At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study suggests. Researchers at Keele University say these super-powerful blasts – caused by the death of a massive star – may have previously stripped our planet's atmosphere of its ozone,

Exploding stars in near-solar space may have triggered at least two mass extinction events in Earth’s history. A new study led by astrophysicist Alexis Quintana from the University of Alicante suggests that supernovae—the violent deaths of massive stars—could be responsible for the Late Ordovician and Late Devonian extinction events.