'Assassin' supernova discovered that is 570bn times brighter than sun

Astronomers find brightest star explosion ever, located 3.8bn light-years away, which is more luminous than entire Milky Way Astronomers have discovered the brightest star explosion ever, a super supernova that easily outshines our entire Milky Way.An international team revealed “the most powerful supernova observed in human history” Thursday in the latest Science journal. The astronomers used a network of telescopes around the world to spot the record-breaking supernova last year. C