CNN —Astronomers have uncovered additional evidence that one of Saturn’s smallest moons, Mimas, is hiding a global ocean beneath its icy surface. Discovered in 1789 by English astronomer William Herschel as a tiny dot near Saturn, Mimas was first imaged from space by the Voyager probes in 1980. Craters cover the surface of Mimas, but the largest one is 80 miles (about 130 kilometers) across and causes the moon to resemble the Death Star from the “Star Wars” films. But Saturn’s Enceladus appears younger because active geysers have contributed to resurfacing, or depositing of new, fresh material on that moon’s surface. “Mimas certainly demonstrates that moons with old surfaces can be hiding young oceans, which is pretty exciting,” Rhoden said.

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Persons: Mimas, Cassini, William Herschel, Observatoire, Dr, Valéry Lainey, Lainey, ”, Nick Cooper, Saturn, ” Lainey, “, Triton, Frédéric, ” Cooper, “ Lainey, Matija Ćuk, Alyssa Rose Rhoden, Rhoden Organizations: CNN —, Saturn, Voyager, “, Physical, Chemical Sciences, Queen Mary University of London, NASA, Clipper, SETI Institute, Southwest Research Locations: Paris, California, Colorado