The rings of Saturn are either giving birth to a moon, or destroying one

In a series of photos dating back to May 2012, NASA scientists have identified a bright object at the edge of Saturn's outermost ring. Nicknamed "Peggy", the object is a kilometer across and could be a moon about to calve off the rings. Or, alternately, it could be a moon that got too close to the rings and is in the process of disintegrating.

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