Weird Interior of Saturn’s Moon Makes It Wobble

"Nature is essentially allowing us to do the same thing that a child does when she shakes a wrapped gift in hopes of figuring out what's hidden inside," says Radwan Tajeddine. (NASA/JPL/SSI via Jason Major/Flickr)
"Nature is essentially allowing us to do the same thing that a child does when she shakes a wrapped gift in hopes of figuring out what's hidden inside," says Radwan Tajeddine. (NASA/JPL/SSI via Jason Major/Flickr)

A slight wobble detected in Saturn’s moon Mimas suggests its icy surface is covering either an odd-shaped rocky core or a sloshing ocean. Researchers used...

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