What revolves around what? Who wins: Does the Earth revolve around the Sun or vice versa? that revolves around the earth.

For an observer located in the Northern Hemisphere, for example, in the European part of Russia, the Sun habitually rises in the east and rises to the south, occupying the highest position in the sky at noon, then tilts to the west and hides behind the horizon line. This movement of the Sun is only visible and is caused by the rotation of the Earth around its axis. If you look at the Earth from above in the direction of the North Pole, then it will rotate counterclockwise. At the same time, the sun is in place, the visibility of its movement is created due to the rotation of the Earth.

Earth's annual rotation

Around the Sun, the Earth also rotates counterclockwise: if you look at the planet from above, from the North Pole. Since the earth's axis is tilted relative to the plane of rotation, as the earth rotates around the sun, it illuminates it unevenly. Some areas receive more sunlight, others less. Due to this, the seasons change and the length of the day changes.

Spring and autumn equinox

Twice a year, on March 21 and September 23, the Sun equally illuminates the Northern and Southern hemispheres. These moments are known as the autumnal equinox. In March, autumn begins in the Northern Hemisphere, in the Southern Hemisphere. In September, on the contrary, autumn comes to the Northern Hemisphere, and spring to the Southern Hemisphere.

Summer and winter solstice

In the Northern Hemisphere on June 22, the Sun rises highest above the horizon. The day has the longest duration, and the night on this day is the shortest. The winter solstice occurs on December 22 - the day has the shortest duration, and the night is the longest. In the Southern Hemisphere, the opposite is true.

polar night

Due to the tilt of the earth's axis, the polar and subpolar regions of the Northern Hemisphere during the winter months are without sunlight - the Sun does not rise above the horizon at all. This phenomenon is known as polar night. A similar polar night exists for the subpolar regions of the Southern Hemisphere, the difference between them is exactly half a year.

What gives the Earth its rotation around the Sun

The planets cannot but revolve around their luminaries - otherwise they would simply be attracted and burned out. The uniqueness of the Earth lies in the fact that the tilt of its axis of 23.44 degrees turned out to be optimal for the emergence of all the diversity of life on the planet.

It is thanks to the tilt of the axis that the seasons change, there are different climatic zones that ensure the diversity of the earth's flora and fauna. A change in the heating of the earth's surface provides the movement of air masses, and hence the precipitation in the form of rain and snow.

The distance from the Earth to the Sun of 149,600,000 km also turned out to be optimal. A little further, and the water on Earth would be only in the form of ice. Any closer, and the temperature would already be too high. The very emergence of life on Earth and the diversity of its forms became possible precisely due to the unique coincidence of such a multitude of factors.

A person sees the Earth as flat, but it has long been established that the Earth is a ball. People agreed to call this celestial body a planet. Where did such a name come from?

Ancient Greek astronomers, who observed the behavior of celestial bodies, introduced two terms that were opposite in meaning: planetes asteres - “stars” - celestial bodies, similar to stars, moving along; asteres aplanis - "fixed stars" - celestial bodies that remained motionless during the year. In the beliefs of the Greeks, the Earth was motionless and was in the center, so they classified it as "fixed stars". The Greeks knew Mercury, Venus, Mars, Jupiter and Saturn, visible to the naked eye, but they did not call them "planets", but "wandering". In ancient Rome, astronomers already called these bodies "planets", supplementing the given one with the Sun and Moon. The idea of ​​a seven-planet system survived until the Middle Ages. In the 16th century, Nicolaus Copernicus turned his views on the device, noticing its heliocentricity. The earth, previously considered the center of the world, was reduced to the position of one of the planets revolving around the sun. In 1543, Copernicus published his work entitled "On the Revolutions of the Heavenly Spheres", in which he stated his point of view. Unfortunately, the church did not appreciate the revolutionary nature of Copernicus's views: his sad fate is known. By the way, according to Engels, "the liberation of natural science from theology" begins its reckoning precisely with the published work of Copernicus. So, Copernicus replaced the geocentric system of the world with the heliocentric one. The name "planet" for the Earth stuck. The definition of the planet, in general, has always been ambiguous. Some astronomers argue that the planet must be massive enough, others consider this an optional condition. If we approach the issue formally, the Earth can be safely called a planet, if only because the word “planet” itself comes from the ancient Greek planis, meaning “mobile”, and modern science has no doubts about the mobility of the Earth.

