Physicists have created a visible, self-sustaining “time crystal” using swirling liquid crystals that move in endlessly repeating patterns when illuminated. Imagine a clock that runs forever without ...

An atomic strontium clock ticks 430 trillion times per second, tracking time with precision over billions of years and ...

In a letter to House lawmakers, NRB argues permanent DST would limiting reach and public safety services of AM stations ...

Meet Judah Levine, the "Time Lord" who ensures the world's clocks stay synchronized with his work at the National Institute ...

What the bishops in 1983 called “the most pressing moral questions of our age” (332) still remain before us in 2026.

The nature of time has plagued thinkers for as long as we've tried to understand the world we live in. Intuitively, we know what time is, but try to explain it, and we end up tying our minds in knots.

The U.K.’s successful testing of quantum atomic clocks aboard submarines provides validation for further research in quantum ...

For decades, scientists have sought ways to compress the tools of optical science – lasers, lenses, mirrors – onto chips that fit on a fingertip. Such ...

The steady tick of a clock usually feels simple and dependable. Something swings or vibrates in a controlled rhythm and marks ...

Scientists built a tiny clock from single-electron jumps to probe the true energy cost of quantum timekeeping. They ...

By the mid-20th century, scientists already knew with precision that the Earth’s rotation was gradually slowing. In 1972, ...

Scientists learned that reading a quantum clock requires orders of magnitude more energy than running it. This surprising imbalance reveals that observation itself shapes the flow and thermodynamics ...