The Hubble Space Telescope saw Comet 41P stop spinning completely, and then restart, but in the opposite direction.

Add Yahoo as a preferred source to see more of our stories on Google. According to scientists, July 9, July 22, and August 5 of this year will be some of the shortest days in recent memory as a result ...

The new study described this "almost unprecedented rate of increase" in the length of an average day as a quantifiable ...

Tracking the rotation speed of solid planets, like the Earth and Mars, is a relatively simple task: Just measure the time it takes for a surface feature to roll into view again. But giant gas planets ...

But new research suggests a new player is making an impact: us. By studying foraminifera, tiny single-celled marine organisms that leave behind fossil shells, a team of researchers from the University ...

For nearly half a century, astronomers have believed that stars like our sun eventually ...

Looking out to the future, we see a gradual but also very important shift occurring right under our feet; the Earth's own ...