For the sake of discussion, consider the whole of creation (time, space, matter, history, everything other than eternity) as an engineered device.
According to scripture, what was the INPUT and what will be the OUTPUT?
No.
No further expansion can be had because in the beginning there was only God. Creation is ex nihilo. It's not like an engineer constructing something from already existing materials. There were no already existing materials. God was it. To say, "God created things material and non-material* to create creation," is incredibly circular in logic.
And before this thread gets too lengthy and diverse, I think it is incumbent upon you to explain how the question asked in the op is specifically eschatological and belongs here in this specific board and not some other.
In the beginning there is God, and nothing else. At the end, if the heavens and the earth ever expire, there is God and nothing else. Because time is a created aspect of creation it is not even correct to use the words "was" and "will be" in the previous sentence. There is only "is" with God.
This is one of my thoughts concerning very FACT, and in particular, God's Immanence:
God is the only source of "new".
(Ha! We marvel at the 'otherness' of a new-born, and then credit ourselves for 'creating' him/her. How many times do we see the self-determinist's worldview rearing its ugly head with that notion, in arguments as to God's work and purposes, in order to prove false doctrines!)
In the law of causation, not to mention its many corollaries, there can be only one ever first cause. Therefore, only one ever "new". "A body in motion tends to stay in motion" but if it is even to go into motion, it is only by God's doing, and if it is to divert from its motion, it is by God's doing. If the universe comes into being, it is by God's doing, whether by use of the "big bang" or whatever.
The pun of, "original causation = sustaining of fact", is hilarious and beautiful to me.
I certainly would like to see Einstein in Heaven, and laugh with him at the beauty and wisdom of Omnipotence. I would like to laugh with Stephen Hawking there, too, concerning our best physics and God's immanence in sustaining the fact of very reality, but I find that a bit less likely to find him there. But, what do I know?