FEWER BODIES. REAL GRAVITY.
Binary disc encounter
768 bodies, each contributing mass. Glow and trails add depth without adding gravitational work.
Real gravity, a little optical theatre
Every displayed body participates in this planar N-body simulation. A deterministic Barnes–Hut quadtree approximates distant mass; a kick–drift–kick leapfrog integrator evolves positions and velocities. Bodies can pull, scatter and form tidal structures instead of following prescribed orbits.
Soft luminous sprites and short position-history trails make a modest population look rich. They add no mass or hidden simulated stars. The 3D-looking inclination is a projection of a 2D physical system, in normalized units with G = 1.
Physics targets 60 fixed steps per second at 1× speed. Under load it slows down rather than increasing the integration step or changing the population. This browser view is separate from the native GPU evidence programme.