The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Simple Fictitious Solar Systems.

This simulation and its associated activities will help students understand how to construct a Copernican model of a solar system from observational data.

This simulation and its associated activities will help student understand how to construct a Ptolemaic model of a solar system from observational data.

This simulation and its associated activities will help student understand how to construct a Ptolemaic model of a solar system from observational data.