Earth’s rotation is no longer matching the tidy 24-hour day that our technology assumes. Since 2020, each day has been ...

If you haven’t accomplished as much this summer as you had hoped to, you can blame forces far beyond your control: a few of these dog days, by one measure, are among the shortest you’ve ever lived ...

Humans discovered the curvature and rotation of the Earth thousands of years ago, dating back to ancient Greece. Since then, scientists have only discovered more evidence to prove this is true – ...

The Earth spins on its axis once every 24 hours, right? Actually, no. The length of each day varies widely by a few milliseconds. According to the International Earth Rotation and Reference Systems ...

Meltwater from the polar ice caps, combined with the shifting spin of Earth's core, is messing with the Earth's rotation to the point that we might need to adjust for a "negative leap second." The ...

Earth spun just a bit faster than usual on July 9 and is expected to do so again on July 22 and Aug. 5, according to the website TimeAndDate. Over a millisecond was reportedly shaved off the clock on ...

Measurements of seismic waves over many years suggest the Earth's core is deformed and reshaped by conditions of extreme heat ...

NPR's Ayesha Rascoe talks to John Vidale, professor of earth sciences at the University of Southern California, about new research suggesting the rotation of Earth's inner core may be slowing down.

The time it takes for the sun to completely rotate depends where on the sun you are measuring.