Six: 3007 AD

BLACKWORLD (Reference: Morgan's New Revised Catalogue of Stars, Planets, Astrogational Benchmarks, and Spatial Phenomena, edition of 3007): Sole planet of white dwarf A257-23. Uniface body. Unique in that it is the only such planet colonized by mankind. A small population houses itself in seven domed cities, each essentially a corporate state. Economically important as a transport nexus and rich source of power metals. Major industry, mining. Major export, rare elements. Population, chiefly of negroid stock, of First Expansion origins. The name, however, comes from the fact that life is confined to Darkside. Major tourist attraction, the Thunder Mountains on the western terminator, where slight perturbations in the slow planetary rotation result in tremendous tectonic activity due to heat expansion and contraction.