Hadrons are composite particles made up of quarks, held together by the strong force. They are a fundamental part of the universe, existing in two main types: baryons, which include protons and neutrons, and mesons, which are formed from quark-antiquark pairs. Hadrons play a crucial role in the structure of atomic nuclei and the interactions that govern particle physics. The study of hadrons helps scientists understand the fundamental forces of nature and the behavior of matter at the smallest scales. Research in this field has led to significant discoveries, including insights into the Standard Model of particle physics and the existence of quarks, the building blocks of hadrons.