Mars Could Have Been Warm and wet, While Earth was Still a Glowing Ball of Molten Rock universetoday storybywill
To answer this question, astronomers have been trying to reconstruct what Mars’ atmosphere was like billions of years ago. A popular method used by Martian missions involves collecting samples and analyzing them for their deuterium-to-hydrogen ratios , or the number of deuterium atoms in a sample divided by the number of normal hydrogen atoms. This method allows scientists to gauge the prevalence of molecular hydrogen in Mars’ atmosphere over time, which is a powerful greenhouse gas. As Prof.
Simple life may have thrived on early Mars due to a dense, hydrogen-rich atmosphere. Credit: ESO/M. Kornmesser These oceans were stable and would have remained on the Martian surface for many eons before the atmospheric hydrogen was gradually lost to space. As Dr. Pahlevan“This key insight – that water vapor condenses and is retained on early Mars whereas molecular hydrogen does not condense and can escape – allows the model to be linked directly to measurements made by spacecraft, specifically, the Mars Science Laboratory rover Curiosity.
Curiosity rover snaps an image of the site where it took a drill sample. Credits: NASA/Jet Propulsion Laboratory, Caltech
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