In article ,
jacob navia wrote:
James Nicoll wrote:

In article .com,
Eric Sadoyama wrote:

Aha. Titan does have an underground ocean. Or at least, it *could* have
one, deep and cold and dark and maybe 15% ammonia. By comparison,
household ammonia cleaners are 5%-10% ammonia.
(http://news.bbc.co.uk/2/hi/science/nature/4196261.stm)



At least one paper I've read said that the subsurface ocean
would be somewhat acidic, although this would be no barrier to life
as we know it. The relative lack of energy inputs is the real limit
on life in that sea.

I think I was wrong on this. The PH of the ammonia/water
ocean seems to be estimated at around 10-12, so it is basic, not
acidic.

What do you know about the geothermical energy being released
by gravitational stresses of Titan/Saturn ?

We can measure the amount heat being radiated by Titan,
we know how much sunlight falls on it and from those two facts
get a pretty good idea of the amount of energy being supplied
from other sources.
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