CAPE CANAVERAL, Florida: Astronomers have found the best evidence yet of a vast, young ocean beneath the icy exterior of Saturn's Death Star lookalike mini moon.
The French-led team analyzed changes in Mimas' orbit and rotation and reported Wednesday that a hidden ocean 12 to 18 miles (20 to 30 kilometers) beneath the frozen crust was more likely than an elongated rocky core. The scientists based their findings on observations by NASA's Cassini spacecraft, which observed Saturn and its more than 140 moons for more than a decade before diving through the ringed planet's atmosphere in 2017 and burning up.
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