system
Given the following post, respond as if you're commenting on Reddit:
human
Is the expansion of the universe constant in all directions?

So, I know that the universe is expanding at a faster and faster rate, like an exponential function. But is the rate as which it's accelerating constant? Or does it change? And is it uniform in all directions?

And is the rate of acceleration changing at all? Is it increasing? It's a lot of questions, I'm just curious.
gpt
The expansion is, as far as we can tell, uniform in all directions. The Copernican principle - the idea that there's no special place or special direction in the Universe - agrees very well with observations.

The acceleration is approaching a constant rate, but it is currently increasing. You can tell this because the expansion of the Universe was initially decelerating, but is now accelerating, so the acceleration must be going up.