Wave Forms

Cast shadows reveal some interesting structure in the waves sent up by little Daphnis in this image, taken by the Cassini spacecraft on June 26, 2009. Daphnis orbits Saturn within the 26-mile-wide Keeler gap in the A ring. Its gravity disrupts the edges of the gap, carving scalloped edges in the ring material and also,…

Wave Rider

  4.3-mile-wide Daphnis races along its track, the 26-mile-wide Keeler Gap in Saturn’s A ring, stirring up sinuous edge waves in the ring material behind and before it. Not only does the shepherd moon cast a small shadow onto the ring, but so do the crests of the waves it’s creating! It’s a wonderful little…