A technician walks under the core magnet of the CMS experiment at the CERN in the village of Cessy

22 Mar 2007, Meyrin, Switzerland --- A technician walks under the core magnet of the CMS (Compact Muon Solenoid) experiment at the European Organization for Nuclear Research CERN (Centre Europeen de Recherche Nucleaire) in the French village of Cessy, near Geneva March 22, 2007. CMS is part of five experiments which, from the end of 2007 on, will study what happens when beams of particles collide in the 27 km (16.8 miles) long underground ring LHC (Large Hadron Collider). REUTERS/Denis Balibouse (SWITZERLAND) --- Image by © DENIS BALIBOUSE/X90072/Reuters/Corbis