Don't bank on it
Hi All
Mark, haven't more recent studies canned the whole idea of Europan oceans being anywhere near the surface? I remember something about crater modelling meaning the crust is at least 30 km deep. Also the whole concept of liquid oceans is in doubt because "solid-state" convection is probably too efficient for them to last. Ammonia-water oceans don't have the same issues with convecting ice. As for writing off ammonia-water biochemistry I think we know far too little to say.
Adam
