This set provides an in-depth resource for readers curious about the infinite and fascinating structure of the universe. From the complex structures of galaxies to the celestial bodies traveling in the interstellar space, it offers a broad perspective. It explores many cosmological theories, from dark energy to the big bang theory, while seeking answers to the questions of how the universe formed, expanded and changed. The set explores fundamental topics about the origin of the universe, such as the Milky Way's interaction with other galaxies, the aging process of the universe, and cosmic microwave background radiation. Depths of the Cosmos is a guide for both amateur observers and professionals with a passion for astronomy, providing comprehensive information and hypotheses about the large-scale structure of the universe.