The book is truly unusual for Simmons. It is marketed as science fiction, but in reality, it is not quite what one might expect. The astronauts in the story experience "phases of gravity" as they attempt to return to a normal life on earth. They have reached the infinite, and yet, the question remains: where do they go from here? The options seem limited to divorce, suicide, self-destruction, and alcoholism. The struggling astronaut encounters former comrades who are also trying to lead normal lives, but it seems like an impossible task. How does the astronaut find himself in this difficult situation?
The book ends in a rather mystical way, with humanity ascending to the stars in ways that they have not previously seen. It leaves the reader with a sense of wonder and speculation about what lies beyond. Overall, the book offers a unique perspective on the challenges faced by astronauts and the mysteries of the universe.