World's Largest Machine
The Large Hadron Collider is the world's largest machine. It is a massive subterranean experiment situated under the Franco-Swiss border. It consists of an accelerator designed to propel protons around a 27-km-long tunnel and smash them together. Its purpose is to simulate conditions that existed in the briefest of periods following the Big Bang. Scientists hope to be able to gather evidence that will shed greater insight into the nature of the universe.