Saturn’s rings and tilt might have come from one missing moon

The hypothesis could explain some things about the planet once thought to be unrelated

Saturn from an angle of roughly 45 degrees from the plane defined by its rings. The sunlight casts a shadow of the planet across its rings.

Saturn’s iconic rings are a mystery. So is its tilted orbit. A single missing moon could explain both.

Space Science Institute, JPL-Caltech/NASA

A single, doomed moon could clear up a couple of mysteries about Saturn.