It seems that on a micro level most of what there is is empty space.**

 

Again on the cosmic level we have space between bodies such as ,for example galaxies or solar systems.

 

Is there any qualitative difference between these two kinds of spaces or is the "difference" merely explained by the relative size and location of these spaces?

 

 

 

 

** it is said that an atom is almost entirely "empty space" ,as an example.

I don't think atoms are largely empty space. They are full of "electron" (i.e. electron orbitals). This can be seen in experiments that visualise atoms and molecules.

That is interesting. I have also heard that "outer space" is not empty.

 

So does "empty space" not exist as an absolute at all?

 

Is there a theory that space and matter and two sides of the same coin?(or something along those lines)

 

Are they possibly an emergent property of something more "elemental" ?

 

Perhaps I am garbling/rehashing something I have heard before without understanding it well....