In this episode of the iDeep Dive Podcast, we explore Stephen Hawking's groundbreaking book A Brief History of Time. Unpacking its unexpected success, we discuss how Hawking updated the text to incorporate new scientific findings, particularly regarding wormholes and time travel. The episode traces the evolution of our cosmological understanding, from the geocentric models of ancient times to the revolutionary ideas introduced by Newton, Einstein, and modern-day physicists. Delving into the core concepts of the book, we examine the big bang theory, black holes, and the arrow of time. Key scientific principles like the uncertainty principle and the anthropic principle are discussed, while we also explore the tantalizing possibility of time travel. Wrapping up, we touch on the ongoing search for a unified theory of physics, considering string theory and the universe's no boundary condition.