So the difference of about two in a billion. So that we have now a billion and two matter particles and a billion antimatter particles. So the only way that could be possible is that there must be some mechanism to pick one out of a billion antimatter and convert that into matter somehow. But that's not the universe looks like to us, at least we exist, so we need to have remaining matter. But if they stayed equal, they all annihilate with each other, and universe should have become totally empty. So if there were a billion and one matter particles, there should have been also be a billion and one anti-matter particles equal in numbers. But as we have learned, matter and anti-matter are always created in pairs, one to one.

Back then at the Big Bang, there was huge amount of energy, and energy created matter and anti-matter. So the only way we can sort of understand how universe came to this kind of situation is this. So that's how the current universe should be. So, what that means is that as far as we can see, our entire universe is made only of matter, and no anti-matter. And as far as we can see, in our universe, there's no part of the universe where we see matter and anti-matter aligning with each other, spraying huge amount of energy. As you know, this is a good thing, right? If we actually meet anti-matter counterpart, the minute we will meet, then we annihilate with each other. This matter, that makes up us, stars, and galaxies. So this is the way the current universe looks like.

What does anti matter look like