Physics · N-body gravity
Gravity sandbox
Free N-body gravity simulator in the browser. Orbit, binary, or cluster presets; tweak G; tap to add masses with trails. Educational physics playground.
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Recommended next simulator
After Gravity sandbox, try Pendulum
Swing a pendulum, change length and damping, drag to set the angle. See period and energy in a brass clockwork lab.
Educational simulation in your browser. No account needed.