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How did the moon Callisto get its name?

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Callisto orbits just beyond Jupiter's main radiation belt and is the outermost of the Galilean moons – the four largest moons of Jupiter: Io, Europa, Ganymede and ... Facts about Callisto. The name of the moon comes from Greek mythology. Callisto was a nymph who had an affair with the king of the gods, Zeus. read more

Luckily for scientists, an upcoming mission called JUICE (Jupiter Icy Moon Explorer) will focus on three icy Jupiter moons, including Callisto, to get more information about its environment. JUICE is expected to arrive in 2030. read more

If you mean, by whom: Simon Marius, who discovered the four largest moons of Jupiter just after Galilei (and independent from him). Galilei got the fame as first discoverer, but his idea to credit his benefactors was not well received. read more

Callisto was discovered in 1610 by Galileo Galilei. At 4821 km in diameter, Callisto has about 99% the diameter of the planet Mercury but only about a third of its mass. It is the fourth Galilean moon of Jupiter by distance, with an orbital radius of about 1 883 000 km. read more

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