Build an app in which a dynamic observational 3D universe is displayed, where all celestial bodies move in real time within their respective bounds. The user should be able to easily view any part of this dynamic observational universe from any angle and every view.This system needs: Real-time rendering Accurate orbital physics Astronomical databases (NASA, JPL, SIMBAD, Gaia) Responsive UI (multi-device support) Interaction (rotate, zoom, pan) Time controls (fast-forward, rewind) Optional AR/VR support