The Earth breaks a new record: it had its shortest day since there are records

NEW YORK.- As if running a race against itself, Earth just broke the record for the shortest day since records beganaccording to a scientific measurement where it is also revealed that The planet has been spinning unusually fast for a few years now.

As indicated by the specialized platform Time and Date on its website, based on the atomic clocks that measure the rotation speed of the planet, On June 29, a full turn was recorded in 1.59 milliseconds less than 24 hours.in the latest in a series of records since 2020.

The Earth rotates once every 24 hours, which is why the Sun appears to rise and set every day. However, within this general pattern, the rate of turn fluctuates. From day to day, the time it takes to complete a rotation increases or decreases by a fraction of a millisecond.

Scientists who study the Earth’s rotation use the term “daylength” to refer to how slowly or fast the Earth rotates. As the length of the day increases, the Earth rotates more slowly. When it decreases and becomes a negative number, the Earth spins faster.

There are about 400 atomic clocks in the world, spread over 70 laboratories in various countries.BBC World

In recent decades, Earth has become more likely to slow down, with slightly longer days. But in recent years, that trend has been reversed and the days have been getting shorter and shorter.

In 2020, Time and Date reported that the Earth had reached its shortest 28 days since accurate daily measurements with atomic clocks began in the 1960s. The shortest day of all in 2020 was -1.47 milliseconds on July 19.

Earth continued to spin rapidly in 2021, although the shortest day of the year in 2021 was fractionally longer than in 2020. Now, in 2022, things have picked up speed again. On June 29, Earth set a new record for the shortest day of the atomic clock era: -1.59 milliseconds. Earth came close to breaking its record again the following month, recording a day length of -1.50 milliseconds on July 26.

The spin that we experience as night and day does not always occur exactly in line with its axis, the line between the north and south poles. The phenomenon happens because, in reality, our planet is not a perfect sphere.

Specifically, the Earth has a bulge at the equator, while the poles are slightly squashed, which means that our planet has a slightly elliptical shape. Other factors can also interfere with the spin, such as ocean tides and the moon’s gravity.

It is important to keep track of the speed of the Earth so that the atomic clock can remain accurate to accurately coordinate GPS and Earth observation satellites.
It is important to keep track of the speed of the Earth so that the atomic clock can remain accurate to accurately coordinate GPS and Earth observation satellites.

Leonid Zotov, a professor of mathematics, believes that the Earth may be spinning faster due to periodic motion called “Chandler Wobble”. The wobble was first detected in the late 1880s, when astronomer Seth Carlo Chandler noticed the poles moving over a period of 14 months.

This wobble began to decline in the early 2000s, reaching record lows since 2017, the Telegraph newspaper reports.. And between 2017 and 2020, “disappeared”Zotov told Time and Date.

Planetary oscillations do not alter too much in everyday life. Although they are not very influential, it is important to keep track of them so that the atomic clock can remain accurate to accurately coordinate GPS and Earth observation satellites.

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