Once the earth rotates, sunrise and sunset will appear, that is, one day. So the time we often talk about is still different from what scientists say. If the earth rotates for 24 hours, then a day will be 24 hours. If the earth accelerates, the time will be less and the time will be faster.
Many people feel that time is getting faster, so is it an illusion? No, because in recent years, the speed of the earth's rotation has indeed accelerated, which means that the time of day has become shorter.
If a planet has life, then the core part that maintains a planet is the core of the planet composed of dense matter. Once the core of the planet stops rotating, then in a sense, this planet becomes a dead planet.
In the early stages of the birth of the solar system, at least two planets in the habitable zone had the opportunity to give birth to life, one was the earth and the other was the Mars .
According to research data from the Mars rover in recent years, primitive life may have been born on Mars and Earth hundreds of millions of years after the birth of the solar system.
However, judging from the current results, the earth has undoubtedly succeeded, with countless creatures and species born, and humans have finally created the earth civilization today in the evolution process of millions of years.
A very important reason why Mars stopped nurturing life was that 3.9 billion years ago, a huge asteroid hit Mars, forming a span of 8,500 kilometers, the largest impact crater in the solar system.
This time, due to its huge impact, the core of Mars stopped rotating. Once the core of Mars stopped rotating, the magnetic field formed by the rotation and friction of the core eventually disappeared. After
lost the protection of Mars magnetic field , the water resources and atmosphere on Mars evaporated under the blowing of solar wind . The rivers and lakes that once appeared on Mars eventually left only the dry riverbed.
After Mars loses its magnetic field protection, cosmic rays enter the surface of Mars without any obstacles, directly killing the primitive life that may have been born. In the environment where life was lost and the death radiation of cosmic rays, Mars completely turned into a desolate planet.
If the above are just the impact of the planet kernel on life, then on the other hand, the planet kernel also has a very big impact on the planet itself.
In addition to orbiting a star, a planet itself also rotates, and inside the planet, the core of its planet will also keep rotating. This structure is large and small, just like the bicycle's transmission .
Then the earth's core may affect the earth's rotation speed. After the earth's rotation speed slows down, the speed required for one round will exceed 24 hours, and the time of day will slow down. After the earth's rotation speed accelerates, it takes less than 24 hours to rotate in one circle, so time will get faster for the creatures on the earth.
On June 29 this year, there was a record of the fastest rotation speed of the earth in 1969, which means that the shortest day in 53 years for creatures on Earth.
According to calculations, on that day, it was 1.59 milliseconds less than the standard 24 hours (86400 seconds). On July 26, the earth once again had a faster rotation speed and the time of day became shorter. However, this time it did not break the previous record because this day was 1.5 milliseconds less than 24 hours.
The last time the shortest record was July 19, 2020, when the fastest record in 1969 was broken, 1.47 milliseconds less than 24 hours, while in that year there were 28 days in total, less than 24 hours.
From the existing data, the earth's acceleration is getting faster and faster, from 1.47 milliseconds shorter in 2022 to 1.59 milliseconds shorter this year. So is the time of day getting shorter and shorter?
In the long run, the earth's rotation speed is getting slower and slower, that is, the time of day will be longer and longer. This is mainly affected by the tidal friction between the earth and the moon, as if a brake pad is braked on the earth's speed.
This is also confirmed from ancient coral fossils. Geologists calculated from the growth line of ancient coral fossils that 400 million years ago, there were 400 days on Earth a year, instead of the 365 days now. If the earth orbited around the sun, the earth would have to rotate 400 times. It can be seen that the earth's rotation speed was much faster than now.
If this is the case, why has the earth frequently accelerated in recent years?
This is because the earth is in a low-value period of large-period changes. Although the overall speed of the earth's rotation will slow down, there will also be periodic speeds in this process. According to experts' estimates, the current low-value period is from 2020 to 2023. During this period, the earth's acceleration will enter a maximum value, and then the earth will enter a periodic slowdown stage.
962-2022 changes in the earth's rotation
Conclusion:
Has the time on the earth shortened in recent years? Yes, because the earth's rotation speed has become faster. However, this shortening time is very different from the illusion that everyone thinks that time is shorter, because the shortening time is calculated in milliseconds, and 1 second is equal to 1,000 milliseconds, which is 1 or 2 milliseconds shorter, and for humans, there is no feeling. The reason why
feels that time has become faster is that short videos and entertainment information occupy too much time now, that is, too many meaningless things have been done. If you step out of your comfort zone and do something painful but meaningful, I can guarantee that you will feel that life is like years.
