Two-tone moon
Dark dust coats half of a Saturnian moon named Iapetus, as seen in this photo captured by the Cassini orbiter in September 2007. In the Oct. 8 issue of Nature, researchers suggested that the source of the dust was a nearly invisible ring of debris kicked off from another moon, Phoebe. The ring starts about 3.7 million miles away from Saturn and extends outward another 7.4 million miles.
Dark dust coats half of a Saturnian moon named Iapetus, as seen in this photo captured by the Cassini orbiter in September 2007. In the Oct. 8 issue of Nature, researchers suggested that the source of the dust was a nearly invisible ring of debris kicked off from another moon, Phoebe. The ring starts about 3.7 million miles away from Saturn and extends outward another 7.4 million miles.
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