Time already behaves strangely in modern physics. It can stretch, slow, and split depending on speed and gravity.

The most precise clocks ever built can now detect gravity’s warping of time across a distance shorter than a pencil tip. That ...

Chinese scientists have engineered a clock so accurate it could lead to a redefinition of the second and an ultraprecise global time standard. The new optical clock is so accurate that it loses or ...

Chinese breakthrough in ultraviolet crystals could lead to navigation systems resistant to jamming ...

Researchers are looking for new ways to improve timekeeping because even small gains in stability can help physicists discover subtle physical effects. The thorium-229 nuclear clock is a newer venture ...

A portable atomic clock that has been successfully tested at sea could change the future of marine navigation.

Adelaide University researchers have successfully tested a new type of portable atomic clock at sea for the first time, using ...