The book is devoted to the criticism of illusory physical theories: the theory of relativity and the theory of the expansion of the universe. It is shown that these theories negatively affect the education and worldview of a modern person. The book criticizes idealistic views on the foundations of physics, astronomy, and mathematics. Part of the book is devoted to the problems of measuring time, the other part is to analyze the negative impact of the theories of relativity and the expansion of the Universe on the basic concepts of physics: length, time, mass, space and geometry, absolute and relative. The book is useful not only for physicists, astronomers, mathematicians, but also for any person who intends to engage in science.