apoapsis, periapsis, point of apoapsis, point of periapsis

spacecraft, orbiter, geostationary orbit, geosynchronous orbit, soyuz, astronauts, spaceward, synchronous orbit, orbital velocity, satellites, circumlunar, lander, perilune, spaceship, liftoff, perigee, cassini, space shuttle, shuttle, spacewalk, perihelion, geosynchronous, outer space, taikonaut, moon, asteroid, blastoff, ballistic trajectory, aphelion, payload, geostationary, rover, flyby, retrorockets, meteoroid, huygens, lunar, drogue parachute, cosmonauts, retrogrades, comet, interplanetary, valentina tereshkova, prograde, booster rocket, stratosphere, cosmodrome, spaceflight, launch vehicle, space capsule, asteroid belt, spacesuits, ionosphere, thruster, retroreflector, spacewoman, sols, proxima centauri, skylab, rocket, yuri gagarin, capsule, planets, spacefaring, airlock, launch pad, gyroscopes, epsilon aurigae, multistage rocket, uranus, exosphere, telescope, extravehicular, tereshkova, mesosphere, interstellar space, heat shield, saturnian, airglow, lunar module, sputnik, jovian, cosmic ray, cosmic dust, corot, oort cloud, gravitational interaction, constellation, triangulum, phobos, venusian, zero gravity, lunar excursion module, cosmos, galaxy, salyut, sextile, astrometry, selene, occultation, moonlet, heliosphere, orbits, trajectory, angle, front, satellite, sphere, order, plane, circumference, facet, i.e., leaflet, serving, arc, branch, circle, ellipse, hemisphere, km, limit, structure, coriolis, anharmonic, dimensional, nonadiabatic, results, case, climate, defect, multipole, polarization, roughness, 3-2, 3-3, 4-2, aeroelastic, barometric, bilinear, dipole

confines, distaff, expanse, front, gamut, geostationary orbit, geosynchronous orbit, horizon, internationalism, internationality, kingdom, land, lap, latitude, palette, pallet, political arena, political sphere, preserve, province, purview, realm, responsibility, retrograde, spectrum, sweep, view

annual parallax, antisatellite, aphelion, apoapsis, apogean, apogee, apojove, apollo asteroid, apolune, aposelene, arteria infraorbitalis, asat, ascending node, capture, centripetal acceleration, comet, communications satellite, descending node, ecliptic, eyebath, eyecup, eye cup, frontal eminence, geostationary, geostationary orbit, geosynchronous, geosynchronous orbit, heliocentric parallax, inclination, inclination of an orbit, inferior, inferior planet, infraorbital artery, kepler's first law, mercury program, nasofrontal vein, node, oort cloud, orbital, orbitale, orbital motion, orbital point, orbital rotation, orbit period, periapsis, perigee, perihelion, perijove, perilune, periselene, pluto, point of apoapsis, point of periapsis, retrograde, revolve, skylab, space laboratory, space platform, space station, sputnik, suborbital, superior, superior planet, superlunar, superlunary, temporal, translunar, translunary, true anomaly, variation, vena nasofrontalis

forehead, frontal bone, os frontale

bodily cavity, cavity, cavum, circle, circulate, environment, extent, path, route

ambit, area, arena, compass, domain, eye socket, field, orbital cavity, range, reach, revolve, scope, sphere