Earth’s rotation is shifting towards a 25-hour day

Earth's rotation is indeed slowing down, and it is estimated that a day will be 25 hours long in about 200 million years. This is due to a phenomenon called tidal braking, caused by the gravitational pull of the Moon.

As the Moon pulls on Earth's oceans, it creates a bulge of water that is slightly ahead of the Moon. This bulge exerts a force on Earth, slowing its rotation.

The effect of tidal braking is very small, but it has been happening over billions of years. When Earth first formed, a day was only about 6 hours long. Over time, the day has lengthened to 24 hours, and it will continue to lengthen until it reaches about 25 hours.


The slowing of Earth's rotation will have a number of consequences. One consequence is that it will make the Moon's orbit more circular.

The Moon's orbit is currently slightly elliptical, but as Earth slows down, the Moon will be pulled closer to Earth and its orbit will become more circular.

Another consequence of the slowing of Earth's rotation is that it will make the length of the year slightly longer. This is because the year is defined as the time it takes for Earth to complete one orbit around the Sun.

However, it is an important phenomenon that scientists are studying to better understand the evolution of our planet and its solar system.


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