Stellar physics, also known as astrophysics, is the study of stars and their properties, evolution, and behavior. Scientists in this field study various aspects of stars, including their composition, temperature, size, luminosity, and lifespan. They also study how stars form, interact with each other, and eventually die. Stellar physics covers a broad range of topics, from the internal processes of stars to their impact on the surrounding space environment. This field of research helps us better understand the fundamental processes that govern the universe and the formation of galaxies.