The new volume of the encyclopedia is devoted to one of the most fascinating novelties - astronomy. Since ancient times, people have wondered what Bcelennaya is? For centuries, scientists have tried to unravel the mysteries of the universe, and only in the twentieth century, thanks to flights into space, people came closer to understanding the processes occurring in Bcelennaya, of which our planet Earth is also a part . How did the stars and planets originate? What is the Milky Way, and what is beyond it? What is the structure of the galaxy? What does the Sun consist of? Why does the day on the Earth change at night, and winter in summer? Are we alone in Bcelennaya?These and many other questions are covered in a fascinating and accessible form in the Book of Bcelennaya , by leading Russian scientists-astronomers. We present you the "Large series of knowledge", which included sixteen encyclopedias . Publishers did not try to fit all the knowledge into one book, as it is impossible. They avoided excessive differentiation of knowledge on volumes, as this would imply a scientific level of coverage of the material. They tried to find a middle ground, so that these encyclopedias constituted a "Great Series of Knowledge" for the inquisitive reader. The peculiarity of the book is the arrangement of the material that allows the reader to quickly find the necessary information . The publication contains rich illustrative, cartographic and reference material. For senior students, students and all inquisitive readers.