The branch of astronomy, which deals with the origin and evolution of the universe is known as cosmology. There are three major divisions within cosmology, namely, physical cosmology, religious cosmology and philosophical cosmology. Physical cosmology focuses on the physical origins along with the evolution of the universe. The basis for religious cosmology is a body of different mythological, religious and esoteric literature. Philosophical cosmology is dedicated to the philosophical contemplation of the universe as a totality. Since the scope of cosmology extends to disciplines outside of science, theories in cosmology can be either scientific or non-scientific in nature. This book attempts to understand the multiple branches that fall under the discipline of cosmology and how such concepts have practical applications. The topics included in this book on cosmology are of utmost significance and bound to provide incredible insights to readers. It will serve as a valuable source of reference for graduate and postgraduate students.