On Sept. 17, 1789, the British astronomer William Herschel discovered Saturn's "Death Star" moon, Mimas. [‘On This Day in Space’ Video Series on Space.com] Of course, "Star Wars" wasn't a thing at the ...
The icy Saturn moon Mimas may be a "stealth" ocean world, according to new research. "In the waning days of NASA's Cassini mission to Saturn, the spacecraft identified a curious libration, or ...
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