9 years ago
Rosetta Scientists Say Earth's Water Didn't Come From Comets
Scientists have long been curious just where Earth's water originally came from, and comets have seemed like an ideal candidate. Not only are these icy wanderers mostly made of water, but we also know that a vast number of them shelled the Earth shortly after the new planet cooled. However, a new study out today from the Rosetta comet mission has thrown a wrench into this theory. In the journal Science, the researchers detail the chemical makeup of comet...
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