The sidereal day is defined to be the length of time for the March equinox to return to your celestial meridian. Compare this ...

The world is hungry for renewable sources of energy, which has led some scientists to ask the question: what about the rotation of the Earth? A new study reports that researchers have successfully ...

Key Takeaways on the Speed of Earth's Rotation The speed of Earth's rotation is about 1,000 miles per hour relative to its axis. Your exact speed of rotation due to Earth's spin depends on your ...