voyager

noun

1. one of a series of U.S. space probes that obtained scientific information while flying by the planets Jupiter, Saturn, and Uranus.

noun

1. either of two US spacecraft that studied the outer solar system; Voyager 1 visited Jupiter (1979) and Saturn (1980), Voyager 2 visited Jupiter (1979) and Saturn (1981) and made the first flyby of Uranus (1986) and Neptune (1989)