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Clocks made from an atomic nucleus just ticked on for the first time

Researchers have built the first nuclear clocks, which use an atomic nucleus instead of electrons to keep time, and have already used one to search for dark matter. The breakthrough could lead to more precise timekeeping and new physics discoveries.

read1 min views5 publishedJun 11, 2026

News Physics Clocks made from an atomic nucleus just ticked on for the first time Researchers already used one of the nuclear clocks to search for dark matter A crystal of calcium fluoride that is infused with thorium atoms (shown) is at the heart of a new nuclear clock. Luca Toscani De Col/TU Wien By Emily Conover June 11, 2026 at 11:00 am Share this:Share Share via email (Opens in new window) Email Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Print (Opens in new window) Print Listen to this article This is a human-written story voiced by AI. Got feedback? Take our survey .

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