Scientists look at computer screens showing traces on the Atlas experiment of the first protons injected in the Large Hadron Collider (LHC) during its switch-on operation at the Cern's press center on Sept. 10, 2008 near Geneva. Physicists fired up the world's biggest atom-smasher in a mission to answer some of the most perplexing questions about the nature of the universe. (FABRICE COFFRINI/AFP/Getty Images)
Secrets of the universe, found underground
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As the experiments at the Large Hadron Collider continue, beams of particles moving at ever higher speeds smash into each other deep underground. Scientists are hoping to learn more about a particle that may help explain the central mystery of physics.
Guests
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Roger Rusack: Professor of physics at the University of Minnesota.
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Joseph Kapusta: Professor of physics at the University of Minnesota.
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Joe Lykken: Particle physicist at Fermilab.
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