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Scientists discover 10-sided atmospheric structure at Saturn's south pole

Study reveals decagon's dynamic behavior and contrast with northern hexagon

The research, published in Science Advances, shows the southern decagon is actively migrating eastward with jet stream speeds of 400-420 km/h (250 mph), faster than the northern hexagon's 320-354 km/h. The decagon's 10 corners oscillate every 32 days, causing it to behave like a meandering wave penetrating multiple atmospheric layers, unlike the fixed northern hexagon.

Study reveals decagon's dynamic behavior and contrast with northern hexagon
universetoday.com

“We've never seen anything quite like this in Saturn's southern hemisphere. The northern hexagon has been there every time we looked for more than 40 years. This feature is different—it appears to be strengthening.”

Dr. Amy Simon

Dr. Amy Simon Senior Scientist for Planetary Atmospheres Research at NASA's Goddard Space Flight Center, OPAL principal investigatorNASA Goddard Space Flight Center Research institutionInternational research team Study authors

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