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 ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The latest mid-July predictions from IERS suggest the ...

Planet Earth is spinning a little faster today — resulting in one of the shortest days of the year. But the change will be so minuscule you won't even notice. We're talking even less time than the ...

Add Yahoo as a preferred source to see more of our stories on Google. Star trails over field of wild red poppies on the slopes of Mount Damavand volcano. By utilizing a long exposure, the circular ...

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and timekeepers. July 10 was the shortest day of the year so far, lasting 1.36 ...

We’ve probably all had a few conversations with people who hold eccentric scientific ideas, and most of the time they yield nothing more than frustration and perhaps a headache. In [Bertrand Selva]’s ...

A solar eclipse recorded more than 2,700 years ago is revealing surprising secrets about Earth's rotation and the Sun's ancient behavior. By correcting an eight ...

You’re probably used to the month of February having an extra day every four years, during the leap year. Timekeepers added that extra leap day because Earth completes one orbit around the Sun in ...