The Sun has existed for a very long time without substantial change in its appearance or behavior, so it must be in hydrostatic equilibrium. Under these conditions, which two parameters must be in balance at all points throughout the Sun's interior?

Question

Quizplus · Accepted Answer

The Sun is in hydrostatic equilibrium, which means the outward gas pressure (created by the nuclear fusion reactions at its core) balances the inward pull of gravity at every point within the Sun. This balance prevents the Sun from collapsing or expanding significantly.

The Sun Has Existed for a Very Long Time Without