The scientific study of the universe is called cosmology. This branch of astronomy focuses on understanding the origins, structure, evolution, and eventual fate of the universe. Cosmologists explore concepts such as the Big Bang theory, dark matter, dark energy, and the cosmic microwave background radiation, which provides clues about the early universe. This field combines physics, astronomy, and mathematics to address fundamental questions about the universe's nature and the laws that govern it. Discoveries in cosmology not only deepen our understanding of the universe but also challenge our perceptions of time, space, and existence.