Potentially adding to the list of habitable moons
, Rhoden and her colleague Matthew Walker of the Planetary Science Institute in Tucson, Arizona, show that tiny wobbles, or “librations” in the moon’s orbit detected by NASA’s Cassini spacecraft can be explained by gravitational interactions with Saturn that produce enough heat maintain a liquid ocean beneath a thick icy shell. A model developed by the team suggests that icy shell is 14 to 20 miles thick.
The findings suggest Mimas is a “compelling target for further investigation,” Rhoden said in a release. Studying the moon’s potential to support an ocean, she says, could help researchers understand the prevalence of ocean moons at even more distant and poorly-explored locales, like Uranus.Subscribe to get the best Verge-approved tech deals of the week.Please confirm your subscription to Verge Deals via the verification email we just sent you.
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