Why is most of the information about the matter that went into forming the black hole lost ?
In common units , formula_59 formula_60 formula_61 So , for instance , a 1 - second - lived black hole has a mass of 2.28 × 105 kg , equivalent to an energy of 2.05 × 1022 J that could be released by 5 × 106 megatons of TNT.