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694 Ancient asteroid craters may have sparked Earth’s oxygen-producing life

ScienceDaily
ScienceDaily · 05/22/2026 02:47 EDT

A hidden crater in South Korea may hold clues to one of the biggest turning points in Earth’s history: the rise of oxygen. Scientists discovered fossil-like stromatolites — layered structures built by ancient microbes — inside the Hapcheon impact crater, suggesting that asteroid strikes may have created warm, mineral-rich lakes where early oxygen-producing life could flourish.

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