NASA’s recent focus on returning to the Moon offers a valuable opportunity to generate enthusiasm and increase public understanding of space science. This presentation will describe a plan we’ve developed for a museum exhibit that builds on this opportunity. It includes a hands-on scale model that makes the key concepts of orbital dynamics accessible to the general public. The core of our exhibit is a 3D-printed contour map of the gravitational potential produced by the Earth-Moon system, on which visitors can place marbles and roll them with varying speeds and directions. This experience will provide an intuitive understanding of what happens to a satellite that is launched from Earth, and an entry point for exploring a rich variety of questions. For example: Under what conditions does a satellite go into Earth orbit, into lunar orbit, or fall into one of the two inherently stable orbital locations (Lagrangian points), where it will simply sit static relative to Earth and Moon? What happens to a satellite that passes near one of the other Lagrangian points, where the forces are balanced but the equilibrium is unstable? What is required to launch a real satellite to these locations? What existing and planned NASA spacecraft are in orbit at these various orbital locations and why? What deep understanding can we gain about motion and gravity by studying these situations? The primary aim of the exhibit is to spark curiosity and further exploration by making the concepts concrete and accessible.