The Birth of the Nuclear Clock: How Thorium‑229 Brought a New Era of Precision Timekeeping
A breakthrough in 2026 has brought scientists closer than ever to building the first nuclear clock. By precisely measuring the unique thorium‑229 nuclear transition, researchers have opened the door to a new era of ultra‑accurate timekeeping — and to powerful tools that could transform physics, dark‑matter research, and our understanding of the universe.
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