The cycle of the universe is the number of days converted to the earth

I don't know if the landlord said that the process of the universe from birth to destruction is called a cycle, and now it is difficult for human beings to know how the universe should be destroyed, but there are a few guesses with a relatively large possibility, if you have to give an answer, haha, according to the more numbers on the Internet now, the age of the universe is now 14 billion years, and it can exist for 24 billion years. So one cycle is 38 billion years. (Actually, this is not the answer at all, it's just nonsense).

Since it should be an average of 3740 years, it should be an average of 3740 years for the earth to be destroyed! According to the Mayan Gregorian calendar, we are the fourth generation of civilization on earth, and the next civilization is after 2012! It's in the books!

It's still a mystery, you can think of it as x years, but it's definitely hundreds of millions.

It's a bold idea. Be creative, there is no right answer yet.

Your concept of cosmic cycles is vague because the term doesn't necessarily "exist" until now. Scientists have come up with new conjectures about the evolution of the universe – the cyclic universe, and the cosmic cycle in which you speak of the cyclical cycle of the universe.

Berlin, April 20 (Xinhua) -- According to a new issue of the German magazine "Science Illustrated", scientists recently proposed a model of the circular universe. The theory is that the universe will never end, but will be in a cycle from growth to death. The big ** is neither the beginning nor the end of the universe, but only the 'transition' of different stages of the universe.

Here's my understanding of it:

The theory believes that from the beginning of the universe to the final collapse, it is only a cycle of the universe, that is to say, the universe is in a continuous process of expansion, collapse, and then becoming a singularity, just like a trigonometric function, in a periodic change. That's all I can understand, if you still have any questions, you can search for it - "Circular Universe".

As for the "cosmic cycle" you mentioned, I don't dare to speculate, at least it's just a conjecture.

The Earth's orbital cycle is one year. The time it takes for the earth to revolve is one year. There are two distinct cycles in the Earth's revolution, the return year and the sidereal year.

The return year refers to the time interval between the two consecutive passes of the sun through the vernal equinox, that is, the time elapsed by the sun's center from west to east along the ecliptic from the vernal equinox to the vernal equinox, also known as the solar year.

Information on the revolution of the Earth

The revolution of the earth is a periodic circular motion, therefore, the speed of the earth includes two aspects: angular velocity and linear velocity. If we use the sidereal year as the Earth's orbital period, then the average angular velocity of the Earth's revolution is 360 degrees per year, that is, after 365 points 2564 days, the Earth orbits 360 degrees, that is, about 0.986 degrees per day.

We know that the vernal equinox and the autumnal equinox are equally divided to the ecliptic, and if the earth's orbital speed is uniform, then the time it takes for the sun to travel from the vernal equinox to the autumnal equinox should be the same as the time it takes for the sun to travel from the vernal equinox to the vernal equinox, each of which is half of the whole year.

Apparent sun from the vernal equinox through the summer solstice to the autumn equinox, the earth's rotation speed is slower, it takes more than 186 days, longer than half of the year, this is the summer half of the northern hemisphere and the southern hemisphere of the winter half of the sun from the autumn equinox through the winter solstice to the vernal equinox, the earth's rotation speed is faster, it takes 179 days, shorter than half of the year, this is the winter half of the northern hemisphere and the summer half of the southern hemisphere.

The period of the Earth's revolution is: 365 days, 6 hours, 9 minutes, 10 seconds, which is the time it takes for the Earth to make a 360° revolution around the Sun, which is called a sidereal year.

There is a problem with the past cognition, which cannot explain the problem that the direction of the Earth's axis does not change when it revolves around the Sun, and under the action of the Sun's gravity, the direction of the Earth's axis should also change, so that the direct point of light will not change, so there will be no change in the four seasons. So a year is not a revolution cycle.

Answer A Question Analysis: The true period of the Earth's revolution is the sidereal year, which is 365 days, 6 hours, 9 minutes and 10 seconds.

Test Center: This question examines the cycle of the Earth's revolution.

Comments: The key to solving this problem is to grasp the cycle of the earth's revolution and distinguish between the rotation period and the revolution period.

The cycle of the Earth's revolution is (one year).

The Earth's orbital cycle is 1 year, which is days to be exact.

The rotation period is 1 day, and the density is grams of cubic centimeters.

The moon is a month, and it is 27 days, 7 hours and 43 minutes.

The time it takes for the Earth to revolve around the Sun is the Earth's orbital period. Broadly speaking, the Earth's orbital cycle is a "year".

