The Aether Sea is huge. The earliest explorers thought they could travel from star to star but found the distances far too large and other principles working against them, still some of the Sleeper Ships were launched to hopefully hospitable destinations. The SCU, who was aware of Teleportation effects, was convinced that there was a way to traverse at faster ways and found Highspace enabling The Folk to travel to other star systems throughout the universe. The SCU was able to find a solution in 15 years. The Folk had taken to the Aether.