Why does space have three dimensions? What would the world look like if the fundamental constants were slightly different? Is the observable universe, our metagalaxy, just a fluctuation of a superuniverse? And what will be the "final scenario"? Answers to these questions have come within the reach of modern science through the growing impact of particle physics on cosmology. Professor Rozental, astrophysicist at the world-famous Space Research Institute in Moscow, has been witnessing this development for years. With this mostly nonmathematical book he has succeeded in providing exciting insights into the micro- and macrocosm and into the science where today ends seem to meet: the cosmology of the very early universe.