The finding expands researchers’ understanding of just how massive a black hole can be. "We now know that black holes that form from dying stars can be much larger than we had realized," Prestwich says.
This artist's conception shows the biggest stellar-mass black hole, upper left, which weighs 24 to 33 times as much as the Sun. It is pulling gas from a companion Wolf-Rayet star lower right. Aurore Simonnet/Sonoma State University/NASA.