The
rings of Saturn are the
most extensive planetary ring system of any planet in the Solar System. They
consist of countless small particles, ranging in size from micrometres to
metres,
that orbit about Saturn. The
ring particles are made almost entirely of water ice, with a trace component of
rocky material. There is still no consensus as to their mechanism of formation;
some features of the rings suggest a relatively recent origin, but theoretical
models indicate they are likely to have formed early in the Solar System's
history.
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