Early Mars might have been a warm version of modern Titan and at least as promising, if not more promising, as a location for the origin of life. A new study reveals that Mars was born wet, with a dense atmosphere allowing warm-to-hot oceans for millions of years. This discovery was recently publ
might have been a warm version of modern Titan and at least as promising, if not more promising, as a location for the origin of life.
Molecular hydrogen , on the other hand, did not condense and was carried to Mars’ upper atmosphere, where it was lost to space. This finding, that water vapor condensed and was retained on early Mars but molecular hydrogen did not condense and escaped, allows the model to be directly related to measurements made by spacecraft, notably the Mars Science Laboratory rover Curiosity.
The water dissolved in these interior igneous samples have a deuterium-to-hydrogen ratio similar to that of the Earth’s oceans, indicating that the two planets started with similar D/H ratios and that their water came from the same source in the early Solar System.
France Dernières Nouvelles, France Actualités
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