Because the period of the annual apparent motion of the Sun is the same as the period of the Earth's revolution, the period of the Earth's revolution can be measured by the annual apparent motion of the Sun. Observers on Earth observe the time interval between a certain point in the ecliptic of the sun in a row, which is a "year".

Due to the different reference points selected, the length of the "year" is also different. The sidereal year is obtained by using a constant and motionless star as a reference point, so it is the time when the Earth revolves 360°, which is the true cycle of the Earth's revolution. The sidereal year is 365 days, 6 hours, 9 minutes and 10 seconds.

Rotation

The average rotation period of the Earth relative to the Sun is called a mean solar day, defined as 86,400 seconds mean solar time (equal to si86, seconds).

As a result of the tidal deceleration, the solar days on Earth are now slightly longer than in the 19th century, 0 to 2 si ms per day. The International Earth Rotation Service (IERS), which measures the length of the average solar day from 1623 to 2005 and from 1962 to 2005 in the SI system of seconds, determines the length of the average solar day.

There are two cycles of the earth's rotation, one is based on the sun, called the solar day, and the time is 24 hours; A sidereal day is called a sidereal day, and the time is 23 minutes, 56 minutes, and 4 seconds. A sidereal day is the true cycle of the Earth's rotation.

There are two cycles of the earth's revolution, one is based on the old trillion coarse sun as a reference, called the return year, the time is 365 days, 5 hours, 48 minutes and 46 seconds;

One is based on a star, called the sidereal year guess, and the time is 6:09:10 on the 365th day. A sidereal year is the true cycle of the Earth's revolution.

The revolution of the earth means that the earth revolves around the sun in a certain orbit (theearthrevolutionaroundsun).

Just as the rotation of the earth has its own unique regularity, the rotation of the earth is caused by the gravitational field and rotation of Taishi Zhenyang. The rotation of the earth also has its own laws.

The laws of the earth's revolution are from the earth's orbit, the earth's orbital plane, the yellow-red angle, the period of the earth's revolution, the speed of the earth's revolution and the effect of the earth's revolution.

Generally speaking, the Earth's orbital cycle is 1 year.

To be exact, it is 365 days, 5 hours, 48 minutes and 46 seconds.

Therefore, the annual search is calculated as 365 days.

Every 4 years, there will be 1 more day of balancing.

Then there will be 1 more day in February every 4 years.

That is, February 29, which only occurs every four years.

The orbital period is the time it takes for a planet to revolve around a star or a satellite around a planet. The Earth's orbital period is a sidereal year of 365 days, 6 hours, 9 minutes, 10 seconds or days.

The Earth's rotation has two cycles, the sidereal day and the solar day, so is there only one cycle of the Earth's rotational motion in the return year? There are three cycles of the Earth's revolution around the Sun: sidereal years, perigee years, and return years.

1. Sidereal year: Taking a distant star as a reference, the duration of the Earth's orbit around the Sun 360 degrees, t=365 25636 days, it is the true cycle of the Earth's revolution. Only by using sidereal years can the angular velocity and linear velocity of the Earth's revolution be accurately and realistically calculated.

2 Perigee year: The Earth's orbit around the Sun is an elliptical orbit that is approximately perfectly circular, and the time interval between the Earth's center passing through the perihelion (or aphelion) in the orbit twice in a row is the period of change in the Earth's orbital velocity. This is the definition of the nearest year.

Since perihelion and aphelion move forward (11 seconds eastward every year), their length is (as shown in the figure below) perigee year: t = 365 25964 days longer than the sidereal year, the perigee year is also the cycle of the change of the distance between the sun and the earth, and it is also the cycle of the change of the value of solar radiation energy received by the whole earth, not the real cycle of the earth's revolution.

3 The return year is the cycle of the return movement of the direct point of the Sun, t=365 2422 It is 0 01416 days shorter than the sidereal year

The phenomenon that the return year is slightly shorter than the sidereal year is called precession, which is the result of the combination of the earth's revolution and the movement of the earth's axis, which determines that the position of the earth is not a fixed point, but a moving point that constantly moves westward on the reed skin of the orbital hall, resulting in one revolution of the earth is not equal to one week of latitude change of the direct point of the sun. Although the return year is not the real cycle of the earth's revolution, it is the cycle of seasonal changes on the earth, which is of great significance to human beings, and the concept of "year" in our life usually refers to the return year, and the specific annual calendar in the solar calendar is arranged according to the return year, which has become the focus of our learning. It is recommended that you check the rotation of the Earth.

Entry. The above content is a copy of some of the content of this entry, and there is a lot more in this entry that is well worth reading.