Astronomers have spotted something that shouldn’t exist–a star that acts as if it’s gone supernova at least six times.
Writing in Nature, an international research team discusses the highly unusual case of iPTF14hls, first classified as a Type II-P supernova on January 8, 2015. At first, this appears to have been an open-and-shut designation (II-P supernovas are the only known phenomena that produce the spectra observed for iPTF14hls).
Source: Astronomers Find Star That Has Exploded Six Times – ExtremeTech