[Leitwolf (OP)]

I think I have a pretty simple solution the gravity issue which is the foundation to the theory of dark matter. As we might all know, large accumulations of matter tend to rotate faster then they should, given the mass present (or detectable) and the gravity derived from that. This well applies to star clusters, galaxies and even galaxy clusters. The difference between observed reality and theory increases with the size of the rotating object.

Dark matter could explain that difference. It would provide the gravity needed to hold these galaxies (and other objects) together. Of course, so far we have not discovered any dark matter, which may be just an indication of how "dark" it is. Or we might have gotten something completely wrong.

Then again, there is one kind of dark matter which we have proof of, and those are black holes. However I do not name them, because they are dark, but because they feature a phenommenon that could well explain the whole subject. Black holes are rotating and space around them is rotating too. Black holes seem to pull space along with their rotation, which is well in line with Einstein.

Now black holes may be considered as an exception where the rules of physics hardly apply, but more likely this will be due to a more general relation between matter and space. We might see it as an information problem. What the universe only consisted of a cue ball moving through space. How would we know it is moving without any point of reference?

Space will likely be defined by matter. If large, or extensive masses of matter move along simultaniously, that might well pull space with it. If that is so, the relative movement of this matter through space will be substantially slower, also resulting in less centrifugal forces, if we think of galaxies.

It is like cyclists which, at any given amount of effort, can go much faster driving in a group. Every individual cyclist will pull air along with him, thus reducing the drag for the others. If you ever witnessed a bicycle race standing at the side, you might be surpised by the wind a group of them is causing.

Under these assumptions, what we see is not a lack of gravity, but a lack of movement, as space itself is moving. Dark matter on the other side would no longer be necessary to explain what we observe. Of course, moving space would consequently cause a chaos of lense effects, which might blurr our vision when we look into deep space.