Energy Secretary says administration will tests nuclear weapons ‘systems’ without detonating devices — for now ...

On Sunday, Daylight Saving Time ended at 2 a.m. That’s the time when we “fall back’' by setting our clocks back one hour, and ...

On Sunday, Nov. 2, we head back into Standard Time and say goodbye to Daylight Saving Time until March 8, 2026.

Netflix’s apocalyptic drama sees president Idris Elba attempt to fend off a missile attack. We separate fact from fiction ...

Vladan Vuletić with members of his Experimental Atomic Physics group. From left to right: Matthew Radzihovsky, Leon Zaporski, Qi Liu, Vladan Vuletić, and Gustavo Velez. Every time you check the time ...

Every time you check the time on your phone, make an online transaction, or use a navigation app, you are depending on the precision of atomic clocks. Scientists are developing next-generation atomic ...

For all our telescopes and colliders, dark matter has remained an elusive ghost for the better part of a century. It outweighs everything we see by a factor of five, yet it slips past every detector ...

The US Air Force is turning to atomic clock technology to help coordinate swarms of small drones in environments where traditional satellite navigation is jammed or spoofed, according to a new request ...

Time dilation is a measurable change in the passage of time caused by differences in gravitational potential, a key prediction of general relativity. Recent advances in atomic clock precision allow ...

At this point, atomic clocks are old news. They’ve been quietly keeping our world on schedule for decades now, and have been through several iterations with each generation gaining more accuracy. They ...

URBANA, Ill. — Three atomic clocks, each no bigger than a grain of sand, suspended at different heights around a city. But these aren’t ordinary timepieces; they’re quantum devices that exist in ...

NIST physicist David Hume holds the newly modified ion trap for the aluminum ion clock. By modifying the trap, the aluminum ion and its magnesium ion partner were able to “tick” unperturbed. Credit: R ...