Isu

The Isu (known to the races of the modern Milky Way as the Precursors) are an ancient and highly-advanced species whose existence predates even the most primitive life on Earth by several million years. They were indirectly responsible for the propagation of the human species across the breadth of the galaxy.
== History ==
==== The Makers of Man ====
During Earth's Early Pleistocene period, Isu scientists abducted a sizeable breeding population of Homo ergaster from the planet, re-settling them on an Earth-like world in the Large Magellanic Cloud as part of a large scale experiment in accelerated evolution. The planet was placed within a time dilation field, forcing the transplanted Homo ergaster to prematurely evolve into what would later be called Homo sapiens. These humans – known to the other spacefaring races of their era as the "tau'ri" – eventually spread into the stars, forging an empire that would ultimately rival that of their makers.