Is there a specific name to the apparent nothingness our universe is expanding through?

Answer 1

We've given it lots of names, haven't we?

"space" or "space-time",
"the vacuum of space",
"empty space" ("the emptiness of space"),
"the fabric of the universe",
"the space-time continuum",
"the void" ("the Nothing" or even your own "apparent nothingness"),
"ether" (or "aether")

Be careful with that last one, though it's one of my favorites...

In the days before quantum mechanics, the word was briefly used in a theory as a technical term for an idea that was later soundly regarded as flawed. There's less likely to be controversy in a more literary context, but in a technical context, be precise whether you mean the nontrivial theoretical entity that was debunked, or the scientifically-trivial isomorphism meaning nothing less (and nothing more) than "the very fabric of space-time itself".

Answer 2

Yes I call the substanceof space out of which I developed the Spheron Theory . Relativity theorists call it the fabric of Spaces. Classical Physisits called the Aether.Ignoramuses call it a vacuum.
The Bible calls it the foundation of the Universe.
I believe the Spheron theory makes sense and its related to the structure of matter.
The string theory is a beautifull mathermatical fantasy.And you have to be Either Einstein or Hoodinini to make sense out of it.
However they do allude to a granular structureof the Universe and on that note it finds agreement with my Spheron Theory of the Universe.

As far as the Universe Expanding Raymond RedBourne proved other wise.It is not expanding as Hubble thought.Ha the knowledge of science and the discovery of its ignorance!
(see his proof about wave dispersion verses doppler effect)

Answer 3

space

Answer 4

void or vaccuum of space

Answer 5

the vacuum.