A few theories, though I don't know how much substance there is to them. The one I keep coming back to is that it's... something that was drawn to the world at an early stage and was corrupted with it. Or corrupted it, in turn.

Or, that it's something in the world, that draws and feeds... I was reminded of what we had encountered in the rogue base. Something that was being contained there, specifically, though no shifts could remove it. It was a long time ago, and my view of that was fleeting ... but when I think of the perversion of what we experienced, and some of the vague reports we've heard since then...