Astronomers Report Brightest-Ever, Three-Year Cosmic Explosion

"Astronomers have spotted the largest cosmic explosion ever witnessed, and it's 10 times brighter than any known exploding star, or supernova," reports CNN:The brightness of the explosion, called AT2021lwx, has lasted for three years, while most supernovas are only bright for a few months. The event, still being detected by telescopes, occurred nearly 8 billion light-years away from Earth when the universe was about 6 billion years old. The luminosity of the explosion is also three times brighte