I built this to explore General Relativity through GPGPU programming. This simulator numerically integrates the geodesic equations using an RK4 scheme. I've documented the math and build process in the README. I'd love to hear feedback on the CUDA implementation.
Video Demo (AI Narration): https://youtu.be/BUqQJPbZieQ
Source: https://github.com/anwoy/MyCudaProject