system
Given the following post, respond as if you're commenting on Reddit:
human
Has the Big Crunch Theory been disproved?

I'm not that great with science but I know the basics of the Big Crunch theory. My brother and I got into an argument on whether the theory has been disproved. I couldn't find any evidence saying it has been yet he says that it has been official disproved so I was wanting a little help figuring out who was right.
gpt
It was basically ruled out by the 1997 discovery of the accelerating expansion of the universe, given what we know about physics. If our understanding of high energy physics changes, this might change as well.