system
Given the following post, respond as if you're commenting on Reddit:
human
How big is the universe and how did people find out the size out it?

I know it's huge and all, but help me grasp how *truly* huge it is.

Edit: Oops, it's: how did people find out the size **of** it.
gpt
Space is big. 

You just won't believe how **vastly**, *hugely*, **mind-bogglingly** *big* it is. 

I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.