Does expansion exist on the micro level as well as the galactic level? I've never read about it, but it occurs to me that there can be no uniqueness about where the expansion of the universe exists. I have to envision an atom as a 'kind' of solar system, and a molecule therefore as a 'kind' of galaxy, and an ore sample of this molecule as a galactic cluster. With this simplistic view in mind, it seems to me that the space between ALL particles, not just large objects, must be increasing- and frankly, that the particles themselves (since they are not "solid" objects, but rather consist of "smaller" entities (smaller expanding "universes")) must be expanding also. Why have I read nothing of this? I'm not well-read admittedly. By the way, if this were the case, wouldn't we feel the expansion of the physical object beneath our feet as a force pushing up against the bottom of our feet? Come to think of it, our feet would also be expanding down toward the ground, thereby creating some sort of feeling.