On our quest to discover more about space, our solar system, and the universe, we’ve looked at what N-body simulations do, and how they can help us understand some of the forces at play in the universe. An n-body simulation in one sense is a mathematical model of a grouping of objects under the influence of a force such as gravity. The simulation we’ve constructed in the Unity game engine is that of a simple single star system with a small grouping of planets and moons.