First profitable step-by-step to a self-sufficient private sector space business community in era of high launch costs. Explains role of spaceship ferry craft, spinships, asteroid miners, ascenders and translunar space. Shows how to build a space-based economic system of high revenues and low costs. Describes low cost delivery to earth from asteroid mining vessels. Reveals three habitat types necessary for self-sustaining space business. Explains how division of risk, ownership and spinship staged construction lowers costs, and finances the space trade. Explains environmentally friendly, low...