The Large Hadron Collider is the most powerful and largest particle accelerator in the world. It is located on the boarder of France and Switzerland and operated by CERN.
The LHC is built in the shape of a ring and has a circumference of 17 miles. This ring is made up of very powerful magnets that help push two beams of particles to almost the speed of light. The LHC then forces the beams to collide in order to smash particles together in an attempt to discover more about the subatomic world. Physicists hope the LHC can answer many questions about the nature of the universe.