  Our understanding of the history of the solar system has undergone a
revolution in recent years, owing to new theoretical insights into the origin
of Pluto and the discovery of the Kuiper belt and its rich dynamical structure.
The emerging picture of dramatic orbital migration of the planets driven by
interaction with the primordial Kuiper belt is thought to have produced the
final solar system architecture that we live in today. This paper gives a brief
summary of this new view of our solar system's history, and reviews the
astronomical evidence in the resonant populations of the Kuiper belt.
