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I see. I've read that the mechanism behind the expansion of the universe (space itself) is a source of negative pressure. This is because negative pressure exerts a repulsive gravitational force, causing objects to spread further apart. However the energy or matter (Dark energy/ Dark matter) has not been observed, only its effects through negative pressure on the expansion of the universe.But even through this explanation, it sounds as if the expansion of space is indistinguishable from the increasing separation of two objects. Unless of course the negative pressure causes spacetime curvature that increases the actual amount of space that exists.How would an increase in space appear mathematically? I picture the limits of space being infinite, and when a precise volume k is added to this infinite volume of space, you get ∞ + k, for some constant k, as an answer. Is there some theoretical limit to space that one can understand through mathematics?

Im not a science guru but are not objects moving away from each other faster than C and as they are and matter cant travel faster than C it seems logical that the space itself must be expanding

If space expands, should matter not expand with it? No one can explain this...