🛰️ Orbital Debris Collision Rate, Kessler Cascade and Satellite Density Lab

A 24-shell model of low Earth orbit (300-1500 km) with thousands of GPU-propagated Keplerian objects, kinetic-theory collision rates, drag lifetimes, post-mission disposal and the cascade equation dN/dt = L - N/tau + kN^2. An experiment finds the critical launch rate where a shell runs away and compares it with the analytic fixed point.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install