Recent research suggests that Mars once had a significant atmosphere and abundant water, with lakes and rivers. But over billions of years, solar winds stripped away much of the atmosphere, leading to extreme dryness and uninhabitable conditions.
Curiosity collected carbonate from Gale Crater, which was formed by an asteroid impact approximately 3.5-3.8 billion years ago. Analysis of these carbonates showed significant water evaporation processes; This suggests that Mars may have experienced “habitability cycles.” Isotope ratios in carbonates indicate a climate in which liquid water existed only temporarily, possibly under salty and icy conditions.
Although current results indicate that Mars is uninhabitable, the possibility of life underground is still a promising possibility.
Source: Ferra
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