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View Full Version : Not all the Earth’s Water Came From Comets



Fraser
2018-Nov-09, 10:00 PM
We have comets and asteroids to thank for Earth’s water, according to the most widely-held theory among scientists. But it’s not that cut-and-dried. It’s still a bit of a mystery, and a new study suggests that not all of Earth’s water was delivered to our planet that way. Hydrogen is the most abundant element in …
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