QuoteOur spacecraft have visited rocky asteroids and icy comets to collect invaluable data about the origin of the Solar System. And the orbits of Kuiper Belt Objects--tiny worlds far from the Sun--reveal that our planetary system had a terrifically violent past, when giant planets changed their orbits, wreaking gravitational havoc. Visualizations from the Academy's award-winning planetarium show Incoming! tell the story of this ancient interplanetary transformation.
https://www.youtube.com/watch?v=yXq1i3HlumA