At Saturn's North Pole,




The hexagon spans nearly 25,000 kilometres – the width of two Earths – and appears to be a clearing in the clouds that extends at least 75 km below the planet's visible cloudtops.

(update: Don't miss the gif movie, you can watch the whole thing rotate.)

While at Saturn's South Pole,




Saturn's south pole also boasts a dramatic feature – a hurricane-like storm two-thirds as wide as the Earth. . . "It's amazing to see such striking differences on opposite ends of Saturn's poles," says Bob Brown, leader of the Cassini visual and infrared mapping spectrometer at the University of Arizona in Tucson, US. "At the south pole, we have what appears to be a hurricane with a giant eye, and at the north pole of Saturn we have this geometric feature, which is completely different."

Here's the video.