Terra was abandoned by human progress a century ago, but it remains the spiritual hub for mankind and their descendants.
Two centuries ago, Mars was the pioneer venture in interplanetary settlement.
Beneath the smooth, frozen surface of the Jovian moon Europa is a liquid ocean home to colonies of aquatic demihumans.
Terra's only satellite, and the first extraterrestrial body to see human footsteps.
The only dwarf planet in the Sol System's main asteroid belt, Ceres sustains populous climate-controlled spaceports and habitation zones.