Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so again, posing a threat to life.

Supernovas may have triggered life-threatening changes in ancient Earth's climate. Scientists say it could happen again

Source: space
Source Link: https://www.space.com/astronomy/supernovas-may-have-triggered-life-threatening-changes-in-ancient-earths-climate-scientists-say-it-could-happen-again