The whole system is one shader, and your graphics driver has to build it. On a slow machine that takes up to a minute — after which every frame is ray-traced in full.
Drag to orbit · Scroll to zoom · Click a body · WASD fly · H interface · R reset · Space auto-orbit · F fullscreen
– FPS · –
Parameters
Body sizes are artistic; distances are the square root of the real ones — at true scale Mercury would be a single pixel and Neptune thirty Earth orbits out, far outside the frame.