Are heavy r-process elements produced only in neutron star mergers? One year after gravitational wave detection GW170817

The r-process occurs in neutron star mergers. This has been confirmed by the observation of the decay of neutron rich radioactive nuclei as a kilonova light curve after the neutron star merger detected with gravitational waves GW170817. We will discuss the nucleosynthesis and kilonova light curves from different ejecta of neutron star mergers. We will address also the contribution of supernovae to the chemical history of our universe.