> You've just looped it back around: expanding space gives finite, shrinking, observable universes. Which is just exactly the Big Bang theory.
There is nothing about Big Bang theory that explains the current expansion of our Universe (i.e. dark energy). In fact the Big Bang theory predicted our Universe should have stopped expanding and began collapsing on itself due to gravity (i.e. the Big Crunch), and that’s exactly why whoever can explain why the Universe is continuing to expand has a Nobel Prize waiting.
There is nothing about Big Bang theory that explains the current expansion of our Universe (i.e. dark energy). In fact the Big Bang theory predicted our Universe should have stopped expanding and began collapsing on itself due to gravity (i.e. the Big Crunch), and that’s exactly why whoever can explain why the Universe is continuing to expand has a Nobel Prize waiting.