Re: Water, water everywhere...
I'm a planetary scientist but I seem to remember some that were reporting that it was very hard to model the large amount of water that Earth has on its crust compared to everything else and in particular the moon. This got particularly interesting to model if, as supposed, the early Earth/Moon got hit by a very large object splitting them into the two co-orbiting objects that are now the Earth and Moon.
There are quite a few ice asteroid type bodies out there in the solar system which would individually deliver a very large amount of additional surface water to the Earth therefore these bodies could be responsible for what we have now.
Biting the hand that feeds IT
