ELi5: Is the entire Universe (unobservable + observable) 13.8 billion years old or just the observable Universe 13.8 billion years old?

Question

ELi5: Is the entire Universe (unobservable + observable) 13.8 billion years old or just the observable Universe 13.8 billion years old?

In: Physics

Answer 1

Can’t answer because no one knows. It’s like asking if there is an after life. No one knows that either.

I would say literally anything is possible, because we just do not know.