R
robnissen
Guest
This is an interesting article discussing liquid water and ammonia on Titan.<br /><br />http://www.physorg.com/news3111.html<br /><br />"One thing that Titan could not have done during its history is to have a liquid layer that then froze over, because during the freezing process, Titan's rotation rate would have gone way, way up," Lunine said. "So either Titan has never had a liquid layer in its interior -- which is very hard to countenance, even for a pure water-ice object, because the energy of accretion would have melted water -- or that liquid layer has been maintained up until today. And the only way you maintain that liquid layer to the present is have ammonia in the mixture." <br />