The mass of a heavier black hole that collided with a lighter one 2 billion lightyears away was found to be right inside, or just above, the pair instability mass gap
The mass of a heavier black hole that collided with a lighter one 2 billion lightyears away was found to be right inside, or just above, the pair instability mass gap The mass of a heavier black hole that collided with a lighter one 2 billion lightyears away was found to be right inside, or just above, the pair instability mass gap