At Saturn's south pole, the Cassini spacecraft recently spotted a bizarre anomaly. It looks like a hexagon, and measures nearly 15,000 miles (25,000 kilometers) across. Four Earths could fit inside it!
"We've never seen anything like this on any other planet. Indeed, Saturn's thick atmosphere, where circularly-shaped waves and convective cells dominate, is perhaps the last place you'd expect to see such a six-sided geometric figure, yet there it is" explained Kevin Baines, atmospheric expert and member of Cassini's visual and infrared mapping spectrometer team at NASA's Jet Propulsion Laboratory in Pasadena, California.
Thermal imagery depicts the hexagon extends about 60 miles (100 kilometers) down into the clouds.
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