It looks like Saturn's tiny moon Mimas, aka the Death Star Moon, may have an ocean. Will it join ranks with Europa, Enceladus, and others?
Data from the Cassini mission keeps fuelling discoveries. The latest discovery is that Saturn’s tiny moon Mimas may have an internal ocean. If it does, the moon joins a growing list of natural satellites in our Solar System that may harbour liquid water under their surfaces.
and it’s available online at Science Direct. The authors are Alyssa Rose Rhodena and Matthew E. Walker. Rhodena is an expert in the geophysics of icy satellites at the Southwest Research Institute, and Walker is an Associate Research Scientist at the Planetary Science Institute. “Because the surface of Mimas is heavily cratered, we thought it was just a frozen block of ice,” Rhoden said. “IWOWs, such as Enceladus and Europa, tend to be fractured and show other signs of geologic activity. Turns out, Mimas’ surface was tricking us, and our new understanding has greatly expanded the definition of a potentially habitable world in our solar system and beyond.”
This is still a preliminary discovery, and a visit from a spacecraft can confirm it. It needn’t visit Mimas itself; a visit to any IWOW would clarify the critical issue of heat flow against ice shell thickness. From the press release: “The team also found that the heat flow from the surface was very sensitive to the thickness of the ice shell, something a spacecraft could verify.
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