One of the most bizarre weather patterns known has been photographed at Saturn, where astronomers have spotted a huge, six-sided feature circling the north pole. It's nearly 15,000 miles across, and you could fit four earth's inside it easily.
The honeycomb-like feature has been seen before. NASA's Voyager 1 and 2 spacecraft imaged it more than two decades ago. Now, having spotted it with the Cassini spacecraft, scientists conclude it is a long-lasting oddity.
Researchers at the Technical University of Denmark have spun buckets of water, and photographed geometrical whirlpools developing. As the buckets are spun up, central holes develop that are first elliptical, then triangular, then square, pentagonal, and hexagonal.
Fascinating, but nobody has figured out the science behind it yet. We know so little about how things really work.
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