While the neutron-star merger suggested that a substantial fraction of the r-process occurs in neutron stars, it does not rule out the possibility that the r-pr

While the neutron-star merger suggested that a substantial fraction of the r-process occurs in neutron stars, it does not rule out the possibility that the r-process also occurs in supernovae (the other leading candidate). I'd be happy to wager that at least a couple percent of your wedding ring's nuclei were formed in a supernova.