Xalata Orbit meets danger head-on when she leaves a troubled Earth behind to live with her father on LunarBase and attend the Hydroponics Institute of the Moon's Central Air Facility. At first, life on the Moon seems dull compared with her home planet, but it is not long before she and her new friend, Melody Fret, are fighting a shadowy enemy for their freedom and battling a conspiracy that could destroy the Earth and all its inhabitants. What horrors are lurking in the derelict Habitat 14 on Farside? Why does the slimy Mr Fark take such an interest in the girls' security? What's the huge secret that Xalata's father carries with him? How can anyone stop an indestructible creature that looks set to destroy the LunarBase? And who are the Asttarians and why do they want to change humans' lives for ever? Xalata Orbit and Melody Fret - The Hammer of Asttar is a science fiction thriller for teenagers and young adults, set in a distant future where disease and terrorism have forced communities to live in secure isolation. The alternative? Populate the planets. But, someone's out to stop people leaving Earth.