Two teams of physicists have made the world’s first nuclear clocks. These radical new devices use fluctuations in the energy ...

A clock built from thorium-229 has crossed an important line, from a long-discussed concept to a working device. The shift ...

Nuclear clocks should be more robust and portable than the best available clocks today because nuclei are hard to perturb and ...

For decades, nuclear clocks have existed as one of physics’ most tempting promises. A ...

Humanity has used clocks since we became aware of the concept of time. And as technology has improved, so have our time-keeping methods. Today, many people rely on digital clocks to track the hours ...

(koto_feja/Getty Images) A breakthrough in chronometry decades in the making could redefine the limits of how we keep time.

A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually beat the accuracy of today’s best atomic clocks ...

Atomic clocks will only see a loss of 1 second in accuracy over a period of 10 million years. They are used in multiple ways, including the GPS in your car. Now researchers have found a way to bypass ...