Ancient xenon isotopes reveal atmospheric changes from geomagnetic field weakening, suggesting evolutionary impacts on planetary habitability.
Ancient xenon isotopes reveal that a temporary weakening of Earth’s magnetic field enhanced hydrogen escape to prime the atmosphere for oxygenation, before its recovery locked in the Great Oxidation Event. More than simple shields, magnetic fields may act as an active filter for atmospheric evolution, with consequences for planetary habitability and the divergent histories of Earth and Mars.
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Y. L. Wei (2026) studied this question.
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