Scientist have thought that protons and neutorns were fundamentals, which means that they are the smallest as matter can get. Until cosmic rays came in, and scientist got everywhere. So they thought about a machine that produces cosmic rays. (Which aren't rays, but near light speed particle). And here it is. The Particle Accelerator.
Brainpop for everything in this project. From top, to bottom. Thanks guys! Yes, there IS history. It's not the end of human race.
