Buried more than 3,000 miles beneath our feet, Earth’s solid inner core was once thought to be unchanging—locked in place at the heart of the planet. But new research has revealed something much more ...

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 ...

The Earth is spinning slightly faster than before, and that means our days are becoming shorter by a tiny fraction of a second. Scientists say this trend has been noticeable since 2020, and by 2029, ...

Gather your little ones for story time with the National Air and Space Museum. Museum educator Ann Caspari will read "The Day the Earth Stopped Spinning," an original story about the orbiting and ...