This book requires no prior knowledge of astronomy. It begins with simple and carefully explained introductions, gradually launching you into exploring the components of the night sky: stars, galaxies, nebulae, and other celestial bodies, in a style that combines easy presentation with the magic of amazing stories. To achieve this goal, it divides the sky into segments, each of which is devoted to a separate chapter. In doing so, it devotes several additional chapters to answering, in accessible detail, profound questions that may be on your mind about this dazzling universe above, such as: How do scientists know the distances to the most distant stars? How do they determine the characteristics of these luminous objects, such as their mass, size, temperature, and even age? What about those planets orbiting other stars? How do they know if they are rocky like our Earth, gaseous, or perhaps raining sand? And how do they discover the earliest secrets of the universe and what happened billions of years ago?