Ball Aerospace 40 Gulfstream G# 40 Astrotech