Take a cubic meter of space.
Suck EVERYTHING out of it. Get to a theoretical complete vacuum.
Now shine a light through it.
The light passed through that space. No problem.
So was something ‘there’ when the light was in it?
What is a photon passing through, when it is passing through empty ‘space’? Is that space still empty?
There would be quantum virtual particles popping into and out of existence.
Space is a fabric.
There is still space in space.
If time exists in a region of space, then that volume contains time-space reality.
God can measure the universe with the span of His hand.
It's finite.
Interesting thought experiment. I’m going to hatch that on some of the kids in my Troop.
The article describes what is called:
a fluid [ether?] which possesses 'negative mass."
IMO, for waves to exist, there must be a medium for the waves to travel through. Otherwise a photon transitioning from particle state in the vacuum of space to a wave state in a glass lens, would loose its wave shifted origin.
Are we back to a type of 'ether', now called "a fluid" in this new theory?
It may not be possible to remove all the energy from space.
“space-time” might not exist without the energy of the vacuum (quantum field).