is the second and concluding book in the World Engines duology by Stephen Baxter . It follows the events of the first book, World Engines: Destroyer , where humanity discovers that the solar system has been artificially modified. The Story of "Creator"

The narrative picks up with protagonist and his companions stranded on Persephone II , a massive "Super-Earth" in an alternate timeline where Mars was never formed. World Engines: Creator by Stephen Baxter - SFFWorld