How the solar system’s strangest moon, Iapetus, lost its rings
One of the weirdest of the solar system’s moons is Iapetus. This is a medium-sized (1,471 km (914 miles) satellite of Saturn, orbiting about 3,561,300 km (2,213,000 miles) from the planet. Seen from the surface of Iapetus, Saturn looms about four times larger than a full Moon in Earth’s sky. Ever since its discovery by…