This site presents four topics and seventeen activities all related to the solar system. In this chapter students will investigate the nature of the objects in our Solar System, their behavior, and their associated phenomena. This is chapter five of the online book called Eyes on the Sky, Feet on the Ground, an exploration into astronomy as a classroom tool for learning how to theorize, experiment, and analyze data. The activities are fully illustrated and contain detailed, step-by-step instructions as well as suggested discussion topics.