WHAT IS SECTOR 73?In the 25th century, after humans have colonized the moon and Mars and established outposts in the asteroid belt, a particular breed of men and women have evolved the industrial art of asteroid harvesting. Dragging chunks of primordial rock and ice to smelters circling Earth and Mars, these rocks have become the principal source of raw materials for all the old and new world's metals, fuels, water and breathable air.One dragger,...