“And yet, she spins!” - this encyclopedic phrase, uttered by the physicist and astronomer of the past Galileo Galilei, we have known since school. And why is the earth spinning? In fact, this question is often asked by their parents as young children, and adults themselves are not averse to comprehending the secrets of the Earth's rotation.

For the first time, the fact that the Earth rotates around its axis was said in his scientific works at the beginning of the 16th century by an Italian scientist. But about the fact that rotation occurs, there has always been a lot of controversy in the scientific community. One of the most common theories says that other processes played a major role in the process of the earth's rotation - those that went on in time immemorial, when only education. Clouds of cosmic dust "came together" and thus the "embryos" of the planets were formed. Then other cosmic bodies were "attracted" - large and smaller. It is precisely the collision with large celestial, according to a number of scientists, that is the reason for the constant rotation of the planets. And then, according to the theory, by inertia they continued to rotate. True, if we take this theory into account, many legitimate questions arise. Why are there six planets in the solar system that rotate in one direction, and one more - Venus - in the opposite direction? Why does the planet Uranus rotate in such a way that there is no change in the time of day on this planet? Why can the speed of the earth's rotation change (slightly, of course, but still)? Scientists have yet to answer all these questions. It is known that the Earth has the property of somewhat slowing down its rotation. Each century increases the time of a complete revolution around the axis - by approximately 0.0024 seconds. Scientists attribute this to the influence of the Earth's satellite - the Moon. Well, about the planets of the solar system, we can say that the planet Venus is considered the “slowest” in rotation, and Uranus is the fastest.

Sources:

• Earth spins faster every six years - Naked Science

It is spherical, however, it is not a perfect ball. Due to the rotation, the planet is slightly flattened at the poles, such a figure is usually called a spheroid or geoid - "like the earth."

The earth is huge, its size is hard to imagine. The main parameters of our planet are as follows:

• Diameter - 12570 km
• Equator length - 40076 km
• The length of any meridian is 40008 km
• The total surface area of ​​the Earth is 510 million km2
• The radius of the poles - 6357 km
• Equator radius - 6378 km

The earth simultaneously rotates around the sun and around its own axis.

The earth rotates around an inclined axis from west to east. Half of the globe is illuminated by the sun, it is day there at this time, the other half is in the shade, there is night. Due to the rotation of the Earth, there is a change of day and night. The Earth makes one revolution around its axis in 24 hours - a day.

Due to rotation, moving streams (rivers, winds) in the northern hemisphere are deflected to the right, and in the southern hemisphere - to the left.

Rotation of the Earth around the Sun

The Earth revolves around the sun in a circular orbit, a complete revolution takes 1 year. The Earth's axis is not vertical, it is inclined at an angle of 66.5° to the orbit, this angle remains constant during the entire rotation. The main consequence of this rotation is the change of seasons.

Consider the extreme points of rotation of the Earth around the Sun.

• December 22- winter solstice. Closest to the sun (the sun is at its zenith) at this moment is the southern tropic - therefore, summer is in the southern hemisphere, winter is in the northern hemisphere. The nights in the southern hemisphere are short, at the southern polar circle on December 22 the day lasts 24 hours, the night does not come. In the Northern Hemisphere, the opposite is true; in the Arctic Circle, the night lasts 24 hours.
• 22nd of June- the day of the summer solstice. The northern tropic is closest to the sun, in the northern hemisphere it is summer, in the southern hemisphere it is winter. In the southern polar circle, night lasts 24 hours, and in the northern polar circle, night does not come at all.
• March 21, September 23- the days of the spring and autumn equinoxes. The equator is closest to the sun, the day is equal to the night in both hemispheres.

Does the Earth not revolve around the Sun? December 23rd, 2017

Probably, some of you have already managed to watch a video on the Internet with the eloquent title "The Earth does not revolve around the Sun." If you haven’t had time to get acquainted yet, then here they are at the beginning of the post and under the cut, the less informative first part. By the way, the first part has collected almost three million views.

Let's find out if there is a sensation here ...

