United Aerospace Corporation was the sole competition to the earliest form of the Guild in the space race of the XXIst century. While the Guild was formed under the auspices of the Star Gods, the UAC was mostly local Earth initiative, an alliance of private and national corporations. Unlike the Guild, who were interested mostly in prospective Hellerium mining and happy to use the Stellar Empire's solutions, the UAC was actively developing new technologies. It was finally disgraced and closed down in the early 2090s after a long decline and a series of incidents involving inter-dimensional travel, the most known one in the Iron Tribe area. The UAC was the swan song of the Old Earth civilization, and only after its fall the current sad state of affairs began in the earnest.