Rank 10 documents Voyager 2 — the identical 721.9 kg Voyager bus launched 20 August 1977 that became the only spacecraft to visit Uranus in 1986 and Neptune in 1989. The Grand Tour engineering team chained gravity assists at Jupiter, Saturn, Uranus, and Neptune, returning the Great Dark Spot images and Triton cryovolcano discoveries that remain the definitive ice-giant atlases. Voyager 2 entered interstellar space in 2018 on a slower trajectory than its twin, still transmitting instrument data decades after mission planners expected silence. Both Voyagers carry Golden Records identical in intent to Voyager 1's time capsule. Heritage Collector renders the arched ice-giant hero, vertical VOYAGER 2 sidebar, and trajectory patch exactly as the master PNG dictates.