I have a question regarding anti-matter in which ways can it be created? I got into a heated arguement with someone last night. He's a first year university student and he was trying to tell me that we can create it by accelerating particles to the speed of light and making them collide. I know for a fact this is false because only light can travel that fast. I also read something about Gamma rays hitting earths atmosphere and creating small amounts of it could this be what he's talking about? gamma rays are made of protons correct?