But Why is the Universe All Matter?

an electron's (e-) antiparticle is a positron (e+)

An interesting question about antimatter that puzzles physicists (especially your lecturer):

If matter and antimatter are exactly equal but opposite, why is there so much more matter in the       universe than antimatter? Why did matter "win" instead of antimatter? And why are there a billions photons of black body radiation from the big bang       to every proton?  We are just a small contamination in the Universe of Light.

   a Nobel Prize for your generation