For the first time, the theory of a time machine is brought to the attention of the reader. The work sets out the principles and physical laws that allow time travel. The technology of a time machine is described, which is radically different from existing models. The author reveals the nature of time and formulates its definition. The direction of evolution, causality and time is explored. The author shows that the real cause of the present is located in the future. The future and past are physical objects. The physical content and localization of these objects are described, access paths are indicated. The book will be of interest to both specialists and a wide range of readers.