Astronomers believe that Jupiter’s moon Callisto is a water world

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Astronomers believe that Jupiter’s moon Callisto is a water world

Astronomers believe they have found evidence to support a 30-year-old theory that Jupiter’s moon Callisto has a saltwater ocean. Callisto is Jupiter’s second largest moon, with a diameter of 4,820km – the same as the solar system’s smallest planet, Mercury, and roughly a third that of Earth. Callisto is one of the 4 Galilean satellites – so called because these 4 moons were discovered by Galileo Galilei in 1610. They were the first moons ever ob…

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Callisto: Jupiter’s moon might be hiding a huge ocean

Callisto, one of Jupiter’s largest moons, looks like a boring, crater-filled world. It doesn’t seem to have much going on compared to some of Jupiter’s other moons, like Europa. However, in the 1990s, NASA’s Galileo spacecraft found something surprising: Callisto might have a hidden ocean beneath its icy surface. Scientists detected strange magnetic signals near […] The post Callisto: Jupiter’s moon might be hiding a huge ocean appeared first on…

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Around Jupiter they orbit nothing less than 95 moons: Calisto is one of them. We met her when in the 1990s, NASA's special Galileo probe set out to discover its secrets and found something strange: this jovian moon seemed to react to the changing magnetic field of its planet. In other words: knowing that salt water can lead electricity, scientists suspected that the world could have a layer of liquid ocean in the depths.