The Spacetime Simulation Engine is a real-time, GPU-accelerated 3D physics platform built with React Three Fiber and Three.js. It lets users visualize and manipulate phenomena like black holes, gravitational lensing, wormholes, and time dilation with precision and interactivity. Designed for scientists, educators, and futurists, it merges real physics equations with modular rendering—empowering exploration of relativity, causality, and spacetime curvature like never before.