extraterrestrial object

Thesaurus

Noun

1.

extraterrestrial object - a natural object existing outside the earth and outside the earth's atmosphereestraterrestrial bodynatural object - an object occurring naturally; not made by mancomet - (astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbitmeteor, meteoroid - (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmospherecosmos, macrocosm, universe, world, existence, creation - everything that exists anywhere; "they study the evolution of the universe"; "the biggest tree in existence"