Which Voyager spacecraft visited Uranus and Neptune?

Voyager 2 is the spacecraft that visited both Uranus and Neptune. Its route through the outer Solar System was designed to take advantage of a rare planetary alignment and gravity assists, allowing one probe to continue beyond Jupiter and Saturn.

Voyager 2 flew past Uranus on January 24, 1986, coming within about 81,500 kilometers of the planet’s cloud tops. It discovered 11 previously unknown moons, examined Uranus’s rings, and revealed a strongly tilted magnetic environment. The spacecraft then continued toward Neptune, reaching its closest approach on August 25, 1989.

At Neptune, Voyager 2 discovered new rings and moons and took the first close-up images of the planet and its moon Triton. It remains the only spacecraft to have visited either Uranus or Neptune. A common mix-up is Voyager 1: that probe visited Jupiter and Saturn, while Voyager 2 completed the famous four-planet grand tour.