spacecraft, spaceship, orbit, space shuttle, orbiter, retrorockets, geosynchronous, outer space, shuttle, launch vehicle, orbital velocity, circumlunar, drogue parachute, valentina tereshkova, synchronous orbit, spacefaring, multistage rocket, extravehicular, retroreflector, space capsule, geosynchronous orbit, spacewoman, hypervelocity, astronauts, rocket, sputnik, perilune, earthwards, liftoff, particle beam, soyuz, hubble, lunar excursion module, blastoff, taikonaut, meteoroid, interplanetary, moon, lander, geostationary orbit, earthbound, selene, hyperspace, exosphere, geostationary, spacemen, sounding rocket, zero gravity, circularize, hypergolic, launch pad, ballistic trajectory, astronautical, earthward, jovian, suborbital, booster rocket, skylab, comet, spacesuits, asteroid, lunar crater, spaceflight, prograde, payloads, rovers, gibbous, hypersonic, airship, tiros, cosmodrome, lunar module, mooring mast, satellites, micrometeorite, epsilon aurigae, cosmonauts, proxima centauri, gimbaled, huygens, airglow, venusian, ramjet, martian, triangulum, saturnian, alan shepard, undock, eridanus, moonwalker, space station, unpowered, cosmos, icbms, scorpius, supersonic, monoplanes, orb, propulsion, skyward, micrometeoroid, dixi