In fact, black holes, artificially recreated in the laboratory, emit a form of I radiation predicted 40 years ago by the theorist Stephen Hawking. This was demonstrated by the experiment by Jeff Steinhauer, of the Haifa Institute of Technology in Israel, published in Nature physics.
Black holes are objects with such a great force of gravity that nothing can escape; according to Hawking, however, over time they would lose small amounts of energy in the form of radiation, so much so as to 'evaporate' in billions of years.
In short, black holes would emit one small amount of energy. Radiation of this type has never been seen so far but Steinhauer's experiment may have proved its existence. More studies and experiments will be needed, but apparently Hawking was right, already 40 years ago.