The Metrion Expanse
This area has only been observed from a distance by the Squids. Is seems to be a barrier of metrionic radiation that is very dangerous. A ship with powerful enough shields could withstand the radiation for a while. The Squids could not explore the expanse due to thier lack of radiation protection. It is over 1500 AU square and from the scans the cloud appears to run the entire perimiter. Jumping into the cloud without knowing its contents could be very leathal as all negative space could be filled with radiation. Admiral Johnathan Ladson intends to explore the expanse to find a place to rest the human fleet and perhaps stop running and start rebuilding.