Question

how does the star life cycle work ?

Answer 1

Answer:

A star's life cycle is determined by its mass. ... As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts.

Answer 2

Answer:

A star's life cycle is determined by its mass. ... As the main sequence star glows, hydrogen in its core is converted into helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts.