Seeing the sky filled with stars at night is one of the most visually stunning and thought-provoking sights on the planet. There is something about the twinkling of the universe that begs us to take a moment and consider some of the most profound mysteries of the universe. A Brief History of Time will contribute to the illumination of these mysteries by revealing the principles that govern the cosmos. Because it is written in understandable terms, it will assist even those who are not scientifically inclined in understanding why the cosmos exists, how it came to be, and what the future will look like. You will also learn about odd phenomena like as black holes, which are a kind of vacuum that draws everything (or nearly everything) toward them. Even more importantly, you will learn the mysteries of time itself, since these notes offer the answers to queries such as "how quickly is time passing?" as well as "how do we know it's moving forward?"