A concentration of one part per billion is like a pinch of salt in 10 tons of potato chips—and scientists can now find radioactive particles at concentrations millions of times smaller. In the Journal ...
Even experiments that aren’t looking for dark matter directly could give us hints about the mysterious substance that permeates our universe. Scientists love a mystery. It’s satisfying when a ...
The universe shouldn’t be here. Everything scientists know about particle physics, summed up in a theory called the Standard Model, suggests that the big bang should have created equal quantities of ...
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