Possibilities of space are three and only three. Either space is material or not material. If neither is true, space does not exist at all. To resolve this issue, the non-existence of space will be the first to be considered. The two famous advocates of the non-existence of space are Bishop George Berkeley and Professor Immanuel Kant. Berkeley maintained that matter did not exist because nothing (space) could not hold mass while Kant maintained that his intuition created space, a view which is expressed in transcendental idealism–no space, time or matter without mentality. The Standard Model of Quantum Mechanics showed that mass existed disproving the idealism of Berkeley and Kant.
By consideration of the next issue, space is material or not material, it will be determined that spacetime or space cannot be material. Herbert Minkowski, a mathematician, announced that space and time would be combined (not by this post) which is a clue that spacetime is mathematical. For Einstein, spacetime became material because it curved resulting in gravity. It is obvious that in macro reality there can be no combination of space and time–ontological time may not exist at all. There are no atoms or other mass that comprise space and space is even transparent; it does not hinder vision or anything else. Immaterial space seems ideal for mass and the only problem it may pose is its on existence. After the non-existence of space and the materiality of space are eliminated, the possibilities of space are resolved: only immaterial space remains.