The Universe is the great mystery of existence, the alluring mystery of knowledge - the endless overcoming of the boundaries of the unknown. The first step opens up new horizons. And behind them are new secrets of the eternal, inexhaustible space. How was our Universe born? What happened before the Big Bang? What does the matter of the Universe consist of? What are black holes? How does the cycle of matter occur in the Universe? Where is the galactic center? Do parallel worlds exist? How are stars born? What are quasars, pulsars and white dwarfs? The next book in the series talks about this and much more.