JWST may have detected a supernova that exploded about 11.7 billion years ago

Using the James Webb Space Telescope, astronomers detected a supernova called SN 2023aeaf that exploded about 11.7 billion years ago, when the universe was only 2 billion years old. The star, roughly 12 times the mass of our Sun, likely triggered a Type II supernova, where a massive star's core collapses. Its host galaxy appears to be young and still forming.