Rings and Waves
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Rings and Waves

October 5, 2013
Saturn's A ring is decorated with several kinds of waves. Here the Cassini spacecraft has captured a host of density waves, a bending wave (in the upper-right corner), and the edge waves on the edge of the Keeler gap caused by the small moon Daphnis. Daphnis itself appears as a tiny dot in the middle of the Keeler gap.

See Two Kinds of Wave for a closer look at bending and density waves and to learn more about them. For more on the edge waves caused by Daphnis, see Wave Shadows in Motion .

This view looks toward the unilluminated side of the rings from about 41 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 28, 2013.

The view was obtained at a distance of approximately 777,000 miles (1.3 million kilometers) from Daphnis and at a Sun-Daphnis-spacecraft, or phase, angle of 76 degrees. Image scale is 5 miles (8 kilometers) per pixel.

Credit: NASA/JPL-Caltech/Space Science Institute

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