Any celestial body in the universe is in regular motion, and the earth is no exception. We have formed a fixed biological clock, 24 hours a day and 365 days a year. After a long time of evolution, such a rule will not change much, but according to the latest research data of scientists, the earth time seems to be getting faster in 2021. What’s the matter?
Time is getting faster
Although we regard a day as 24 hours, there will be errors. Strictly speaking, the earth’s rotation period is longer than 24 hours. Since 1972, scientists have added one second to the time to ensure the accuracy of data. Until now, human beings have advanced the clock by 27 seconds. Now the earth is moving at the fastest rotation speed in 50 years, that is to say, the time we are going through is shorter than 24 hours. Many people will have doubts when they see here. Since the rotation period of the earth is fixed, why does this happen?
In our cognition, due to the influence of the moon and the sun, the earth’s rotation speed will always decrease, but since 2020, the earth’s rotation speed has begun to accelerate, and the rotation cycle has been less than 24 hours. Scientists have also predicted that on July 19, 2020, the earth’s rotation cycle will be shortened by 1.4602 milliseconds, the shortest record in nearly half a century. This phenomenon is not accidental. In the future, the earth’s rotation speed will continue to accelerate, and the earth’s rotation cycle will shorten by 0.05 millisecond in 2020.
As we all know, the earth towards the end of the sun and the moon, the gravity will be stronger, so there will be uplift. Although the mass of the moon is smaller than the sun, the moon is very close to the earth, so now the moon has been locked by the earth tide. When the earth rotates, the sea water will impact the coast. Due to the friction, the earth will continue to slow down, so the earth will be slower and slower. But the sun’s braking effect on the earth is still relatively weak, and the earth will not be locked by the sun’s tides.
Why does time get faster?
Therefore, the sun and the moon do not have a great influence on the earth’s rotation, so why does the earth’s rotation speed up? Scientists think this may have something to do with the earth itself. Earthquakes and volcanic eruptions are natural disasters on the earth. In fact, every earthquake means the acceleration of the earth’s rotation. Earthquakes will cause the earth to contract, so the rotation speed can be changed in a short time.
In addition to the earth itself, human activities have also led to changes in the quality of the earth. The glaciers in the north and south poles have begun to melt, which means that the balance of the earth has been broken, so the earth will accelerate. I don’t know what you think?