On Saturn, a giant hexagonal storm rages around the north pole. The storm is so big, you could fit four Earths in it.

We photographed the storm in the very early 1980s, when the Voyager probes flew by. But for years, the storm has been hard to view because it has been tilted away from the sun, making infrared photos the only option. Now that springtime has returned to Saturn's north pole, we're looking again at this bizarre, endless, and oddly-shaped storm. Here's a brief, beautiful explanation:

See also: Jupiter's Great Red Spot.