Hydrogen Burning

Hydrogen burning is the fusion of four hydrogen nuclei (protons) into a single helium nucleus (two protons and neutrons.) The process is a series of reactions. The type of reactions depend on the mass of a star and its core temperature and density. In our Sun, the process is a proton-proton chain. In more massive stars, the C-N-O cycle (Carbon-Nitrogen-Oxygen) serves to fuse hydrogen into helium.

See also: Fusion, Helium Burning, Hydrogen.

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Subjects: Physics