n-body gravity

N-body gravity sandbox

• Click the void to drop a body of the selected mass.
• Drag while placing to fling it — longer drag, faster launch.
• Presets load a binary star, the figure-eight or a mini solar system.
• Time scale slows, freezes (0×) or speeds up the simulation.
• Space pauses or resumes · ? toggles this help.
• Bodies attract each other and merge on collision.