This close-up image of Saturn and its rings was captured by NASA's Cassini spacecraft. It shows part of the planet's southern hemisphere along with a section of the rings. Looking outward from the planet, the C, B, and A rings are visible. This image shows natural color, although the rings have been brightened slightly relative to the planet. This image shows that Saturn's rings are extremely complex and are composed of thousands of smaller ringlets. Some of the tiny gaps in the rings are caused by tony moons that orbit within the rings. They are known as shepherd moons.