- Oct 2017
No antimatter persisted after baryogenesis, at least in any amount that can be observed from spectra.I find it very interesting that galaxies have Dark Matter halos. It's as if the volume of later forming galaxies were protected from Antimatter of the Big Bang.
No one knows what dark matter actually is. It might not even be matter; it might be a modified form of gravity at large scales. We are all welcome to speculate as much as we want about it!I think Dark Matter is either Antimatter or a substance of what is left after something defends Matter.
Your idea isn't crazy. In fact, the idea of dark matter having some component of antimatter is not a new idea.
There's loads of papers on dark matter and you can have a career trying to figure anything out about it. It's still under considerable investigation.