Voyager 2

Voyager 2 is a 722 kg (1,592 lb) space probe launched by NASA on August 20, 1977 to study the outer Solar System and eventually interstellar space. It was actually launched before Voyager 1, but Voyager 1 moved faster and eventually passed it.

In 2204 the UE Congress was informed that Voyager 2 had been collected and given to the National Galactic Magazine would be placed in their future headquarters on Neptune's moon Proteus.

For more details see the Wikipedia article Voyager 2