Earth rotates once in about 24 hours with respect to the Sun, but once every 23 hours, 56 minutes and 4 seconds with respect to other distant stars. Scientists call this difference crucial to ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. If you've felt like summer days are flying by, you're not wrong—at ...

A change of milliseconds seems insignificant, but it can cause problems for our clocks, GPS and navigation apps, and satellites.

With the winter solstice happening this week, I once again pulled out my world globe and tried to understand just how this works. I held the globe in my hands at arm’s length and spun it slowly in a ...

For the first time, researchers at ETH Zurich have been able to fully explain the various causes of long-term polar motion in the most comprehensive modeling to date, using AI methods. Their model and ...

You’re not running late — Earth is just moving faster, at least for a few days this summer. On July 22, Earth will spin about 1.38 milliseconds faster than its typical 86,400 seconds in a day. If that ...

One day in the next couple of years, everyone in the world will lose a second of their time. Exactly when that will happen is being influenced by humans, according to a new study, as melting polar ice ...

Global warming has slightly slowed the Earth’s rotation — and it could affect how we measure time. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content.