Far out in the Saturn system, a small world refuses to behave. Iapetus spins in a way that should not be so stable, wears a mountain range like a planetary seam, and presents a face that looks as if ...

“We see landslides everywhere in the solar system,” said Kelsi Singer from Washington University in St. Louis, Missouri, “but Saturn’s icy moon Iapetus has more giant landslides than any body other ...

Saturn’s distinctive moon Iapetus is cryogenically frozen in the equivalent of its teenage years. The moon has retained the youthful figure and bulging waistline it sported more than three billion ...

Looking for a sky event this week? Check out our full Sky This Week column. January 13: Ganymede's turn to transit Ganymede is transiting Jupiter with its shadow as January 14 opens subsequently in ...

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 ...