8 years, 5 months ago

NASA’s Cassini finds subsurface ocean lying deep within Saturn's moon Dione

A subsurface ocean lies deep within Saturn's moon Dione, offering a long lived habitable zone for microbial life, suggests a new data from the Cassini mission. Two other moons of Saturn, Titan and Enceladus, are already known to hide global oceans beneath their icy crusts, but the new study suggests an ocean exists on Dione as well. Researchers from the Royal Observatory of Belgium show gravity data from recent Cassini flybys can be explained if Dione's crust floats on an ocean located 100 kilometres below the surface. "As an additional principle, we assumed that the icy crust can stand only the minimum amount of tension or compression necessary to maintain surface landforms," said Mikael Beuthe, lead author of the study.

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