++ [ originally posted by Paolo_Montero
] ++
indeed it is
personally I believe there is as you out it 'othingness' which means a perfect vacuum containing absolutely no particles whatsoever. That makes sense as it would allow the universe to expand as it is doing currently.
Its definitely expanding though I can assure you of that, every
galaxy is moving away from every other galaxy (we can see red shift from stars indicating they are moving away)
think of it like this...take a balloon, and draw loads of black dots on it. When you blow the balloon up, the black dots all move away from each other. Imagine the dots as galaxies and the volume of the balloon as the size of the universe.