A PhD program in Astronomy is a research-intensive program focused on advancing scientific understanding of celestial objects, astronomical phenomena, and the evolution of the universe. It involves advanced study and original research in areas such as stars, planets, galaxies, black holes, cosmology, and high energy astrophysics, using sophisticated observational, theoretical, mathematical, and computational methods. The program emphasizes independent research, scientific data analysis, advanced modeling, and the development of new knowledge that contributes to the broader field of astronomy and astrophysics.