This interactive is used in Chapter 7. This Interactive will allow students to build their own solar system by placing planets of different masses at different locations and watching these systems evolve. Choose from a Sun and Earth system; our solar system up to Saturn; or 2,000 randomly selected systems. Watch how a Hot Jupiter interacts with a Mercury-sized planet, or how Saturn interacts with a Mars-sized planet. What will happen? Check out the Interactive and see for yourself.