This complete encyclopedia contains everything you need to know about the universe, its origin and structure! The most fascinating and useful facts about space, the history and development of astronomy, a detailed description of each planet of the Solar system, useful tips for observing the starry sky, entertaining data about astronomical discoveries — and all this in one book. The information in the book is presented in an exciting and diverse way, so it will attract the interest of both any teenager and an adult. The author of the book is a professional astronomer Valentin Tsvetkov.The publication is recommended to schoolchildren as a reference guide in addition to the school curriculum. The convenient, compact format of the book will allow you to take it with you to school, for a walk and on any excursion!And this encyclopedia will be a wonderful gift for any occasion!