Moments of Wonder: Enceladus and Dione


NASA's shot of Enceladus and Dione

NASA’s¬†Cassini-Huygens mission to Saturn continues to amaze. Check out this shot of its contrasting moons, Enceladus and Dione.

The surface of the brighter, smaller Enceladus receives a constant rain of ice grains from its south polar jets. Its surface, therefore, is white like fallen snow, while ¬†bright, Dione’s older surface appears to have darkened as it gathered dust and radiation damage in a process scientists call “space weathering.”

Sixty-two moons orbit Saturn. Only 53 of them are named.

Check out out NASA’s Cassini page for more information on the mission and a bevy of breathtaking photos.


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