If the universe is always expanding, that means that there are places that the universe hasn’t reached yet. What is there before the universe gets there.

Question

I just can’t fathom what’s on the other side of the universe, and would love if you guys could help!

In: Physics

Answer 1

I would like to propose that science simply does not know the answer to this, as it contains multiple unknown elements:

1) What is space-time “made out of”? We only understand about 10% of it (thanks to our ongoing effort o understand dark energy and dark matter).

2) How fast is space expanding? We have recently discovered it is variable, but ultimately we don’t know.

3) Why or how does space expand. We don’t know.

4) What existed before this universe? We don’t know.

5) The concept of OP that there is something “outside” our Universe is another example of something we don’t know.