...may explain how mimics arrived here and how at least one survived in the vacuum inside the Kletka for so long. They can move to an adjacent 'dimensional bubble' where time passes much more slowly, shifting back with the appropriate stimulus (e.g. prey). From the mimic's perspective, a six million year journey to our solar system (in the form of an iron meteor) might only take a few seconds. These things are the ultimate trap door spiders.