Our universe is filled with particles, such as electrons and protons, which make up all the stuff on our planet and beyond: animals, plants, people, planets, asteroids, stars, gas clouds, and galaxies ...

Uh, NO. Obviously antimatter doesn't move backward in time. The point is that the fundamental laws of nature appear time reversable at the micro-scale -- you can "play a movie" of the "scattering" ...

Why didn’t the universe annihilate itself moments after the big bang? A new finding at Cern on the French-Swiss border brings us closer to answering this fundamental question about why matter ...