Past Neptune, the solar system is not empty. A broad, flat zone called the Kuiper Belt wraps around the Sun like a cosmic donut. It holds thousands of icy bodies left over from planet formation. Most are small, dark, and frozen. This region is far colder than anywhere on Earth. Sunlight there is dim and weak. Yet these distant worlds tell a huge story about how our solar neighborhood was built.
🍩 SHAPE
The Kuiper Belt is a wide ring, not a solid wall. Icy objects orbit in a flat disk beyond Neptune.