Astrophysics is a branch of astronomy that focuses on the physical properties and processes of celestial bodies and the universe as a whole. This field of study seeks to understand the origins, evolution, and behavior of objects such as stars, galaxies, planets, and black holes. Astrophysicists use a combination of theoretical models, observational data, and computational simulations to study phenomena such as gravitational effects, nuclear reactions, electromagnetic radiation, and cosmic expansion. This research area plays a crucial role in advancing our understanding of the universe and our place within it.