Three-Body Problem SimulatorOrder and chaos with three stars.

Start with the famous figure-8, where three equal stars chase each other along one path, or the chaotic Pythagorean problem.
Nudge a star, watch the orbits change and export the dance as a video clip.

Figure-8 orbitChaotic encountersEnergy readout

No sign-up No upload No watermark

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Simulations and videos are made on your device.

THREE SIMPLE STEPS

How to use the Three-body problem simulator

Play the figure-8

Press Play and watch three equal stars trace the same figure-8 path.

Break the symmetry

Drag a star or the tip of its velocity arrow a little and see how quickly the motion turns chaotic.

Export the dance

Export a 9:16, 1:1 or 16:9 clip with trails and sound.

WaveSpeed AI

From orbits to visuals

Teaching astronomy or making space content? Create the pictures and clips around your simulation with WaveSpeed AI.

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1,000+ AI models
Image, video and 3D
Pay as you go

$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The Gravity simulator is free.

Three-body problem simulator FAQ

What is the three-body problem?

Predicting how three masses move under each other's gravity. Unlike two bodies, there is no general formula, and most starting positions lead to chaotic motion.

What is the figure-8 solution?

A special stable orbit found in 1993 and proven in 2000, where three equal masses follow each other around one figure-8 curve forever.

What is the Pythagorean three-body problem?

Masses 3, 4 and 5 start at rest on the corners of a 3-4-5 triangle. After a series of close encounters, one is thrown out and the other two leave as a pair.

Is it free?

Yes. It is free with no sign-up and no watermark, and it runs entirely in your browser.

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