NASA Explore The Universe | The Voyager 2 spacecraft, launched by NASA in 1977, is the only spacecraft to have visited four planets: Jupiter (1979), Saturn (1981), Uranus (1986),... | Facebook
The Voyager 2 spacecraft, launched by NASA in 1977, is the only spacecraft to have visited four planets: Jupiter (1979), Saturn (1981), Uranus (1986), and Neptune (1989).
