How close is this to what is being meant here? Let's say you have a big rubber sheet that can continue to stretch and stretch at the same rate and that it remains flat. (Yes a 2D analogy to help envision a 3D thing). On that sheet are little cars that move over the sheet. These cars move with their wheels pointed straight with the wheels driving at constant speed while the sheet stretches and stretches around them. The cars are like galaxies. So the cars might drive towards each other or away from each other (like Andromeda galaxy will crash with ours eventually). However the car doesn't measure the speed of other cars by how many times their wheels turn. Instead it measures their speed by how fast they appear to approach or recede from us. So the sheet keeps expanding while the cars move about on its expanding surface. How close is this to expansion theory? Also I do have another question. At a particular time in the universes life is the expansion occuring as a percent or as a rate? ie. is it 100, 110, 121, 133.1, 146.41, etc. or is it 100, 110, 120, 130, 140, etc.?