What mechanism maintains stability during a star's main sequence life?

Answer

Hydrostatic equilibrium where outward fusion pressure balances inward gravity

The main sequence phase is defined by hydrostatic equilibrium, a perfect balance where the outward pressure generated by core fusion precisely counteracts the inward crushing force of the star's gravity.

What mechanism maintains stability during a star's main sequence life?
astronomystarstellar evolutionmain-sequencered giant