Space.com #Supernova Ashes Found in Fossils Hint at Extinction Event 18 August 2016 fborgosano Leave a comment Share: Supernova ash has been discovered in fossils that were created by bacteria on Earth, a new study finds. This finding suggests that a supernova might have played a role in an extinction event on Earth, researchers said. from Space.com ift.tt/2bvopbI Share: