What Are the Planets in Order From Shortest Period of Revolution to Longest?

What Are the Planets in Order From Shortest Period of Revolution to Longest?. Part of the series: Studying Planets. Kepler is a German and he comes a little bit before Galileo. Find out about the planets in order from shortest to longest period of revolution with help from the manager, lecturer and program planner at the Taylor Planetarium at the World renown Museum of the Rockies in this free video clip.