#cosmicdisaster

Supernovae: Earth's Mass Extinction Triggers

A new study suggests that at least two mass extinction events in Earth's history were triggered by the catastrophic effects of nearby supernova explosions. These immense stellar blasts, marking the death of massive stars, could have stripped Earth's atmosphere of its ozone layer, triggered acid rain, and exposed life to lethal ultraviolet radiation. Researchers link supernovae to the late Devonian (372 million years ago) and Ordovician (445 million years ago) extinctions, highlighting the profound impact of cosmic events on Earth's biosphere. This discovery reshapes our understanding of how celestial phenomena have influenced the planet’s evolutionary history.