The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond ...

July 9, 2025, saw the Earth spin through one of its shortest days on record a fleeting, nanosecond instant that passed ...

July 9 was unusually short thanks to changes in how fast the Earth is spinning. But two other days this summer are expected ...

While it’s unlikely anyone would notice a missing millisecond, there’s potential this speed-up could have ramifications for ...

On July 9, 2025, scientists at the International Earth Rotation and Reference Systems Service (IERS) reported that the Earth ...

Scientists have revealed exactly when the next shortest days will occur as Earth's rotation speeds up once again.

I n February 2025, a group of geophysicists published a study that suggests changes are underway in the Earth's inner core. Already in 2023, we learned that the rotational direction of our planet's ...

Is Earth's inner core solid or liquid? While the inner core is extremely hot, experts have known that it is solid for many ...

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Forecasters are set to lose some of their sharpest eyes in the sky just a few months before Atlantic hurricane season peaks ...

Over a thousand miles from the surface, in Earth’s D” layer—right on the edge of the liquid metal outer core—there is a weird acceleration of seismic waves. Experiments recreating the ...