Dione is the fourth-largest moon of Saturn, with a diameter of 698 miles (1,123 kilometers). It is the 15th largest moon in the solar system. Dione orbits around Saturn once every 2.7 Earth-days ...

Also like our own Moon, Dione is tidally locked to Saturn, meaning it always has the same face pointed to its parent planet. Dione also exhibits resonance with two close-by moons: Enceladus and Mimas, ...

Saturn's moon Dione crosses the face of the ringed planet in an image obtained on May 21, 2015. An icy moon of Saturn hangs against the face of its giant parent planet in a breathtaking new image ...

Here’s how it works. The icy Saturn moon Dione appears to have an underground ocean of liquid water, just like two of its more famous neighbors, a new study suggests. This huge ocean is probably ...