Quote:if the laws of physics are such that we can only create matter and antimatter in equal amounts, how did we wind up with a Universe where every structure we see is made of matter and not antimatter?
Casually speaking....
Matter/anti-matter collisions would result in what? Nothing? An absolute cancellation of one another? Is there any residue?
So.....Out of nothing, something is created and scattered about that when recombined equals nothing? I'm going to stick with the thought that the observable universe may be what nothing looks like.
Distances are so vast and galaxies so large that when they collide with one another nowadays, star on star contact not likely. In the early going when matter was created, I think there might have been a blast or two. I wouldn't doubt that entire galaxies are made of anti-matter.