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Events on Tuesday 13 December 2011 2
2011CERN reports first hints of the Higgs bosonPhysicists narrow the search for the "God particle"Scientists at CERN's Large Hadron Collider announced tentative signals consistent with the long-sought Higgs boson, a particle theorized to explain how other particles acquire mass. The results were not yet strong enough to claim a discovery. Confirmation followed in July 2012.
2011Last F-22 rolls off the line195 builtProduction ends after 195 aircraft, down from the 750 once planned, after the Pentagon capped the fleet in 2009.