General relativity theory describes the macrocosm, quantum physics the microcosm. Both fields coact in a natural manner in the universe: Limitations of observation by Heisenberg‘s uncertainty relation and by the Schwarzschild radius cause smallest observable regions. These interact by gravity, perform harmonic oscillations thereby and form the local structure of space. This explains cosmic inflation and solves the flatness problem, the horizon problem, the reheating problem as well as the problem of the big bang singularity. The formation of dark matter is explained additionally. In the early universe, long-wave fundamental oscillations became effective within the global horizon. These oscillations form the global structure of space as well as the dark energy or vacuum density. This solves the fine-tuning problem. For it the three density parameters, of the vacuum, of radiation and of the dark matter, are calculated directly from the universal constants G, c and h. Moreover the polychromatic nature of the vacuum is realized, the spectrum of the dark energy is calculated and the problem of the significantly different results of the measurement of the Hubble-constant is solved. Thereby the origin of the energy is derived from the universal constants G, c und h. The theory survives two tests: it fulfills the classical limits and it is in precise accordance with observations. The latter are obtained from the cosmic microwave background and from the observation of distant galaxies. Links to other fields of knowledge enable an effective understanding. Answers to 42 frequently asked questions provide relations to basic concepts. Exercises with solutions facilitate a deepened understanding and promote the self-reliance.weiterlesen