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A team of researchers in Vienna has built the first self‑stabilizing nuclear clock, marking a major step forward in the quest for ever‑more accurate time standards. Unlike conventional atomic clocks that depend on electron transitions, this device exploits the far‑more stable nuclear transitions of thorium atoms, which are far less affected by external influences. The breakthrough could eventually make nuclear clocks more precise than the best existing atomic clocks, reshaping fields that rely on ultra‑high‑precision timing such as navigation, telecommunications, and fundamental physics experiments. [[1]]