Synonyms and related words :
air lane, altitude peak, aphelion, apogee, astronomical longitude, automatic control, autumnal equinox, beat, blast-off, burn, burnout, ceiling, celestial equator, celestial longitude, celestial meridian, circle, circuit, colures, course, descent, ecliptic, end of burning, equator, equinoctial, equinoctial circle, equinoctial colure, equinox, flight, flight path, galactic longitude, geocentric longitude, geodetic longitude, great circle, heliocentric longitude, ignition, impact, itinerary, launch, lift-off, line, longitude, meridian, orbit, path, perigee, perihelion, period, primrose path, road, rocket launching, round, route, run, sea lane, shoot, shortcut, shot, small circle, solstitial colure, tour, track, trade route, traject, trajet, velocity peak, vernal equinox, walk, zodiac, zone