Asteroid Belt Refinement Ring AI Image Prompt

On a stable orbit in the asteroid belt, a third-generation civilization built a 200-kilometer-long "Refinement Ring" — a circular structure composed of dozens of spherical refineries linked in series. Raw asteroid material enters at one end, undergoes crushing, smelting, separation, alloying, and other processes, then exits at the other end as high-purity metal ingots, semiconductor materials, and rare elements. Inside the ring is an automated assembly line that requires almost no human intervention. The exterior is covered with cooling fins that emit dark red thermal radiation — like a glowing pearl necklace in the cold void of space.