Zotov predicts Earth’s rotation may soon decelerate once again. If he’s right, this sudden speeding-up could prove to be just ...

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

July 10, 2025 was the shortest day of this year, so far, as well as one of the shortest days the planet has seen since atomic clocks were invented. The odd thing is, we're not exactly sure why! The ...

July 10 was the shortest day of 2025, so far, as well as one of the shortest days the planet has seen since atomic clocks were invented. The odd thing is, we're not exactly sure why! The length of ...

On June 29, Earth recorded its shortest day ever, when it completed a whole turn on its axis at 1.59 milliseconds short of 24 hours. We also recorded another shortened day on July 26, Popular ...

Scientists are raising alarm bells as Earth’s rotation speeds up unexpectedly, leading to what may soon be the shortest day in recorded history. According to Graham Jones, an astrophysicist at ...

If it feels like the summer is slipping away faster than ever, you're not alone. On July 9, the world experienced one of the shortest days in recorded history, at 1.3 milliseconds shorter than the ...

About one-third of that change has taken place since 2015. The length of Earth's days, compared to the standard of 86,400 s per 24 hours, is plotted here, between Jan. 1, 2015, and Aug. 1, 2022.