Supernovas May Have Triggered Deadly Ancient Climate Shifts, and They Could Happen Again

New research links nearby supernovas to drastic shifts in Earth’s ancient climate. These cosmic explosions may have eroded the ozone layer, triggered global cooling, and even caused mass extinctions. Tree ring data supports the theory, raising concerns that future stellar events, like the expected Betelgeuse explosion, could again pose serious atmospheric threats to our planet.

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