Universe Today reports Underground Oceans Discovered on Titan, Saturn's moon.
"Over the course of 19 separate Cassini Titan flybys, members on the mission science team carefully established the position of 50 unique landmarks on the surface of the moon. After each flyby, they located the landmarks again, and marked their positions.
During nearly 2 years of flybys, from October 2005 to May 2007, surface features had moved from their original positions by up to 30 km (19 miles). The only way the surface could be shifting like this is if the moon's icy crust is floating atop an internal ocean.
'We believe that about 62 miles beneath the ice and organic-rich surface is an internal ocean of liquid water mixed with ammonia,' said Bryan Stiles of NASA's Jet Propulsion Laboratory (JPL) in, Pasadena, Calif."
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