How do black hols form?

Answer 1

Black holes are believed to most commonly be formed at the end of a massive star's life, when its fuel is exhausted and it no longer has the outward pressure to prevent collapse under the effects of its own gravity. They also might be formed during some particularly energetic particle collisions, perhaps those of cosmic rays, although those would be microscopic and very short-lived. They also were likely formed around the time of the big bang because of the initial conditions of the universe (so-called primordial black holes).

Answer 2

Black holes form when a massive star runs out of nuclear fuel and collapses under its own gravity. This collapse causes the star's core to shrink rapidly, creating a gravitational pull so strong that not even light can escape. The result is a region of spacetime with such intense gravitational force that it forms a singularity at its center, surrounded by an event horizon known as the black hole.