Computational astrophysics is a branch of astrophysics that uses numerical methods and simulations to study complex astrophysical phenomena and processes. Researchers in this field often use supercomputers to model and simulate astronomical systems such as galaxies, stars, black holes, and the evolution of the universe. Computational astrophysics has been instrumental in our understanding of topics such as cosmology, stellar evolution, and galaxy formation. By using computer simulations, scientists can explore scenarios that may be impossible to replicate in a laboratory setting and gain insights into the behavior of celestial objects and structures.