Physics - Astrophysics - Black holes - The Physics of Black Holes

4 sections. Section 1 'Formation': When a star >~25M☉ dies: core collapse → nothing stops it. Electron degeneracy overcome → neutron degeneracy overcome → collapse continues to singularity. Event horizon forms at Schwarzschild radius Rₛ = 2GM/c². Also: supermassive BHs (10⁶-10¹⁰ M☉) at galaxy center