What is space? the 'true' vacuum?

Question

e.g. the interstellar vacuum where forces, matter, etc. operate. Or, how can nothing have dimension?

Answer 1

Space describes allot of places in the galaxy,some Nebula are giant gas & dust clouds, also traces of gasses can be found in space, sometimes when a planet is forming the solar winds can blow some of the lighter gasses away from a planets atmosphere, Mars has a thin atmosphere because Mars weak magnetic field couldn't block solar winds from blowing the atmosphere into space.

Answer 2

a vacuum is the absence of matter, forces and energy can still act within it, e.g gravity and light

Answer 3

Endless, Eternity, include forces, matter, etc.

Do you think about World People Victory, Forever, Universe, plus learn Cosmology, Astronomy to strive for, struggle your dreams, hopes, legend, fights, free, human struggles, never die spirit.

Answer 4

You've probably heard the phrase "The fabric of space"....  Space, with absolutely nothing in it, (rare to find, in fact) is part of our universe, there for, every *point* in the sample you're looking at will have some sort of dimension, even if there's nothing there to measure.  A cubic foot of air, or wood, or dirt, or space is still a cubic foot. Time exists within that cubic foot, as does the other 3 measurable dimensions, and the proposed 14 other dimensions that are part of every point within that space.  

Answer 5

Truly a confusing question you have there. Or is it several questions bundled together? Let's see...

Space is space, the continuum in which matter and energy exist. The true vacuum is apparently impossible to achieve, and people say that it can't even exist. In reality, space in our Universe is bustling with matter, energy and a multitude of forces all pulling on each other.

Apparently, space itself is not "nothing". Space can be bent, it's connected to time, and it probably has a bunch of other odd properties we haven't discovered yet. If space was nothing, then there would be space before the Big Bang, and we all know well that there was no space before the Big Bang (in fact, there was even no "before"). So, space is pretty much something that has properties, can be manipulated, etc.

Dimensions is a pretty much abstract concept. We perceive our world in 3D, but some 4-dimensional creature will see us as we would see a flat 2-dimensional world.

Answer 6

In the beginning was the Word,and the word was with God,and the Word was God. The same was in the beginning with God. All things were made by him;and without him was not any thing made that was made. In him was life;and the life was the light of men. And the light shineth in darkness;and the darkness comprehended it not.

Answer 7

Would you believe me if I told you that aether was real?

I didn't think so...

Answer 8

There seems to be some evidence that the vacuum may be quite a bit more "interesting" than previously thought.  Virtual particles jumping in and out of existence.  I don't understand a word of it.  I grew up with Sir Isaac Newton's universe and I still like it just fine.  Its such a nice, elegant, and easy to understand universe.  The current universe is relative, expanding, and generally annoying.  I want no part of virtual particles and vacuums that are a soup of energy.  Reality be damned. "Give me that old time physics....Its good enough for me".

Answer 9

The answer is even more complicated than the question.

In interstellar space, particles come into existence and wink out in a fraction of a millisecond.

The universe is not only expanding but also accelerating. Should there be enough matter in it for the gravity to reverse the expansion, then the universe will collapse back to a single point and start again. If this is true then the big bank was not only the creation of the universe, but also the destruction of the last universe.