When Task Force Predator reached the edge of the Nyxian Gap, the transition became obvious.
Entering the Nyxian Gap was not that simple, but it wasn't difficult either.
Instead of traveling to a star system, any ship that wanted to reach the gap simply had to program the FTL drive to travel in its general direction. At some point, the spatial warping reached a point where a starship's FTL drive automatically shut down.
This condition essentially meant that any pirate vessel could easily shrug off pursuit! To any Peacekeeper outfit, the difficulty of determining the exact coordinates of the emergence point of a fleeing pirate vessel was nigh-impossible! Even a 0.01 deviation in angle could result in days or weeks worth of distance between the hunter and the hunted.
