My Solar System

Build and simulate your own multi-body solar system

The N-body gravitational problem involves calculating the motion of multiple masses under mutual gravitational attraction. For 2 bodies, exact analytical solutions exist (elliptical orbits). For 3+ bodies, the problem is generally chaotic — tiny changes in initial conditions lead to wildly different outcomes over time. Real solar systems are stabilized by large mass ratios (Sun >> planets) and widely spaced orbits.