A Water Ocean on Titan for Astrobiology Magazine Moffett Field
CA (SPX) May 06, 2011 Oddities in the rotation of Saturn's
largest moon Titan might add to growing evidence that it harbors
an underground ocean, researchers suggest. Titan, which is
larger than Mercury, is the only world besides Earth known to
have liquid on its surface. Its seas, made of liquid methane
instead of water, have often led to speculation as to whether or
not they could host life. In addition to its seas on its
surface, scientists recently also discovered hints that Titan
possesses an internal ocean, one of water and ammonia. Using
radar to peer through Titan's dense atmosphere, NASA's Cassini
spacecraft found that over time, a number of prominent surface
features had shifted from their expected positions by up to 19
miles (30 kilometers), showing that the crust was moving and
suggesting that it rested on liquid. Now Cassini's gravity and
radar observations of Titan have discovered more clues that it
might have an underground sea. Tit