Planetary scientists, led by Juan Alday of the University of Oxford for one Martian year,
Further, the authors determined how the fractions of deuterium and hydrogen in the atmosphere fluctuated in different seasons, and also found out when water molecules got into those regions of the atmosphere from where they could get into space.
Our data show that most often moleculesordinary and heavy water is destroyed in the atmosphere of Mars and escapes into space at the moment when the planet approaches the Sun as close as possible. When Mars is at the maximum distance from the star, this does not happen.
Research text
This was due to the fact that water vapor can escape from the Martian atmosphere only if it rises a sufficiently large distance, about 40-60 km from thethe surface of the planet, where they will be decomposed by rays of light.
If water molecules disintegrate at a low altitude, then their remnants have time to combine with other substances before they reach the boundary of space.
The authors are continuing their research and hope to restore the appearance of Mars before most of the water disappeared from it.
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