Gravitational Collapse · Star → Black Hole
unseel.com · τ_ff ≈ √(R³/GM) · WD / NS / BH endpoints
Free-fall τ ~0.5 hr (10 M☉)
r_s = 2GM/c²
phase
Massive star
Iron core / collapse
Neutrino flash
Schwarzschild horizon
Unseel.com · Gravitational Collapse