What is the physical mechanism that initially resists the crushing gravitational pull on the iron core before it is overcome?

Answer

Electron degeneracy pressure

Electron degeneracy pressure is a quantum mechanical stabilizing force where electrons resist being squeezed into the same volume; however, the immense gravity of a massive star's iron core eventually overwhelms this resistance.

What is the physical mechanism that initially resists the crushing gravitational pull on the iron core before it is overcome?

#Videos

A Detailed Breakdown of Core Collapse Supernovae - YouTube

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