Retrograde Orbit

At the outer edge of the solar system, on the mining planet Tisa, Flint and her mother live in the colony of Swift Springs. Displaced by a nuclear event, Flint’s family settled there two generations ago to become miners. Soon Flint will be old enough to begin her apprenticeship at the refinery. But is the home that her family has built for her enough, or will a mysterious, irradiated planet pull her away from them?