Plutoshine

On Pluto, a team led by the terraformer Lucian is building a giant mirror to bring light and warmth to the surface. After a tragedy leaves the colony's founder in a coma, Lucian starts teaching sign language to Nou, a girl who has not spoken since. What she tells him could change the future of the project and the solar system, and there may be a saboteur among them. A hard science fiction debut.