Alexander Belayev is a recognized master of science fiction. In his books, he predicted inventions that during the author’s lifetime were only laughed at: underwater filming cameras, orbital stations, and spacesuits for spacewalks, radar, and unmanned aerial vehicles. History proved that the writer was right. However, in Belayev’s stories you can also find adventurous plots: his heroes embark on dangerous journeys or take part in risky experiments. For these reasons, every work by this classic remains fresh and original even nearly a century later!