ClipsEarth's water brewed at home, not in space
First Clipped on Sep. 27, 2007
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Where did the Earth's oceans come from? Most scientists think they came from water-rich asteroids and comets raining down on the planet in its youth.
But now planetary scientists in Japan suggest the oceans were actually "home-grown" – they may have formed because the young Earth had a thick blanket of hydrogen, which reacted with oxides in the Earth's mantle to form lakes and seas.
