write a book that describes the story of an astronaut who goes into space with his spaceship, which has a fault that requires the astronaut to go on a spacewalk to repair it, when he is repairing it a piece of space debris causes the line with which it is connected to the ship to come loose, when it comes loose the astronaut is left floating in the void of space for years, until he is rescued by an alien ship who has the technology to bring him back to life, they take him to their world or planet, where there is a genocidal and terror dictatorship which the astronaut helps to free becoming a hero.