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)
Voyager in American English
(ˈvɔiədʒər)
noun
one of a series of U.S. space probes that obtained scientific information while flying by the planets Jupiter, Saturn, and Uranus