Summary:

- The article discusses a new study that has found evidence of a previously unknown type of black hole that is much smaller than typical stellar-mass black holes.
- These "mini-black holes" are estimated to be only a few times the mass of the Sun, much smaller than the supermassive black holes at the centers of galaxies or the stellar-mass black holes formed by the collapse of massive stars.
- The discovery of these mini-black holes could provide important insights into the formation and evolution of black holes, as well as the nature of gravity and spacetime on the smallest scales.