🌌 3D N-Body Simulator

Units: M☉ · AU · years → G = 4π² · Reference plane = XY, +Z = north

Preset

Bodies

Speed dt

Accuracy

Softening ε

Verlet is symplectic: energy oscillates but never drifts. Watch the bottom graph — if the drift line climbs above 10⁻⁴, raise Accuracy or ε.

Camera

Trail length

Body size

🖱 Drag = orbit · wheel/pinch = zoom · right-drag = pan · click a body to focus it. Keys: Space run/pause, R reset, F fit, G graphs.

📈 Conservation telemetry