Saturn’s north-polar hexagon is a roughly 30,000-kilometer atmospheric jet stream, more than twice Earth’s width, surrounding a separate polar vortex. Voyager and Cassini observed the feature decades apart. Its extraordinary persistence remains a scientific question. The viewpoint reveal is an illustration, not a literal cloud-motion time-lapse.
Sources:
https://science.nasa.gov/mission/cassini/science/saturn/hexagon-in-motion/
https://www.jpl.nasa.gov/news/nasas-cassini-spacecraft-obtains-best-views-of-saturn-hexagon/
https://youtube.com/shorts/vmj2zMAIZaE
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