IN A NUTSHELL 🌌 Researchers propose that supernovas could have caused two ancient mass extinctions on Earth. 📅 The study suggests that Earth may experience the effects of 2.5 supernovas every billion years, impacting its evolution. 🔥 The hypothesis competes with existing models that attribute mass extinctions to volcanic eruptions and other terrestrial causes. 🔍 … Continue reading 5 million years of planetary scars expose the true culprits behind Earth’s deadliest extinctions