Enigmatically, some landslides flow farther than normal frictional resistance allows. Cassini images of Saturn's icy moon Iapetus reveal a multitude of long-runout landslides that may have been ...

Two scientists propose an explanation for the bizarre ridge belting Saturn's moon Iapetus at the equator. At one time Iapetus itself may have had a satellite, created by a giant impact with another ...

Images returned by NASA's Cassini spacecraft cameras during a New Year's Eve flyby of Saturn's moon Iapetus (eye-APP-eh- tuss) show startling surface features that are fueling heated ...

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 ...

A massive ridge nearly encircling Saturn's moon Iapetus is likely the remains of a mini-moon destroyed by Iapetus' gravity long ago, a new study suggests. This sub-moon probably formed after a giant ...

The origin of Iapetus's Janus faces is one of the longest standing mysteries in the solar system, one that has persisted since the moon's discovery by the astronomer Giovanni Cassini in 1671. But the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The light and dark faces of Saturn's moon Iapetus create a contrast that helped to hide the ...

On October 25, 1671, Giovanni Domenico Cassini, an Italian astronomer, mathematician, astrologer and engineer, discovered Iapetus (pronounced eye-app-eh-tuss), one of Saturn’s many moons. He also ...

For centuries, people wondered how the leopard got its spots. The consensus is pretty solid that evolution played a major role. But it's only been five years since the arrival of high-resolution ...

Saturn’s third-largest moon makes our list for three good reasons. The first was obvious to Italian/French astronomer Giovanni Domenico Cassini soon after he discovered Iapetus in 1671, as it hovered ...