If you look at how visitors to other sites reacted to the video, you begin to understand that in vain they stopped teaching astronomy in schools, especially for middle school children. "Professionals", by the way, also noted. On some sites, the content of this video was designed in the spirit of the news about the next discovery of scientists. True, given the quality of this very content, it turned out to be about the same as the show of the Uzbek “Gates of Hell” by the central channels, which passed them off as the crater of the Chelyabinsk meteorite. Remember, we discussed with you that

Speaking briefly about what he saw, the author takes well-known facts, exposing them in a favorable light (did everyone notice the portal's advertising at first?), while wrapping everything in the shell of "Sensation" and "Shock". According to the creator(s) of the video, it turns out that our planet does not revolve around the Sun! Moves, and she, and the Sun, and even the hair on your crown some kind of "spiral energy". As proof, the author gives several examples with spirals, including even a DNA molecule. As if for the circle of these same examples can not be found.

It should be noted here that our planet really moves in a spiral, and this is quite logical, because the Sun itself also does not stand still, but moves in outer space at a speed of 217 kilometers per second. Thus, passing its orbit and finding itself at the same point as a year ago, the Earth will be almost 7 billion kilometers from its previous position. If you look at all this from the side, then indeed the planet moves in a spiral. But this, excuse me, does not yet mean that the Earth does not revolve around the Sun. Gravity, for obvious reasons, has not yet been canceled.

The author, in fact, shows everything correctly, but presents it as a "deception of the authorities." Naturally, if society finds out that the Earth, hypothetically, does not revolve around the Sun (despite the fact that the luminary regularly rises in the east and sets in the west), then wars will begin in the world and chaos will reign. That's what the authorities are hiding. Comedy is no different. But most of all, the impudence with which all this is presented is amusing. The video says in plain text that "You will not find information about the movement of the solar system anywhere in our galaxy." And the saddest thing is that some people believe in it, which shows all the shortcomings of the modern education system. And all the arguments given by the authors are very well explained from a scientific point of view and break down into simple logic.

The material is correct. But the interpretation is false. Then we must say that the Moon does not revolve around the Earth. The knowledge of the authors is superficial, and the ability of analysis is close to zero. In gravitational systems, movement occurs relative to the center of mass along Elliptical trajectories. In the solar system, the center of mass practically coincides with the center of the sun, since the mass of the sun is something around 97-99% (I need to clarify, I don’t remember). But if the movement of the PLANETS is considered in the system of the galaxy, then their rotational movement around the Sun is superimposed on the general movement of the Solar System around the center of mass of the Galaxy, etc. And so it turns out, we can say that they hid from us that when we sit or lie, then in fact we are moving, and even with cosmic speed

But, it is worth noting that the videos themselves are made very high quality, from the constellation of Orion at the very beginning, to the musical accompaniment from the Two Steps From Hell group. On this, all the positive moments end. With their deduction, in the bottom line, we have destructive content that zombifies schoolchildren and other overly gullible personalities no worse than evening TV shows, so loved by almost the whole country.

In the course of its evolution, man has to overcome a number of delusions. This also applies to the brightest celestial objects - the Sun and the Moon. In ancient times, people were sure that the Sun revolves around the Earth. Then it turned out that the Earth revolves around the Sun. And to this day, almost everyone adheres to this statement, without even thinking about the fact that in fact it is not correct.

Any high school student can understand this. But because of the blinders of "conventional opinion" pulled over his eyes, even an outstanding student automatically submits to the mistaken majority. And, moreover, it is the excellent student who will be the first to rush to the offensive - to defend his blinkered knowledge: well, we see that the Moon goes beyond the horizon and then reappears, that is, the Moon makes a revolution around the Earth, which means it revolves around the Earth.

With the fact that the moon goes beyond the horizon and then returns again, no one argues. But after all, from the point of view of an observer located on the Moon, the Earth also makes similar walks - but already relative to the lunar horizon. So, a natural and logical question arises: which of the planets revolves around which planet? And one more thing: both the Moon and the Sun move around the sky in approximately the same way, so ancient people were sure that both celestial bodies revolve around the Earth. But it turned out that they move in different ways: the Moon - around the Earth, and the Earth - around the Sun. Although, as we have already said, both are wrong.

Now let's look at the right way. To understand the motion of the Moon, the Earth and the Sun, it is necessary to decide from what point of view we consider this situation. We will not delve into the options, we will only say that in the general case all celestial bodies will rotate (or perform other movements) around the celestial body on which the observer is located. And if we continue to adhere to such a position, it will again lead us to the wrong result.

To eliminate perception errors, it is necessary to get to the point that is actually in a stationary state and can be used as a "reliable" frame of reference. Such a point is the place where the Big Bang began (in the modern sense of this phenomenon). The first celestial object really revolves around this point - our Universe. And there really is a real movement in a circular orbit. So?

