[njskywalker]

without matter you have space. Space the infinite density flux from which all matter emerges and radiates into. Not hard to understand . yes a paradigm shifter but not wrong.

[Pmb]

without matter you have space. 

You’re quite wrong. You've been arguing strictly from a local perspective where you can have space with no matter in it. I was referring to not having any matter anywhere in the universe. A universe no matter whatsoever does not exist. The existence of space requires that there is some matter somewhere in the universe. Einstein’s equations in a cosmological setting imply this because when there is no matter anywhere then the stress-energy-momentum tensor (which defines the density of matter) is zero. In such a case there is no space because the equations which define the space never leads to an expansion which is what creates the space.

It wouldn’t hurt you to pick up a text on cosmology before you attempt to write another post on the subject.

[alexbalex]

Then there’s something I don’t understand. Why did you use the rubber sheet analogy for a moving body?
[/quote]

I admit, that was not the best analogy. I used it to respond to the balloon analogy posted by njskywalker. What I really wish to picture is the following. We know that the dough and raisins analogy describes the expansion of space. We also know that gravity is the bending of space/time curvature due to the presense of objects or clusters with mass. Enter the  thought experiment in which we assume that both phenomena are one thing. Space is expanding by definition, but if there is a presence of matter the expansion is being held up locally where the object is, resulting stretching of the curvature, thus we observe gravity. If space cease to expand, gravity will be zero. If space starts shrinking gravity will be repulsive.

[njskywalker]

without matter you have space. 

You’re quite wrong. You've been arguing strictly from a local perspective where you can have space with no matter in it. I was referring to not having any matter anywhere in the universe. A universe no matter whatsoever does not exist. The existence of space requires that there is some matter somewhere in the universe. Einstein’s equations in a cosmological setting imply this because when there is no matter anywhere then the stress-energy-momentum tensor (which defines the density of matter) is zero. In such a case there is no space because the equations which define the space never leads to an expansion which is what creates the space.

It wouldn’t hurt you to pick up a text on cosmology before you attempt to write another post on the subject.

Have you been to space? Report me some more because I'm doing damage to your world view. sorry

[JP]

Mod note: njskywalker, if you would like to propose scientific theories that are outside of accepted science, please keep your posts in the New Theories section.  This part of the forum is for science Q&A and discussion in terms of accepted science.

Thanks