Tiny Black Hole Found

NASA scientists have recently determined the size of the smallest black hole yet measured. The object is about 15 miles across, and weighs in at 3.5 solar masses. For comparison, the biggest black holes, at the centers of huge galaxies, contain billions of solar masses.

Theoretical physicists think that a star must have at least 1.7 ro 2.2 solar masses to have the gravitational power to collapse all the way to black hole status, so studying this one, so close to the lower limit, will hopefully give them insight into the behavior and the creation of the smallest of their kind.