Do you suggest anything I should read rather than Wiki?
I don't understand this common disparagement of Wiki: seems to me it is vastly superior to the rubbish ideas average joes runs around with in their own heads. The
late Heavy Bombardment article is an excellent source for answers to the questions you're asking.
Well, getting over my surprise at how little water is in a comet, I ran the numbers again. Using the values you supplied I get 0.12% H
20 for a comet. Would you like to take a stab at what percentage of he Earth is ocean? 0.11%. Looks like the Earth is a big ol' comet. Of course, comets keep their water on the inside while Earth has sweated it out, I'm hard put to believe the numbers reflect coincidence.
I'll have to go have a look-see at how much H
20 is held up in hydrated minerals in the crust and mantle. There's likely enough to bring Earth up to double that of a comet and disillusion me.
Ridicule is the only weapon which can be used against unintelligible propositions. Ideas must be distinct before reason can act upon them.
Thomas Jefferson