The Cassini Code

The third book in the Galahad series follows Triana and her fellow teenage explorers as they venture into the outer reaches of the solar system. Now deep in the Kuiper Belt, the crew faces growing unrest as some members push to abandon the mission and return to Earth. Triana and her Council must navigate a potential mutiny while dealing with a medical emergency and dangerous space debris threatening the ship. Their only hope for survival may lie in an unexpected and terrifying source.