And then was there thought for a long time to be a giant impact upon the Earth that resulted in the moon. (1) Or later, perhaps not. (2) Indeed, the Earth was in fact very different from today. There were no oceans and no oxygen. Then was the Earth bombarded by left over planetoids and other early material. The left-over heat and bombardment caused the planet to be fully molten. During this stage, the ‘iron catastrophe,” did cause the heavier elements to sink, whereas the lighter elements did float. Although the early atmosphere would have been composed of hydrogen and helium, the winds of the sun and the heat of the Earth, would cause this to be taken away. And then as the radius of the Earth did increase, temperatures did plummet. And as the crust did solidify and form, so did the atmosphere. Between 4 and 3.8 billion years ago, did the Earth undergo a heavy bombardment of asteroids providing water, which condensed into clouds. And then did life begin to originate… (Continued in Part VI).
Posted on August 17, 2008 by TCS