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A still from a movie from Cassini, made possible only as Saturn's north pole emerged from winter darkness, showing new details of a jet stream that follows a hexagon-shaped path and has long puzzled scientists.

From Science Daily:

Science Daily (Dec. 10, 2009) — After waiting years for the sun to illuminate Saturn's north pole again, cameras aboard NASA's Cassini spacecraft have captured the most detailed images yet of the intriguing hexagon shape crowning the planet.

The new images of the hexagon, whose shape is the path of a jet stream flowing around the north pole, reveal concentric circles, curlicues, walls and streamers not seen in previous images. Images and the three-frame animation are available at http://www.nasa.gov/cassini, http://saturn.jpl.nasa.gov and http://ciclops.org.

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