About the book: 2022 / This book will introduce you to some of the main theories of our Universe; explains briefly and in simple language how space-time, the theory of relativity, and quantum mechanics are connected; interprets the phenomenon of black holes. This book will teach you to correctly imagine our Universe, what it consists of... Of course, in this book I will not be able to explain to you exactly where the Universe came from, what will happen to it after many millions and billions of years. But I tried to at least make you understand the essence of our Universe.