system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Does the universe expand at equal speeds in all directions? Would we even be able to tell?
gpt
Yes. And we can tell because we've looked and everywhere we look, we see the same things.

If there is one thing we know for sure about the universe is that on a grand scale, it is incredibly uniform (exactly the same in all directions).