vendredi 8 avril 2011

Msnbc Techonology


Giant Venus vortex changes into bizarre shapes

This image shows the polar region of Venus, at a wavelength of 3.8 microns. The arrows denote the motion of the atmosphere around a center of rotation (marked with a white dot). The center of rotation is found to be displaced on average by about 300 km from the geographic south pole.A giant vortex at the south pole of Venus is actually a shape-shifter that changes form at least once a day, at times bizarrely taking on the appearance of a giant letter "S" or the number "8," a new study reveals.
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