Most of the time, when somebody hears the word radiation, they think of the fallout left after a nuclear explosion, which can ...

They found that time, the very thing clocks measure, may carry a tiny built-in jitter no instrument will ever scrub away. The ...

Physicists have found that certain quantum collapse models, if correct, imply an inherent uncertainty in time itself, likely ...

The strange quantum nature of time moves one step closer to being untangled, thanks to new research on optical ion clocks.

After 12 years as the Bulletin's editor in chief, John Mecklin steps down. If you're a deep thinker and top-flight journalist ...

Physicists are rethinking one of quantum mechanics’ biggest puzzles: how fuzzy possibilities become definite reality. New ...

One of India’s four navigation satellites has gone out of service, creating a fresh problem for the NavIC network. ISRO said ...

China has taken a significant step in high-precision timekeeping by mass-producing a fingernail-sized chip-scale atomic clock that is accurate to within one second over 30,000 years. The advance ...

The NPT is essentially a bargain struck in the late 1960s between the states that had nuclear weapons and those that did not. The first five nuclear-armed states – also permanent members of the UN ...

The Doomsday Clock shows how close humanity is to self-destruction. It’s 85 seconds to midnight, closest ever. A trip to a nuclear missile bunker brings the concept home.

(THE CONVERSATION) Most clocks, from wristwatches to the systems that run GPS and the internet, work by tracking regular, repeating motions. To build a clock, you need something that ticks in a ...