Red Giants and White Dwarfs

Red Giants And White Dwarfs

Stars go through different stages in their life cycles. After spending millions or even billions of years as a main sequence star, they begin to change. When a star exhausts its hydrogen fuel, it expands into a large, cooler red giant that glows reddish. Eventually, the outer layers drift away, ...

What happens when a Main sequence star runs out of hydrogen in its core? Let’s explore that.

When all the hydrogen in a star is used up, the inward force of gravity becomes prominent compared to the outward force created by fusion.

This squeezes the core, and its temperature and pressure increase so much that its helium begins to fus...