One day, engineers fear, the town will collapse into a fiery hole.

Chandrasekhar limit: The maximum possible mass of a stable cold star, above which it must collapse into a black hole.

It's not at all like collapsing a neuble into a black hole.

Unfortunately, the star flares into a supernova, then collapses into a black hole.

He regained and replaced all five missing soul fragments, but then collapsed into a magical "black hole" within himself.

However, Omega was thought killed in the resulting supernova, which then collapsed into a black hole.

Hence the star may have instead collapsed directly into a black hole.

He wanted to lead the science team studying the supernova as it collapsed into a black hole.

Another possibility is that a large cloud of gas directly collapsed into a black hole.

Unfortunately, the star flared, first into a supernova, and then collapsed into a black hole.