关于这张图
The F ring shepherd Pandora is captured here by NASA Cassini spacecraft along with other well-known examples of Saturn moons shaping the rings. From the narrow F ring, to the gaps in the A ring, to the Cassini Division, Saturn's rings are a masterpiece of gravitational sculpting by the moons. Pandora (50 miles, or 81 kilometers across), along with its fellow shepherd Prometheus (53 miles, or 86 kilometers across), helps confine the F ring and keep it from spreading. This view looks toward the unilluminated side of the rings from about 31 degrees below the ringplane. The image was taken in vi…
