Four moons, spokes, and rings

Four moons, spokes, and rings
Four moons, spokes, and rings This image is just one in a 52-frame animation taken by Cassini on August 31, 2009, in which six moons and the spokes rotate through Cassini's wide-angle camera field of view. Note the long shadow cast by Mimas on the rings. NASA / JPL / SSI / Emily Lakdawalla

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