A shadow of a scientist is projected as he walks past a screen at the European Organisation for Nuclear Research (CERN) control center of the ATLAS detectors during the restart of the Large Hadron Collider (LHC) near Geneva. Two circulating beams produced the first particle collisions in the Large Hadron Collider, three days after its restart, scientists announced.(AFP/Fabrice Coffrini) Mon Nov 23, 4:06 PM ET