This isn't the first we've seen of Saturn's six-sided jet stream, but NASA's calling the GIF after the break "the first hexagon movie of its kind." The "movie" is made from a compilation of images taken by the Cassini spacecraft, and depicts a hurricane-like storm at the center of the "hexagon" that has populated the planet's north pole for decades, if not centuries. For more check out the press release at the source link below.
