Hey, Kevin Costner, NASA's got your Waterworld right here.
NASA scientists now believe Saturn's giant moon, aptly named Titan, may have a vast ocean just under its frozen skin. Their reasoning? The Cassini spacecraft has detected large amounts of physical distortion on Titan during its 16-day orbit of Saturn, 30 times greater than those expected on a rocky satellite, the distortion from the ringed planet's tremendous gravitational pull has led researchers to "the almost inescapable conclusion," that there is liquid water at depth on the giant moon.
Whether life abounds in the Titanic sea is debatable though. This outer space ocean may be laced with life-discouraging ammonia, which frees trapped methane—a gas Cassini has measured in huge quantities on Titan's surface. Webbed feet or not, we can't wait for the day we get to hit the alien beach—the waves on Titan have to be huge, right?