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A hexagon on the ringed planet

Something has put the hex on Saturn. NASA scientists are puzzled by a giant, hexagon-shaped feature that hovers above Saturn's entire north pole. The Voyager 1 and 2 spacecraft first spotted the hexagon more than 2 decades ago. New infrared images taken by the Cassini spacecraft show that the feature has persisted and that a second, darker hexagon surrounds the brighter, previously recorded one.

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