I am not a scientist I am a philosopher and as philosophers do I sit and think.
I recently considered space and this consideration of space led me to Gravity.
So I thought about gravity and this is what I have initially concluded.
Space may well be infinite unlike a universe which would appear to have a beginning and end and is therefore finite.
Space is an enigma but here are a few things that it would appear to be not.
Space has existence yet appears to have no substance and therefore would appear to have no discernable mass.
Space is not part of nor does it appear on the table of elements.
Space does not appear to have an electro-magnetic energy signature and therefore has neither frequency nor measurable radiation.
Space itself appears to have zero resistance to motion.
Therefore it is my hypothesis that Space cannot support mass unlike a fluid which allows buoyancy.
Since space may have no substance and therefore has zero resistance and cannot support mass it is possible that all mass is falling within an infinite space at a uniform rate.
Yet because all mass may be falling at a uniform rate within an infinite space you would be unaware of this falling since no visible to the senses reference would be available.
Think about it.
If as I suspect all mass is falling at a uniform rate within an infinite space then to move in a different direction to this fall an expenditure of energy as power whether chemical or otherwise would be required.
That which we call Gravity may well be the evidence of this falling and all of the Newtonian laws of physics and motion may well still apply.