NASA’s James Webb Space Telescope has found the best evidence yet for emission from a neutron star at the site of a recently observed supernova. The supernova, known as SN 1987A, was a core-collapse supernova, meaning the compacted remains at its core formed either a neutron star or a black hole. Evidence for such a […]
Some of the oddest cosmic phenomena are short but powerful flashes called fast radio bursts. Now astronomers have observed one before and after it occurred,