Nuclear astrophysics is a research area at the interface of nuclear physics and astrophysics that investigates how nuclear processes govern the origin, evolution, and observable properties of cosmic objects and matter. It focuses on nuclear reaction rates, decay schemes, and equation-of-state properties under astrophysical conditions, and applies them to models of stellar structure, nucleosynthesis, supernovae, compact objects, and the early universe. The field integrates laboratory measurements, theoretical nuclear structure and reaction calculations, and astronomical observations to constrain reaction networks and to interpret elemental and isotopic abundances, energy generation, and neutrino and gravitational-wave signals in astrophysical environments.
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