hannorein/rebound

Health v2 · maintenance only

Adoption not part of the score

1122 stars · 267 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

REBOUND is an open-source N-body integration library for simulating the gravitational motion of particles such as stars, planets, moons, and dust. It is written in C99 with an easy-to-use Python module, offering many symplectic and high-accuracy integrators, collision detection, and real-time 3D visualization.

Use cases

• simulate the solar system over billions of years
• integrate planetary system dynamics with close encounters
• model orbits of planets, moons, and dust particles
• run collisional granular dynamics simulations
• couple user-defined ODEs like tides and spin to N-body dynamics
• teach orbital mechanics with runnable browser examples
• fast long-term integrations of planetary systems with AVX512

When to choose

• you need a flexible, dependency-free N-body integrator in C or Python
• you want symplectic or high-accuracy adaptive integrators for gravitational dynamics
• you need collision detection and granular dynamics support
• you want pip-installable scientific simulation with visualization

When to avoid

• you need general-purpose molecular dynamics or non-gravitational force simulation
• you need a GUI-first simulation tool rather than a library
• your problem involves electromagnetism or fluid dynamics rather than gravity

Facets

library · maturity active

simulation graphics sdk astronomy simulation windows python c cross-platform n-body astrophysics orbital-mechanics symplectic-integrators planetary-dynamics gravitational-dynamics physics scientific-computing linux macos

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