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Killer supernovae devastated life on Earth - twice
BBC Sky at Night Magazine
|May 2025
Nearby star deaths may have caused two of our planet's mass extinctions
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Exploding stars could have been responsible for ravaging our planet's atmosphere and causing two mass extinctions. The discovery comes from a recent survey of local stars, which aimed to measure how often supernovae happen in the vicinity of Earth.
A supernova occurs when a massive star runs out of fuel at the end of its life and collapses before rebounding in a huge explosion that fires out radiation and stellar material in all directions.
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