THE inner workings of certain supermassive black holes may be less hostile than we realise, possibly with stable regions where life and even planets could exist. Charged and rotating black holes have a complex internal structure that allow photons (light particles) and particles of much greater magnitude to safely orbit the central singularity, according to Russian cosmologist Vyacheslav Dokuchaev at Moscows Institute for Nuclear Research of the Russian Academy of Sciences. Gravitational tides within the central singularity are so powerful that even light gets sucked in. But Dokuchaev has carefully studied the dynamics of surrounding stable periodic planetary orbits, that neither terminate at the central singularity nor exit the black hole. Here, the existence domain is rather roomy, creating space for life in the spinning black hearts of galactic nuclei. In his paper, Dokuchaev demonstrates that living inside the eternal black holes is possible in principle, if these black holes are rotating or charged and massive enough for weakening the tidal forces and radiation of gravitational waves to acceptable level. TET He proposes that Type III advanced civilizations on the Kardashev scalecivilizations that have achieved mastery of the resources of their galaxycould inhabit such black hole interiors. We hypothesize that the advanced civilizations may live safely inside the supermassive black holes in the galactic nuclei being invisible from the outside, writes Dokuchaev in his study. The naked central singularity illuminates the orbiting internal planets and provides the energy supply for life supporting, he adds. Some additional highlighting during the night time comes from eternally circulating photons. TET