blog postsExploding stars may have caused mass extinction on Earth, study showsAug 18, 2020 11:45 am by Lois YoksoulianResearchShare on FacebookTweetEmailImages'We propose that one or more supernova explosions, about 65 light-years away from Earth, could have been responsible for the protracted loss of ozone' 359 million years ago, at the boundary between the Devonian and Carboniferous periods. Share on FacebookTweetEmail