Merrillville Community Planetarium
Bringing the Universe to the Merrillville Schools and Northwest Indiana

Smallest Black Hole

The smallest black hole discovered by a new method is only 3.3 times the mass of our Sun. The star’s size is relative to it becoming a black hole late in its life cycle. The size parameters required a star to be 5 to 15 solar masses to become a black hole. They can become larger when combined after formation.