The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test ...

Space and time seem like two completely different ideas, but Einstein's theory of relativity shows they are interlinked in a ...

In January I wrote a piece titled “ 5 Physics Equations Everyone Should Know .” Lots of you weighed in with your own ...

Time dilation, a captivating concept embedded in Einstein’s theory of relativity, has been experimentally validated on Earth. With the use of ultra-precise clocks, scientists have been able to ...

When do the clocks fall back for an extra hour of sleep? Here's when daylight saving time 2025 ends for the time change this year.

As daylight diminishes, people can feel their mood dimming. In fact, millions of U.S. adults experience seasonal affective ...

Scientists have developed the first-ever time crystals that are visible to the human eye, and they could one day make their way onto $100 bills. The time crystals emerge from the kinks that appear ...

Summer is winding down, and that means sunset will happen earlier and earlier each day. But the most drastic change in sunset time will happen overnight. Once the clocks fall back, sunset will be ...

Daylight Saving Time will end on November 2, 2025, when clocks will "fall back" one hour. The purpose of changing the clocks is to allow for more daylight during summer evenings and winter mornings.