cosmic simulation, Universe Sandbox 2, free-floating celestial bodies, interactive space game, realistic physics, galaxy creation, star system design, planet terraforming, asteroid collisions, supernova explosions, black hole simulation, gravitational lensing, nebula background, real-time space exploration, educational gameplay, ambient space music, 3D graphics, detailed textures, dynamic lighting, user-friendly interface, desktop gaming, PC platform, science fiction elements, educational tool, astrophysics simulation, virtual reality support, sandbox mode, creative freedom, universe customization, high-resolution textures, accurate scale models, physics-based effects, soft ambient lighting, wide-angle view.