The nucleus is the dense region within the atom that consists of protons and neutrons. A negatively-charged cloud of electrons surrounds it. Most of the mass of the atom is located in the nucleus. The nuclear force is responsible for the binding of the nucleus. The branch of physics that is concerned with the study of the nucleus and its constituents, as well as the forces acting on it, is called nuclear physics. It has led to many significant discoveries and innovations, such as the development of nuclear power, nuclear medicine, magnetic resonance imaging, radiocarbon dating, etc. Besides these, it is used in astrophysics to explain fusion in stars, stellar evolution and nucleosynthesis. The areas of valley of stability, and fusion and fission reactions are of crucial importance in this field. This book strives to provide a fair idea about nuclear physics to help develop a better understanding of the latest advances within the field. Different approaches, evaluations, methodologies and advanced studies on nuclear physics have been included in this book. It includes contributions of experts and scientists, which will provide innovative insights into this domain.