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how can we see objects that are 30 billion light-years away? How did their light have time to reach us? Moreover, we just figured out that they’re receding from us faster than the speed of light, which makes the notion that we can see them sound even weirder. Here the answer is that we’re not seeing these distant galaxies where they are now, but where they were when they emitted the light that reaches us now.
Our Mathematical Universe: My Quest for the Ultimate Nature of Reality
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