but where is "up"? what is up there in "up"? is "up" infinite and endless? and if so, why is it endless and why does the universe need to be accelerating?
As I said. It is the direction relative to us as "up".
I do not know what is in "up". Must likely, just more space. It is an interesting question, but it is irrelevant.
Well, I suppose the universe doesn't
need to be accelerating since the universe doesn't have wants or needs. That is simply how the universe
is.