— Gizmodo
When most of us imagine what the mantle of the Earth is like, we see burning hot rock and magma (and maybe satan hanging out for good measure or something). But scientists have discovered evidence that all that rock may be hiding huge amounts of water—three times the volume of all our oceans combined.
The scientists behind the study, which was published online today in the journal Science, think they’ve figured out the answer to a question that has long plagued Earth science: Just how much water is there on Earth in total? “I think we are finally seeing evidence for a whole-Earth water cycle, which may help explain the vast amount of liquid water on the surface of our habitable planet,” said study co-author and Northwestern geophysicist Steve Jacobsen to PhysOrg. “Scientists have been looking for this missing deep water for decades.”
To my mind the question then becomes can this be applied equally to other planets, moons and asteroid’s in the solar system? if so then begin the migration outwards.