It’s not going to make sense sadly. When you get to either extreme of size, very big like the universe or q black hole, or very small like quantum particles, our everyday experiences and expectations just no longer work. The universe is infinite. Why? Because it is. Just like there was no time before the big bang, all objects with mass warp space time, all objects without mass travel at the speed of causality, black holes are singularities with infinite density, etc. Things just get weird sometimes.
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