You have to be careful when talking about 'ice' because any substance which is fluid in normal experience can be called ice when it freezes; water, CO2, ammonia, even oxygen and nitrogen. (frozen nitrogen could be found on Triton, apparently). So 'water ice' is probably the most accurate description of the stuff under Gl 436b's hypothetical ocean.
Last edited by eburacum45; 20-May-2007 at 12:51 PM..
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