By Helen Briggs
Science reporter, BBC News
Saturn's moon Titan may have a deep, hidden ocean, according to data published in the journal Science.
Radar images from the Cassini-Huygens mission reinforce predictions that a reservoir of liquid water exists beneath the thick crust of ice.
If confirmed, it would mean that Titan has two of the key components for life - water and organic molecules.
Currently, three other Solar System objects are suspected of having deep oceans: Ganymede, Callisto and Europa.
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"Titan is 50% water-ice. If it is liquid, as this paper is implying some of it is, it looks as though we've got at least two of the things to initiate the chemistry that leads to life.
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more:
http://news.bbc.co.uk/2/hi/science/nature/7307584.stm