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 ...

If the researchers are correct, 700-mile-wide (1,120 kilometers) Dione would be the third Saturn moon known to harbor a subsurface ocean, after giant Titan and geyser-spouting Enceladus.

(Space.com) A NASA spacecraft circling Saturn has discovered a wispy oxygen atmosphere on the ringed planet's icy moon Dione, but you wouldn't want to live there. For one thing, you wouldn't be ...

Images from Cassini's final up-close flyby of Saturn's moon Dione should start arriving in a few days. In the meantime, here's a glimpse of other lunar views the robotic space craft ...

A third Saturn moon may have a subsurface ocean with potential for life, researchers say. Using gravity data from the Cassini probe, researchers at the Royal Observatory of Belgium say Dione joins ...

A NASA spacecraft circling Saturn has discovered a wispy oxygen atmosphere on the ringed planet's icy moon Dione, but you wouldn't want to live there. For one thing, you wouldn't be able to ...

Dione may not be as famous as Titan or Enceladus, but this Saturnian moon is quietly fascinating. Beneath its icy surface lie strange wispy terrains and ancient scars from unknown forces.

As the spacecraft nears the end of its life, it probes the secrets of Saturn's icy moon Dione for a final time.

The closest ever approach to Dione was in 2011, when the US, European and Italian space agency mission swept just 100km above the moon. Dione has a diameter of 1,122km, making it the fourth ...

Saturn's moon, Dione, imaged by NASA's Cassini in Feb 2008. (Credit: NASA) We recently explored Saturn’s walnut-shaped moon, Iapetus, to include its two-toned surface features and equatorial ridge.

The closest ever approach to Dione was in 2011, when the US, European and Italian space agency mission swept just 100km above the moon. Dione has a diameter of 1,122km, making it the fourth ...