Settler (Asimov)

In the vague period between Isaac Asimov's near-future robot stories (of the type collected in I, Robot) and his Robot novels, emigrants from Earth establish colonies on fifty worlds, the first being Aurora, the last Solaria, and the Hall of the Worlds located on Melpomenia, the nineteenth. However, sociological forces possibly related to their sparse populations and dependence on robot labor lead to the collapse of most of these worlds; their dominance is replaced by new, upstart colonies known as Settler worlds in the Milky Way galaxy. Unlike their Spacer predecessors, the Settlers detested robots, and so by the time of the Empire novels, robotics is almost an unknown science.

In the novel The Robots of Dawn, Asimov reveals why the majority of Settlers came from the short-live Earth population, as opossed to Spacer worlds, which would have used humaniform robots in the process.

After that, Comporellon was the first colonized world of the Settlers.

Roger MacBride Allen's Caliban trilogy portrays several years in the history of Inferno, a planet where Spacers recruit Settlers to rebuild the collapsing ecology via terraforming.

(In Nemesis, the main colony is one of the Fifty Settlements, a collection of orbital colonies that form a state. It should not be confused with the later Settlers that are the matter of this article, as it is possible that the Fifty Settlements were the basis for the fifty Spacer worlds in the Robot stories.)