On Dec. 31, 2004, NASA’s Cassini spacecraft flew by Iapetus, Saturn’s third largest moon. Iapetus was discovered by the ...

Iapetus, Saturn's moon, is visible near Saturn in the early morning sky. Saturn is easily located as the brightest point of light in the Circlet of Pisces. Titan, Saturn's largest moon, is also ...

On October 25, Saturn's moon Iapetus reaches inferior conjunction, positioned 1.3′ north of Saturn and shining at approximately 11th magnitude, making it easier to observe near its parent planet.

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 ...

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 ...

The Cassini spacecraft's flyby of Saturn's moon Iapetus has revealed a bizarre geological feature in its images: a bulging ridge at its equator. Mission scientists have started to release detailed ...