Question

Are black holes formed when large stars collapse?

Answer 1

I think black holes are formed when large stars collapse.

Answer 2

Yes, Black holes are formed when large stars collapses.

Lifetime of A star ( from birth → death )

• Red Dwarf → Blue Dwarf → White Dwarf.
• Yellow Dwarf (or) Main sequence star → Red Giant → Planetary Nebula → White Dwarf.
• Blue Giant (or) Blue main sequence star → White Supergiant → Type 2 Supernova → Neutron star ( of low massive ).
• Red Giant → Red Supergiant → Type 2 Supernova → Either a Massive Neutron star or a stellar class black hole.
• Red Supergiant → Red Hypergiant → Hypernova → Black hole ( stronger than stellar class black hole ).

Other deaths and ejectas.

1. If a neutron star dies out. it will collapse under it's own gravity forms a black hole ( of a stellar class ).

2. Black holes die from hawking radiation.

3. In a Hypernova explosion or Kilonova explosion ( It's a explosion when two neutron stars collides together or when a neutron star turns into black hole ). The ejectas which produces forms a solar nebula.