Hello, I'm not an academic but someone who had been watching way too many documentaries and has what is probably a very nieve question? "What is space made of?" It strikes me that in order for gravity or attraction of any sort to occur then there must be something physically linking the objects in question, whether that be energy or what? If that's right then that must be linking everything in every direction to everything else? In my simple mind it seems that if we can establish exactly what space and attraction are, how they actually work rather than just their consequences we might be better equipped to work out the big bang and beyond or is that overly simplistic and wrong? I keep hearing that gravity is a force and how it's measured but not exactly how one object attracts another. The membrane analogy doesn't seem to quite do it for me as it seems to be very 2 dimensional and doesn't adequately seem to translate into a full 3D environment, wouldn't you need infinite membranes eminating in all directive at once?