I think the problem lies in the great pressure found at those depths. The enormous pressure would supposedly stop this liquid from penetrating that deep. I may be wrong though.

Yea your probably right, I just thought of that and didnt think it would hurt to post it .

robertcd and Rock Hunter

Both your explinations are great, but neither of them cover the abundance of hydrocarbons found on Titan and other heavenly bodies. How would they become there?

For sake of argument how do we know the hydrocarbons are the same there? You probably have a good explination but Im stupid and dont know haha...maybe a satillite checked it..somehow? Maybe theyre different types of molecule or whatever youd call them. I dont know Im just typing at this point Im gonna stop now