The Large Hadron Collider (LHC) in Geneva is the arguably most famous experiment on Earth. It’s also, by many measures, the largest; a particle collider 27km in circumference and 100m underground, it took 16 years to build and cost £6bn.
The LHC was built to answer some of the burning questions facing particle physicists. Within the massive tunnels, protons travelling at near-light-speed collide with each other, and the physicists examine the resulting debris to try to work out what is going on. Hundreds of researchers scour the data for evidence of the Higgs boson, embraced by the media as “the God particle”. The Higgs, if it is found, would explain why everything around us has mass.