Pluto is about 4.5 to 4.6 billion years old. It formed early in the history of the solar system as part of the Kuiper Belt, a disc-like zone beyond Neptune filled with icy bodies that coalesced around that time
. This age corresponds to the general formation period of the solar system. While Pluto was discovered in 1930, making its observational history nearly a century old, the dwarf planet itself has existed since the early solar system formation period billions of years ago
