Astronomers have detected a giant ten-sided figure in the atmosphere of Saturn, according to a report from DW.com published on September 3, 2026. The discovery centers on a rotating decagonal structure found in the planet's southern polar region.
The shape was identified within Saturn's ammonia clouds, as detailed by multiple outlets covering the finding. Reports from El Informador and The Objective describe the structure as a decagon-shaped wave or formation encircling the south pole. La Gaceta characterized the discovery as a massive geometric mystery in the same area.
The finding adds a new layer to what scientists know about Saturn's atmospheric behavior. The planet is already famous for a hexagonal storm at its north pole, a long-studied feature. According to latinus.us, researchers involved in the work referred to the new observation as an intriguing atmospheric mystery, noting that the ammonia clouds have formed this rotating decagon.
DW.com reports that the structure is notable for its size and its geometric regularity. The ten-sided pattern appears to be a distinct atmospheric phenomenon, separate from the previously known northern hexagon. The rotation of the decagon suggests it is tied to dynamic processes within Saturn's cloud layers, though the exact mechanisms driving its formation remain under investigation.
The discovery was made through observational data, with scientists analyzing cloud patterns in the planet's southern hemisphere. The reports do not specify which telescope or spacecraft provided the imagery, nor do they name the lead researchers involved.
What to watch next: Further analysis may clarify how the decagon interacts with Saturn's jet streams and whether similar polygonal patterns exist at other latitudes on the planet.
