Baryons are composite subatomic particles that make up much of the visible matter in the universe. These particles are generally composed of three quarks, distinguishing them from other fundamental particles such as leptons. The most common examples of baryons are the proton and the neutron, which are integral components of atomic nuclei. The existence and properties of baryons are fundamental to the structure of chemistry and matter as understood through particle physics. Their identification and study provide critical insight into the forces that bind matter together and the overall composition of observable celestial bodies.