Earth cyclones and Venusian vortices

Scientists have spotted an S-shaped feature in the center of the vortices on Venus that looks familiar — because they've seen it in tropical cyclones on Earth. Researchers from the United States and Europe spotted the feature using NASA's Pioneer Venus Orbiter and The European Space Agency's Venus Express. Their new discovery confirms that massive, swirling wind patterns have much in common where they have been found — on Venus, Saturn and Earth."