What causes neutrons stars to form?

Answer 1

when a supernova occurs and the star is destroyed but if some how the nucleus survives and its mass is 1.4 solar masses then the nucleus started to shrink under its own gravity then the next stable state is neutron star.

Answer 2

Neutron stars form when a massive star runs out of fuel and undergoes a supernova explosion. During the explosion, the core of the star collapses under its own gravity, leading to extreme compression of atomic nuclei into neutrons. This results in a super dense neutron star with a strong gravitational pull.

Answer 3

Neutron stars form when a massive star runs out of fuel in its core, causing the core to collapse. Most of the mass of the star is blown away in a massive explosion called a supernova, but the core is left behind as an extremely dense remnant.