Two days this summer have been unusually short, with the shortest expected on Aug. 5, leading global timekeepers to consider ...

Using the Linac Coherent Light Source (LCLS) at SLAC National Accelerator Laboratory in California, the team blasted the ...

Earth is spinning faster than usual, causing shorter days by milliseconds. Scientists are studying this rare change, which may affect technology and timekeeping. The reasons include changes in the ...

Optical clocks are typically evaluated on two levels — accuracy (how close a clock comes to measuring the ideal “true” time, ...

To celebrate Osbourne's life and legacy, we've selected just a few songs that made the man, from timeless tunes to a few left-of-center selections.

Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's ...

Tuesday, July 22 will be the second-shortest day of the year, as Earth completes a full rotation in less time than usual.The ...

Tuesday, July 22, is expected to be the second of three days in 2025 where more than a millisecond could be shaved off the ...

July 22 will not be a normal 24-hour day. Instead, Earth's rotation will be completed just shy of those 24 hours. Find out why ...

Earth doesn't rotate exactly on schedule. Scientists believe that today is going to be about a millisecond short of a typical ...

If realized, the Golden Dome would provide a comprehensive protective shield against ballistic, hypersonic, and advanced ...

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...