An rise in Earth's rotational speed might have a wide range of effects, from greater earthquakes and tidal waves to longer days. The arctic ice might soon liquefy and lower many populated parts of the earth, while individuals in the middle of Africa could float weightlessly through the air. Aside from this fact, the Moon has an effect on the Earth's rotation because it takes energy from the Earth each year and moves further away. The Earth's rotational speed has slowed by 1.4 milliseconds, according to current estimates. Taking this into consideration, it would take about 50,000 years to add one second to the duration of the Earth's day. A massive enough object would have to hit the Earth in order for its speed to significantly increase. As a result, the atmosphere would be destroyed, and a series of devastating earthquakes might wipe out the whole human race. Earth Spins Faster Than Usual is a complete guide.
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