In the Center of Saturns North Polar Vortex . ... Credit Copyright: NASA / JPL-Caltech / Space Science Institute Explanation: What's happening at the north pole of Saturn? A vortex of strange and complex swirling clouds. The center of this vortex was imaged in unprecedented detail last week by the robotic Cassini spacecraft orbiting Saturn. These clouds lie at the center of the unusual hexagonal cloud system that surrounds the north pole of Saturn. ... NASA Official: Jay Norris. ...