Voyager 2

- Launched on August 20, 1977


- only space craft to visit Jupiter,Saturn,Uranus, and Neptune

- RTGs still operating

- currently exploring the edge of the solar system

- voyager 2 targeted Jupiter,Saturn,Uranus, and Neptune before joining its sister probe on their interstellar mission.

- is the only spacecraft to study all four of the solar systems giant planets at close range .