Here's a simplified explanation:
* Nuclear fusion is the process that powers stars. It involves the fusing of lighter atomic nuclei (like hydrogen) into heavier ones (like helium).
* In the core of a star, intense heat and pressure force hydrogen nuclei (protons) to overcome their electrical repulsion and fuse together.
* This fusion process releases tremendous amounts of energy, which is what makes stars shine.
* The most common fusion reaction in stars is the proton-proton chain reaction, where four hydrogen nuclei (protons) combine to form one helium nucleus, releasing energy in the process.
So, in essence, hydrogen is the fuel for stars, and it is converted into helium through nuclear fusion.
