NASA Earth Observatory. LHC_Homepage. The Large Hadron Collider (LHC) is the world’s largest and most powerful particle accelerator.
It first started up on 10 September 2008, and remains the latest addition to CERN’s accelerator complex. The LHC consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way. Inside the accelerator, two high-energy particle beams travel at close to the speed of light before they are made to collide. The beams travel in opposite directions in separate beam pipes – two tubes kept at ultrahigh vacuum. Science Daily: News & Articles in Science, Health, Environment & Technology. SPACEFACTS. Learn More at Space.com.