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 ...

For nearly a billion years, Earth’s rotation stopped slowing down. Locked in a rare cosmic balance, the planet’s day remained fixed at 19 hours, stalling the normal progression toward longer days.

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 ...

James O'Donoghue receives funding from the UK Science and Technology Facilities Council (STFC). Earth will complete a rotation 1.33 milliseconds earlier than usual on Tuesday, August 5. That makes it ...

Earth's rotation is randomly speeding up, and nobody is quite sure why. These speedups, which have occurred several times over the last few years, haven't had any effect on daily life, but they also ...

Researchers from the Institute of Geology and Geophysics at the Chinese Academy of Sciences and Curtin University in Australia are reshaping how you understand the rhythm of Earth’s deep past. Led by ...