From what I have read, it sounds like GR predicts that under certain conditions, space itself will expand. If this is incorrect, please just let me know and ignore the below. While I don’t know the math involved in GR, I can understand explanations of how gravity distorts space-time, to alter trajectories of objects moving in a straight space-time line, such that they appear to curve in space, around locations of higher-energy density. I can understand explanations of how a constant speed of light for all observers can lead to relative time dilation, and length contraction. But I fail to see how either of these descriptions can result in an expanding volume of space, or even the appearance of such. Is there a way to describe this phenomenon without math? Can you describe what conditions could induce an expansion of space and how? (Obviously, I can imagine scenarios in which the volume encompassed by “stuff” would increase, but these involve objects moving through space with some initial momentum (away from a central point), which is not the same thing as space itself expanding (no central point, no initial momentum). Also, would the manifestation of this phenomenon be relative? So that, like time-dilation, different observers may see different results?