Hexagon on Saturn: A Mysterious Storm the Size of Two Planets (3 photos)
An anomalous atmospheric formation rages at Saturn's north pole—a gigantic hexagonal vortex reaching 30,000 kilometers across. The scale is staggering: two Earth-sized planets could easily fit inside the "hexagon." First recorded in 1980, this powerful storm has persisted for decades, remaining one of the most inexplicable meteorological phenomena in the solar system. 
