Ok this is for you FEers (I am a REer)
So based on this pic :

I have developped my thought :
Let's say matter is charged positiv, anti-matter is charged negativ.
The center of the universe has the highest positiv electro static charge due to the huge amount of matter (regrouping of suns).
The earth being matter aswell, is charged positiv, as is everyone and everything upon it.
Because the center of the universe's charge is much higher that the earth's, we are pushed against the earth (gravity).
The positiv charge of the moon, sun and earth leads to a higher density of anti-matter gathered around them. So each "bit" of matter has a higher density of anti-matter around it than empty space.
The positiv charge of the earth pulls the negativ charge of the moon and vice-versa, the pull is higher than the push between Sun-earth/moon earth (I haven't had time to really think about it) so the speed of the moon/sun + Coulombic pull = the orbit of the sun/moon around the earth.
Sheme :

What do you think ?