Saturn’s hexagon is a persisting six sided cloud pattern around the north pole of the planet. It is created by a band of upper-atmospheric winds, and the sides of it are about 13,800 km (8,600 mi) long, which is longer than the Earth’s diameter. There’s a hurricane swirling within the hexagon.
(Images by the Cassini spacecraft)
I learned about Saturn’s hexagon a little while back and there’s been a good % of my brain running a secret moderate obsession about it ever since. Dude. Saturn has a HEXAGON on it.