The existence of "portals" is precisely because of the turbulent belt's "spatial instability."
The Investigation Corps updates the map of the Frontier every year.
Some regions, though already fully explored, still have survey teams dispatched there regularly, to redraw the charts.
That is because many items left behind by the Starship Civilization in the Old World drift through the fractured space of the turbulent belt, wandering aimlessly; this year, an expedition may find a certain ruin completely empty, yet two years later in that same place they might discover a terrifying sealed object.
By the same reasoning…
This corpse, with extremely high probability, drifted here through a temporary portal in the turbulent belt.
"Judging from the coagulation of the blood, we can infer that this person has been dead for less than twelve hours."
