The stunning discovery of a 3.5 keV X-ray peak observed in the Perseus Cluster by NASA’s Chandra X-ray Observatory and by the XMM- Newton that has no match to any known atomic transition was recently announced by the Harvard-Smithsonian Center for Astrophysics and NASA. The 3.5 keV feature assigned to dark matter of unknown identity by the discoverers matches a strong hydrino transition and further confirms hydrinos as the identity of dark matter.