What dynamic stalemate maintains a star on the main sequence?

Answer

Inward pull of mass versus outward push from nuclear furnaces

The star achieves a dynamic stalemate between the relentless inward pull generated by its immense mass and the powerful outward push generated by the nuclear fusion occurring deep within its core.

What dynamic stalemate maintains a star on the main sequence?

#Videos

Why Is the Main Sequence a Star's Longest Stable Phase? - YouTube

stabilitystarstellar evolutionmain-sequenceastrophysics