Tuesday, April 16, 2013

Saturn's Ring Rain

A new study finds that water ice particles regularly erode from Saturn's legendary rings, make their way to the planet, and fall into the atmosphere, producing a kind of rain over particular areas of Saturn.

The process seems not to be controlled simply by gravity.  Rather, the eroded particles travel along lines of magnetic force governed by Saturn's magnetic field.  The process does not involve much water, but it is a mechanism by which the ring system can evolve over time.

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