The discovery of a new type of supernova illuminates a medieval mystery

Scientists have discovered the first convincing evidence for a new type of stellar explosion -- an electron-capture supernova. While they have been theorized for 40 years, real-world examples have been elusive. They are thought to arise from the explosions of massive super-asymptotic giant branch (SAGB) stars, for which there has also been scant evidence.

from Latest Science News -- ScienceDaily https://ift.tt/3wXoka5