Mathematically, the INFINITELY SMALL occupies no space. It has no mass nor motion and thus, no inertia. No energy. No emission and no absorption. It exists everywhere, without time, and perhaps ...without even, creation?
We humans see ourselves as much closer to the smaller end of things, rather than the larger. At the smallest end, the spectrum becomes finite, and our grasp of the concept makes SMALL seem somewhat closer - while the notion of INFINITY and small, takes an extra stretch of the imagination. Is it possible that matter can continually be broken-down into smaller and smaller bits? Might it be possible that finite particles could in fact ...exist INFINITELY within themselves... and be capable of being subdivided, forever?
The idea of a "Babushka" doll-styled, "embedded universe" creates the basis of fairy-tales. I suppose that most people have philosophized about the idea (at one time or another)... However, as we know (what we, at least today consider) fundamental particles behave completely "different" (i.e. "quantum-mechanically" speaking) when compared to "macroscopic" objects such as: galaxies. Hence, the model is not realistic.
I believe a leaf of grass is no less than the journey-work of the stars." -Walt Whitman