What is LHC@home?

      LHC@Home is a project used to simulate the actions of particles in the newly opened Large Hadron Collider, the world's largest particle accelerator.  They simulate what the particles will do so they can fine tune the real thing, which begs the question, why spend all that time and money building it if you can simulate it?  Must be the difference between sending probes into space and men to the moon.  (Or not!)

     I bet you're wondering, what's a hadron, why is it large, and why do they collide them?  A hadron is a