Wobbling of a Saturn moon hints at what lies beneath
Thursday, October 16, 2014 - 14:00
in Astronomy & Space
Using instruments aboard the Cassini spacecraft to measure the wobbles of Mimas, the closest of Saturn's regular moons, a Cornell University astronomer publishing in Science, Oct. 17, has inferred that this small moon's icy surface cloaks either a rugby ball-shaped rocky core or a sloshing sub-surface ocean.