Sep 1, 2018 · 1 min read
They key to this, IMO, is that space can expand faster than the speed of light, as happened during inflation. It seems strange, but the analogy would be ants walking on a balloon — you can blow up the balloon so fast that the ants move apart from each other faster than they could walk. So the furthest stars we can see are farther away than they could get if they were moving away in a non-expanding universe.