Saturn is best known for its spectacular rings, but the rings are closely connected to the surrounding Saturnian environment. One of the sources of material in this system is the small icy moon Enceladus. During the Cassini mission, spectacular plumes were discovered erupting from fractures near Enceladus' south pole, known as the tiger stripes. These plumes consist predominantly of water vapor, accounting for about 90% of the ejected mass, with the remaining ~10% in the form of icy dust grains. The plume material is continuously released into space, and because of Enceladus' low escape velocity, much of it escapes the moon and spreads throughout Saturn's magnetosphere.
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