Around 2 million years ago, astronomers believe, Earth's ozone layer may have been significantly damaged, leading to radiation damage to life on Earth. What is believed to be the cause of the damage?

Question

Quizplus · Accepted Answer

An OB association, which is a group of hot, massive stars, could have been close enough to Earth that a supernova within it emitted intense radiation, potentially damaging the ozone layer and exposing Earth to harmful radiation. Supernovae are known to release vast amounts of energy, including gamma rays, which can affect planetary atmospheres.

Around 2 Million Years Ago, Astronomers Believe, Earth's Ozone Layer