From what I've read, particle accelerators accelerate particles to near the speed of light. As the speed of an object approaches the speed of light, the mass approaches infinite. By that time, that particle is like a wrecking ball. The force required to slow that particle down is almost infinite as well. So that object then can go through pretty much anything. How has that not caused destruction of Earth? Is it just that the momentum just does not transfer? This is coming from what I have learned so far about special and general relativity in my sophomore level physics class.