Big Bang atom smasher sends beams in 2 directions

(AP Photo/Fabrice Coffrini, Pool, File)

November 23, 2009 9:45:28 AM PST
The world's largest atom smasher made another leap forward Monday by circulating beams of protons in opposite directions at the same time in the $10 billion machine after more than a year of repairs, organizers said.

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