@trestres
Science says the universe is expanding, but not 'into' something. The universe is all that there is.
If you're going to postulate beings outside the universe, then I would ask - how could they influence the universe? Everything we've observed is deterministic - its cause is something else inside the universe. Where is the scope for outside beings to be affecting inside mechanics?
As for the stuff that makes up the majority of the universe, we know perfectly well what its nature is - dark matter and dark energy - in that we can describe its properties and interactions with matter well. There's no room there to start declaring the extra stuff God or time or whatever, because it would show up with different properties.
Try reading Wikipedia on these subjects before declaring science supports you.
