Thread: Vacuum of Space

If as we have recently found that the universe
is still expanding and that space itself is a vacuum
shouldn't the vacuum of space also be increasing at
some relative rate to the universe expansion?

Since the space as we know it is not truly a perfect vacuum, one would tend to believe that it is expanding into one which makes it seem like a paradox.( space expanding into space) based on a bubble type universe theory where our space(universe) is expanding along with other space universes. We have no way of knowing the exact rate per say, just a calculated guess on current information.

As space expands it causes areas in the universe to become stronger in gravitational pull which in time fills with gasses, matter and so on to equal out, creation at it's finest design.

But theoreticly everything that is in the universe was here at the moment of the big bang in one form or another
so the mass volume inside the sphere is /has been constant since the beginning.If you have a sphere and it gains constant
volume without any mass being added to the inside of the sphere the Vacuum should be increasing accordingly. No?

The question wasn't about expansion per say only as to if space has been
a vacuum since the big bang (when space was smaller than an atom) and
it has grown larger to say the least (without adding mass)would not the vacuum
of space have increased as the size of the universe increased?

Aloha! Very sorry I misunderstood, so my answer would be No..

Aside from the random 2 to 3 atoms per cubic meter, space is a vacuum, which is nothing. Expansion doesn't create more "nothing."

I apologize again, David - you had a great post. The location of buttons on this forum are confusing, and lead to mistakes.

Bottom line: My Bad.

If you recall your post, please recreate it as a reply to this one. Again, my apologies.

Why? Well lets go back to simple physics for every action there is? and also don't assume that this is the only way gravity works. The universe is just the matrix that allows gravity to form without dictating where or how strong it will be. I had pondered this very question for years thinking quite the same, that vacuum would increase and gravity would become stronger but the universe could never sustain this way.

I think the term you're looking for is "pure vacuum." Even now, there's not a "pure vacuum." As I said, a handful of particles exist even in the most remote cubic meter of space. Way back then, the density was unimaginable.

Surely as space expands the regions of vaccum become larger? This does not imply that absolute vaccum is acheived, like absolute zero temperature is not due to microwave background radiation. But as the volume of space increases the overall temperature decreases and so must the size of the vaccum increase? What happens when/if the big rip eventually happens?

I see no physics which support anything other than heat death. Do you?