I think I see what you're getting at Samuel. If matter has gravity via gravitrons, then maybe antimatter has repulsive force via anti-gravitrons, and this is what is causing the universe to expand. Is that a correct assesment of your idea?

A few questions I would pose, in that it's my understanding that there is more matter than anti-matter in the universe. If this is indeed true (I don't know, is it?) then why would the repulsive force of the anti-gravitron overcome the attractive force of gravity?

Also, gravity (thus presumibly "anti-gravity") is a weak force. Would this anti-gravitron be a strong enough force to over come other, more prevelant influences on a universal scale?

Lastly, if this particle exists and is the driving force behind universal expansion, wouldn't it have to exist uniformly in order for the universe to expand, well, uniformly?

I don't know maybe I misunderstand your theory, and with my limited knowlege of such things I dont' even know if my questions make sense. But thats what comes to mind for me.

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