“Where did all the water on Earth came from? This is a particular problem for planetary scientists because the Earth simply should not have the amount of water that it does. The Earth is relatively close to the Sun, and water, a volatile, should have been expelled from the early inner solar system before the Earth formed. As such, the Earth should really be a much drier planet. So where did all the water that is so crucial to the biosphere of this planet originate?
Up until recently the leading theory was the notion that the oceans were deposited by comets impacting the newly formed Earth This bombardment occurred over a billion years (and might also explain how life appeared on Earth so early in its geo-history). Recent data from comets has overturned this possibility. The problem is that the isotopic ratios of terrestrial water and cometary ice are quite different." U-M.com
Up until recently the leading theory was the notion that the oceans were deposited by comets impacting the newly formed Earth This bombardment occurred over a billion years (and might also explain how life appeared on Earth so early in its geo-history). Recent data from comets has overturned this possibility. The problem is that the isotopic ratios of terrestrial water and cometary ice are quite different." U-M.com
And the earth was without form, and void;
and darkness was upon the face of
the deep.
And the Spirit of God moved upon the face of the waters.
Genesis 1:2