Frozen Universe: Primordial Black Holes' Impact.

Primordial black holes may have formed in the early universe during a violent period of energy and mass shifts. As they evaporated, they released their own floods of radiation and matter, potentially leading to an extended black hole-based big bang scenario. The changes in matter and radiation density could have long-lasting impacts that we could detect even to the present day, and the evaporation of primordial black holes themselves trigger the formation of gravitational waves.