Scientists have finally identified the progeny of that supernova - an enormously dense object called a neutron star. Two instruments on the James Webb Space Telescope (JWST) that observed the supernova at infrared wavelengths spotted telltale chemical evidence involving argon and sulfur atoms indicating that a newborn neutron star is shrouded behind the debris left over from the blast, researchers said on Thursday. Such explosions can forge two different kinds of exotic compact objects: a black hole or a neutron star.