The Ragged Astronauts

Land and Overland—twin worlds a few thousand miles apart. On Land, humanity faces a threat to its very survival—an airborne species, the ptertha, has declared war on humankind and is actively hunting for victims. The only hope lies in migration. Through space to Overland. By balloon. The Ragged Astronauts—first volume in an epic adventure filled with memorable characters, intense action, engaging notions, exotic locales.