NASA'S Cassini Finds Probable Subsurface Ocean on Saturn Moon
06/28/2012 12:00 AM EDT
Researchers saw a large amount of squeezing and stretching as the moon orbited Saturn. They deduced that if Titan were composed entirely of stiff rock, the gravitational attraction of Saturn would cause bulges, or solid "tides," on the moon only 3 feet (1 meter) in height.
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