interstellar, intergalactic, outer space, galactic, extraterrestrial, cosmic, orbital, interdimensional, asteroid, alien, interstellar space, planetary, venusian, earthbound, astronautical, jovian, celestial, spaceward, wormhole, suborbital, lightspeed, saturnian, lunar, asteroid belt, zero gravity, antigravity, alpha centauri, astral, oort cloud, particle beam, geosynchronous, geosynchronous orbit, antarctic, hypersonic, cometary, celestial mechanics, uranian, synchronous orbit, gravitational interaction, cosmic radiation, extravehicular, orbital velocity, plutonian, aquanaut, nebular, extragalactic, cosmic ray, cybernetic, tycho brahe, malefic, taikonaut, terrestrial, proxima centauri, unpowered, ballistic trajectory, radial velocity, cosmological, robotic, astro, earthly, unmanned, epsilon aurigae, transoceanic, astrophysical, celestial sphere, polar, interstellar medium, wernher von braun, antisatellite, valentina tereshkova, yuri gagarin, exoplanet, sidereal, gluon, neptunian, cosmic rays, antiproton, undersea, oceanic, micrometeorite, intercontinental, perilune, elvish, moonlike, deep space, subatomic particle, geostationary, jules verne, atlantean, robotic telesurgery, synchronistic, ionospheric, hadron, interspecies, illimitable, einsteinian, relativity theory, weightless, cimmerian, percival lowell, space shuttle, heliocentric, manned, collisionless, chromospheric, circumstellar, hydrographic, magnetospheric, photospheric, seismic

asteroid belt, astrogate, heliopause, interplanetary dust, interplanetary medium, interstellar