About the book: year / Many centuries, the interstellar ship "White Swan" goes from Earth to the goal of its journey - to an earth-like planet near the star of the Southern constellation. Many generations of people on board replaced each other. Finally, the ship approached the final point of its journey and entered near-planetary orbit. But pretty soon the general delight gave way to confusion. It turned out that the planet was already inhabited by some kind of technically advanced civilization...