Baryon asymmetry

Even if there were loads of CP violation, you couldn't produce baryon asymmetry without the other 2 Sakharov conditions: baryon-number-violating processes and departure from thermal equilibrium

It could be outside of our lightcone. Matter-antimatter pairs are generated moving in opposite directions. So I think it wouldn't be unreasonable to think that the anti-verse is likewise moving away from us, outside of our visible universe.

There is antimatter in our galaxy. It has been detected. What if a cloud of antimatter comes to Earth? Also, what if a space ship traveled to the antimatter universe?

What if I shook hands with an antimatter alien?

I never said that antimatter couldn't exist in our universe, just that our universe is biased toward matter, and the other one would be biased toward antimatter.

I am just saying that clouds of antimatter have been detected in our galaxy. What if someday Earth is hit with an antimatter cloud?

Then there will be significantly less Earth

yes the point is that the amount of antimatter is not anywhere close to the amount of matter

when matter and antimatter come together, they get annihilated. matter is being destroyed, there isn't a conservation of mass but mass-energy. photons are emitted from the annihilation

a cloud of antimatter wont come to earth because statistically that's so unbelievably unlikely. when our galaxy collides with andromeda there isn't even the least bit of worry that we'll be in danger just given statistics

if an antimatter earth and earth collided, we would all be destroyed though. if you are matter you do not want to be anywhere near antimatter. shaking hands with an antimatter alien would destroy you

What if the antimatter aliens come in peace?

It was probably only slightly asymmetrical.

Then all the antimatter annihilated with most of the matter and we are all that's left.

>now
Really? You think the CMB is "now", that's why we can see it?