The term that describes the study of the universe is "cosmology." This branch of astronomy explores the origins, evolution, and eventual fate of the universe. Cosmologists investigate phenomena such as the Big Bang, cosmic microwave background radiation, the expansion of space, and the large-scale structure of the cosmos. By integrating principles from physics and mathematics, cosmology seeks to answer fundamental questions about the nature of time, space, and the universe itself. It combines observational data with theoretical models to enhance our understanding of the universe's workings.