In an accessible form, both for a not very prepared reader and for professionals in physics, the book investigates all the shortcomings of the most famous and most mysterious physical theory of Einstein "Special theory of relativity" and proposes a new theory for consideration for broad masses. The new universal theory of relativity discovers new physical phenomena in inertial moving systems presents in this paper. The new theory opens up new laws of motion for both solids and electromagnetic waves. In addition, it presents a new theory of physical processes occurring in the system at rest...