Saturn's south pole reveals a colossal decagonal cloud pattern
Astronomers using the Hubble Space Telescope have detected a giant ten‑sided cloud pattern circling Saturn's south pole—a rare decagonal feature about 167,820 kilometers across that likely formed from a meandering atmospheric jet and waves. Its rotation takes about 800 days, and scientists are studying its evolution and 3D structure to understand how it compares with Saturn's long‑standing north‑polar hexagon.