The apparent rapid increasing expansion of the Universe can be explained as something entirely different happening. I have always believed it is an illusion created by out attempting to systematize our observations in a schematic fashion. My observation is entirely different. I try to be empirical about everything in science. Professors talk about the expansion of the Universe as being like raisons in bread dough that is rising and expanding. Everyone who believes in the expansion thesis discounts galaxies and other known gravitational structures in space as immune from the expansion as if they are the raisons in the dough. Sounds really tasty and smells like yeast.
I however, instantly , see an other cause for apparent expansion , even expansion of ever increasing velocity , even infinite expansion. That happens to be pretty simple: Suppose all the gravity centers in the Universe are causing space in their immediate vicinities defined by the areas seen between gravitational structures and material points that we detect then Gravity can be causing spaces to grow as gravitational center shrink with in space. Yes . Indeed It is the Shrinking Universe Theory.
So as Galaxies get more and more dense and compact they shrink expanding space between them. Simple . Also infinite. Maybe an illusion or possibly even simple reality by virtue of inference and deductions.