Rosetta suggests Earth's water didn't come from comets

December 11, 2014 11:31 AM

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Rosetta scientists have said that Earth's water probably didn't come from comets by analyzing water vapor emanating from the comet being tailed by the spacecraft.

According to the researchers, comets Comet 67P/Churyumov-Gerasimenko like couldn't have been the source of the water in Earth's oceans, and that suggests our H2O was more probably delivered by asteroids, during a time when they were much icier than they are now.

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