system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: 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?

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.
gpt
>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.

This is correct, there's a bit of a semantics issue here. When we talk about seeing the oldest galaxies, we mean the galaxies from the earliest times in the universe. This means that 'now' they will be incredibly old, but the image we are seeing of them is from when they were very young.