The technology of Fourth Level Cosmic Civilization was so formidable to planetary civilizations that it seemed as if it came from the Deity itself, beyond imagination.
The entire alchemical mini-world had a mass equivalent to the combined mass of two or three geological stars; and, in less than a month, using a perfected space station as a logistical base, it had consumed all of its mass. The whole mini-world was now a void, and the curvature of space within had begun to undergo severe alterations, making the mini-world unstable and at risk of vanishing at any moment.
The underlying principles of such anomalous dimensions remained unknown; or rather, with humanity's existing technology, the concept of dimensions was still not understood, let alone the creation of them.