Here is the actual core program that will be presented to your class. This is the basic program outline that the Roth Planetarium Interns follow. Put most simply, Astronomy is the Study of light, gravity, and energy. Introduction - Star Topics 1. Stars - emit their own light because they are hot.
Planets shine by reflected light and circle stars.
Galaxy - a large collection of stars. The Milky Way galaxy contains 100 million stars. It is 80,000 light years across. The sun travels around the center of the galaxy in 200 million years. Use light globe for brightness demo.