* Jupiter: It flew past Jupiter in 1979, providing close-up images of the planet, its moons, and its Great Red Spot.

* Saturn: It flew past Saturn in 1981, capturing images of its rings, moons, and atmosphere.

* Uranus: It was the first spacecraft to visit Uranus in 1986, discovering new moons and rings.

* Neptune: It flew past Neptune in 1989, providing the first close-up views of the planet and its moons.

While Voyager 2 is most famously known for its flybys of these planets, it continues its journey into interstellar space, making it the only spacecraft to have explored all four outer planets.