Quote:
Originally Posted by coliver
As I was speculating in my ATM thread on Darwin, perhaps a very large comet may have hit Earth when it was still a hot ball of fire and the cooling off created the atmosphere for life? Recent findings in Ocean Vents show that life can form with just water and energy? I dont know if its possible, but a comet may have been a carrier?
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When the planet is forming, there is normally a lot of water and gas from the material from what the planet formed and it is vented outside by early volcanos, thus producing the primordeal atmosphere that contains a lot of water.
But, yes, there would be less water if Earth's water was all from volcanic outgassing.
Many comets were strucking Earth when it was formed and that water remained.