"Further understanding of photomesons will aid to understanding of nuclear physics & quantum mechanics; cosmic rays, quarks, antiquarks, photons, etc.Ultrahigh-energy nucleons, which eject from Stars, through the process of creating photo-mesons, creates Cosmic Microwave Background Radiation (CMBR), Active Galactic Nucleus (AGN jet and Gamma Ray Bursts (GRB) photo fields.