Voyager 2: The Eveready Bunny of Spacecrafts. It just keeps going and going.
Voyager 2 was the first spacecraft to study the four giant planets in the Solar System. It was launched in 1977 from Earth and continues to make new discoveries through its extended interstellar mission.
The five instruments that are still functioning on the spacecraft after 45 years of extended mission have been prolonged by a system hack.
Source:
