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Ringing in a new moon

10:45am, May 24, 2005

Last July, the Cassini spacecraft passed through a clearing in Saturn's outermost major ring and recorded a set of wavy features at the gap's edges. To explain the ripples, scientists predicted the existence of a new Saturnian moon. But, they couldn't tell for sure, because until this spring, Cassini orbited Saturn in the same plane as the rings. So, it could view them only as a pencil-thin line. In April, Cassini rose out of the plane, enabling the craft to peer down on the rings.

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