Saturn moon’s hidden ocean

Researchers believe they have found evidence for a hidden ocean on Mimas, one of Saturn’s major moons. This makes Mimas a target for learning more about the origins of life in our solar system. Saturn has 146 moons orbiting it. The biggest is larger than the planet Mercury; the smallest is roughly the size of a sports arena on Earth. Mimas, which was first discovered in 1789, is one of the major moons and is about 250 miles wide. Experts used to think Mimas was mostly made out of solid ice and rock. In 2014, astronomers noticed its orbit around Saturn was wobbling. A wobbly orbit can be caused either by a core shaped like a rugby ball or a huge liquid ocean beneath the surface. At first, lots of…

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The Week Junior (UK) (Digital) - 1 Issue, 427

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