Saturn's decagon
Saturn's decagon Saturn, as seen by the NASA/ESA Hubble Space Telescope, with a 10-sided shape forming in the clouds around its south pole. NASA, ESA, STScI, A. Sánchez-Lavega (University of the Basque Country), A. Simon (NASA-GSFC), M. Wong (UC Berkeley); Image Processing: A. Pagan (STScI)