Rosetta samples suggest Earth’s water is not from comets

December 11, 2014 12:57 PM

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The European Space Agency’s Rosetta mission made history when it delivered the Philae lander to the surface of comet 67P/Churyumov–Gerasimenko last month. The landing didn’t go perfectly to plan, but a great deal of science was still done by Philae. With all that going on, it can be easy to forget there’s still the Rosetta probe in orbit of the comet, and it has its own science to do.

The ESA has released some findings from Rosetta, and it may change how we understand the formation of our home planet. According to this data, Earth’s water probably didn’t come from comets like 67P as many had thought.

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