Photo of the Day – 18th of March 2014


Saturn’s north pole hexagon by NASA

From Wikipedia….

Ana Aguiar and others of Oxford University’s Department of Physics have theorized that the hexagon forms where there is a steep latitudinal gradient in the speed of the atmospheric winds in Saturn’s atmosphere.

Similar regular shapes were created in the laboratory when a circular tank of liquid was rotated at different speeds at its centre and periphery. The most common shape was six sided , but shapes from two to eight sided were also produced. The shapes form in an area of turbulent flow between the two different rotating fluid bodies with dissimilar speeds.


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