Taming Gravitational Chaos: N-Body Simulations and Predictive Astrophysics with REBOUND

The N-Body problem represents one of astrophysics' greatest computational challenges, where systems of three or more bodies become chaotic and unstable. REBOUND emerges as the essential tool for precise simulations, using specialized symplectic integrators to preserve physical conservation laws that standard methods fail to maintain. This guide demonstrates how Python developers can unlock realistic gravitational modeling and long-term orbital predictions.