Exploding Star May Have Damaged Life on Earth

Reedo writes "Scientists have proposed that an ancient supernova may have damaged our ozone layer, wreaking havok on terrestrial life. Previously no one had realized that a cluster of stars could have been so close to the earth during that time. But don't worry about it happening again anytime soon. The next expected supernova is nearly 500,000 light-years away and is too far from the earth to cause any damage."