On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn’s second-largest moon. Rhea is made up of rock ...

Across the span of 1671 through 1684, Italian-French astronomer Giovanni Cassini discovered four moons of Saturn while ...

LOS ANGELES -- The international Cassini spacecraft went into safe mode this week after successfully passing over a Saturn moon that was the mysterious destination of a deep-space faring astronaut in ...

Recent data from the Cassini mission to Saturn have shed new light on the surface of the saturnian moon Iapetus, particularly the presence and movement of carbon dioxide. University of Arizona ...

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 ...

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 scientific ...

Saturn, too tiny to make out, lies at the center of a swarm of 274 moons shown her at their correct relative distances from the planet. The blue and red arcs represent the moons' orbits. Some revolve ...

The first high-resolution images of the bright side of Saturn's two-toned moon Iapetus, shown here in a false-color mosaic, reveal a pair of overlapping impact craters and a dark fuzz of presumed ...