What is the Kuiper Belt?
But instead, in the history of the solar system, when Neptune formed it led to these objects not being able to get together, so it’s just this belt of material out beyond Neptune. Discovery: Shortly after Tombaugh’s discovery of Pluto, astronomers began to ponder the existence of a Trans-Neptunian population of objects in the outer Solar System. Even more exciting is the fact that surveys of other solar systems indicate that our Solar System isn’t unique. Future of the Kuiper Belt: When he initially speculated about the existence of a belt of objects beyond Neptune, Kuiper indicated that such a belt probably did not exist anymore. Credit: Lexicon/NASA Images We call it a belt, but it’s a very wide belt.