Let us now perform another level-set. So far, we recognize and accept the obvious existence of matter within the Universe. Furthermore, as E=mc 2 tells us, whether any unit of matter happens to take the form of energy or mass does not subtract from its overall qualification (or quantification) as matter. In other words, mass and energy are interchangeable; they are only different forms of matter. Of course, this is not to suggest that switching between these two states is a trivial thing - far from it, but that is a topic for another day. Next, we know that empty space isn't exactly empty. Meaning, in a very real sense, there is a spacetime fabric that can be coerced into forming gravity wells, or producing other observable effects such as gravitational lensing. Gravity wells then, are constructed of spacetime itself; they do not fall within the realms of matter, but have identifiable characteristics nonetheless. General Relativity actually predicts Emb...