I replaced the Orbital View placeholder with ExoSim’s first actual 3D scene using React Three Fiber.The scene now has a glowing star, a small exoplanet, warm lighting, and a subtle background star field. I also learned how 3D positions use x, y, and z coordinates and experimented with the planet’s position, size, and colours. It was really satisfying to see the dashboard turn from a static mockup into an actual WebGL simulation. The planet is still stationary for now. Next I’m going to animate it across the star and start building the transit itself.