The universe was smaller and more dense in the past. Why we can see the oldest galaxies in the world when we look at the outskirts then?

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I just can’t wrap my mind around this. Can we see them anywhere? Why, if the universe was smaller? Or is there like one place in space where the aftermath big bang happened (I know there was no space at the time and big bang kinda went everywhere ofc) and we are pointing our telescopes at it?

Using human logic we should see the youngest galaxies (as their images in the past) far away and just won’t be able to spot the elders.

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Anonymous 0 Comments

They are moving away from us faster than the light travelling towards us so we will never see them.

The rate of expansion of the universe over very large scales is faster than the speed of light, so once you get far enough away the light cannot travel fast enough to reach us and there is no way we could ever see those very far away, very young galaxies.

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