General Discussion What's Hidden Inside One of Saturn's Moons?

Shawn Hopkins submitted a new blog post:

What's Hidden Inside One of Saturn's Moons?

One of Saturn's moons has a secret, and scientists are trying to figure out what it is.

A Cornell University astronomer has been studying measurements of the wobble of Saturn's small, icy moon Mimas taken by the Cassini spacecraft, and he and his team have determined that under all that ice there must be either an irregular "rugby-ball-shaped" rocky core or an underground ocean sloshing about.

"After carefully examining Mimas, we found it librates -- that is, it subtly wobbles -- around...

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