A perfectly spherical planet made entirely of transparent...

A perfectly spherical planet made entirely of transparent liquid glass, floating in deep space above a black reflective surface. Inside the sphere are swirling spiral galaxies, glowing nebulae, tiny stars, and rotating cosmic dust clouds suspended as though frozen in time. The outer shell is perfectly smooth with flawless glass refraction, chromatic aberration, and realistic optical distortion. The nearby sun creates brilliant highlights and colorful caustics across the surface. Wisps of blue and violet space fog surround the planet while distant stars softly illuminate the scene. Ultra-photorealistic astrophotography combined with luxury product photography, physically accurate lighting, ray-traced reflections, volumetric lighting, cinematic composition, 8K.