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Jupiter's Moon Callisto Probably Has an Ocean Under Its Surface
If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's second-largest moon has more impact craters on its surface than any other ...
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Jupiter's moon Callisto is very likely an ocean world
More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...