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New Clock May End Time As We Know It

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Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself. (Courtesy of the Ye group and Brad Baxley/JILA)
Strontium atoms floating in the center of this photo are the heart of the world's most precise clock. The clock is so exact that it can detect tiny shifts in the flow of time itself. (Courtesy of the Ye group and Brad Baxley/JILA)

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