But it's possible to have a star that is heavier than a black hole.
Say you had a binary star system of two supermassive stars. The smaller one goes nova because it runs out of fuel first. The core starts to collapse, meanwhile the twin is scooping up the ejecta, and the star and the black hole start getting closer together...
Say you had a binary star system of two supermassive stars. The smaller one goes nova because it runs out of fuel first. The core starts to collapse, meanwhile the twin is scooping up the ejecta, and the star and the black hole start getting closer together...