(Wall Street Journal) After a two-year shutdown, the atom-smashing machine known as the Large Hadron Collider has embarked on a renewed quest to probe some of the biggest puzzles about the universe, such as dark matter and the possible presence of other dimensions.
In the collider’s first run from 2010 to 2013, physicists discovered the Higgs boson, a breakthrough that closed a long-standing gap in the theory about how subatomic particles behave. Now, scientists hope to break new ground with the souped-up collider.
"We hope to find light in the dark universe," said Rolf Heuer, director general of the European Organization for Nuclear Research, or CERN, in an interview. CERN, based in Geneva, operates the collider.
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