The South Polar Vortex of Venus changes its shape day to day. The upper panels of the figure show the upper clouds at 39 miles (63 km) above the surface, and the lower panels present the vortex as observed in the lower clouds at 26 miles (42 km) altitude level. // ESA/VIRTIS/INAF-IASF/Obs. de Paris-LESIA/Universidad del País Vasco (I. Garate-Lopez)