Thanks to atomic clocks (and all the worldly forces that influence them), scientists know that Earth's rotation has begun to ...

On the surface of the planet, the motions of wind and waves also change how fast the Earth spins. The tides that slosh the oceans back and forth affect rotation speeds, and so does the wind. As air ...

The planet has a diameter of about 31,518 miles (50,724 km), making it the third-largest planet, and according to flyby magnetic data from Voyager 2 in 1986, has a rotation period of 17.23 hours.

Tides can distort a planet's mass, which in turn affects its rotation. We're most familiar with gravitational tides, which on Earth we feel from the gravity of the Moon and the Sun.These ...