This was moved from another thread in the relativity forum, as it isn't about relativity - pervect. Hi, I understand your question and your frustration. The problem arises by misinterpreting a mathematical description of reality (General Relativity) by reality itself. The "pure relativists" will only accept geometry as the basis to describe all physics and it is rather hopeless to discuss your question with them. I can offer you an intuitive understanding of expansion of space, which does not belong to the mainstream physics, and which can quickly be attacked for that. Therefore, I just want to present it here as an example of a possible way to answer your question. Suppose geometry is not the final "thing" but that something else is at the basis of (or creation of) geometry. This by itself is not new; it is known under "pregeometry". Suppose that this works as follows. Space itself is not continuous but discrete. It consists of a network of nodes which are interconnected (links). The metric would be related to this for instance by the number of nodes one has to cross to connect one node to some other node. This network is not static. Nodes and their interconnections are changing all the time (type of quantum fluctuations). Expansion of space can then simply be imagined by the splitting of some nodes and a corresponding reconfiguration of its external links. In other words, extra nodes - read space - is created.