Astrophysicists are scientists who study the universe and its phenomena, focusing on the physical properties and behavior of celestial objects. They explore topics such as stars, galaxies, black holes, and cosmic radiation to understand how these entities form, evolve, and interact. Using advanced tools like telescopes and satellites, astrophysicists analyze data to develop theories about the universe's origins and structure. Their work often overlaps with other fields, including cosmology and planetary science, contributing to our understanding of fundamental questions about existence and the nature of space and time.