Considering the broken symmetry after the big bang - what I understand as there being a huge surplus of matter and a lesser presence of anti matter - is it possible that dark matter could be anti-matter?
And thus explain the missing anti-matter we might expect from symmetry?
Is there data or any reliable theories that exclude this possibility?
So far our experience with anti-matter is small scale, right? We really don't have experience with anti-matter in bulk. Or are our theories reliable enough to predict bulk properties?