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  1. Rosetta mission science results A fifth of Earth’s atmosphere is likely from comets

    Publishing date:

    June 13, 2017

    Thanks to the Rosetta space mission to 67P/Churyumov–Gerasimenko, which sought to gain new insights into how our solar system formed by analysing the comet and its behaviour as it approached the Sun, scientists have now determined that a fifth of Earth’s atmosphere likely comes from comets.

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