We return to the Sun-Earth-Moon system. It is impossible to consider the Moon and the Earth as an isolated resting system. The Earth moves at a very high speed, and this movement of the Earth must be taken into account. While the Moon is trying to run around the Earth "around", the Earth is shifting a considerable distance. Because of this displacement, in each single “turn” cycle, the trajectory of the Moon relative to the Earth never returns to its previous position, that is, it never closes in a circle or similar figure. Each subsequent point of the lunar trajectory is displaced in the direction of the Earth's movement with a speed equal to the geometric sum of the Earth's speed "around" the Sun and the speed of the Moon's movement "around" the Earth.

As a result, the Moon performs a complex periodic motion along cycloid . Exactly the same movement is made by any point of the wheel rim in relation to the surface of the earth. And the planet Earth in this example coincides with the position of the hub of the same wheel and moves relative to the earth in a straight line. You can approximately calculate the parameters of such a movement of the Earth, Moon and Sun.

Rice. The movement of celestial bodies: the trajectory of the Earth (straight line) and the trajectory of the Moon (cycloid). The numbers indicate the time axis on the scale of the Earth day sequence. It is also the direction of motion of the Earth-Moon system.

The distance from the Earth to the Sun is 1 AU. (astronomical unit) is the radius of curvature of the Earth's "orbit". It shows the order of the length of the trajectory on which the curvature occurs, similar to the curvature of the earth's "orbit". The distance from the Earth to the Moon is only 0.00257 AU. This value shows how many astronomical units the Moon can deviate from the course of the Earth in one direction or another across the translational motion of the Earth. This deviation is in the range of ±0.257% of the distance between the Sun and the Earth.

This means that the width of the lunar cycloid is only 0.5% of the distance between the Sun and the Earth. For comparison: if the distance between the Sun and the Earth is taken as 1 meter, then the beat of the Moon's orbit will be only 5 millimeters, that is, the Moon will move almost in a straight line, the width of which is 5 millimeters. Moreover, this line will not be closed.

Or maybe you want to know, or for example

Does the Sun revolve around the Earth or vice versa? given by the author Stripe the best answer is The Earth revolves around the Sun and makes a complete revolution around it in about 365.26 days. This period of time is the Sidereal year, which is equal to 365.26 solar days. The Earth's axis of rotation is tilted 23.4° relative to its orbital plane, which causes seasonal changes on the planet's surface with a period of one Tropical year (365.24 solar days).
The Earth moves around the Sun in an elliptical orbit at a distance of about 150 million km with an average speed of 29.765 km/sec. The speed ranges from 30.27 km/s (at perihelion) to 29.27 km/s (at aphelion). Moving in orbit, the Earth makes a complete revolution in 365.2564 mean solar days (one sidereal year). From Earth, the movement of the Sun relative to the stars is about 1° per day in an easterly direction. The speed of the Earth's orbit is not constant: in July it begins to accelerate (after passing aphelion), and in January it starts to slow down again (after passing perihelion). The sun and the entire solar system revolve around the center of the Milky Way galaxy in an almost circular orbit at a speed of about 220 km/s. In turn, the solar system as part of the Milky Way moves at a speed of about 20 km / s towards a point (apex) located on the border of the constellations Lyra and Hercules, accelerating as the Universe expands. Carried away by the movement of the Sun, the Earth describes a helix in space.

Answer from Lucy Pevensie[guru]
it was like the opposite...

Answer from Glamorous[expert]
the earth revolves around the sun

Answer from I-beam[guru]
It is strange that such questions should arise in our enlightened age. Relying on the fact of the Earth's rotation around the Sun, humanity went into outer space, launched ships to other planets. The Earth and the other seven planets, asteroids, comets, Pluto and other dwarf planets revolve around the Sun. The Sun, in turn, revolves around the center of our Galaxy, and it - around the center of a hypothetical Metagalaxy.

Answer from wild plants[guru]
Depending on where to look from, the Sun does not even spin like this from the Earth, but everything goes sideways in a semicircle.

Answer from Ivan Ivanov[guru]
Sell ​​a kidney, buy a brain

Answer from Badger[guru]
Does it spin?

Answer from AZIL GALIMOV[newbie]
the earth revolves around the sun

Answer from sleigh sonia sophia.[newbie]
not the sun but the solar system revolves around our galaxy correctly

Answer from Nadia Prokhorova[newbie]
where the world is going...

Answer from Yedor Bakholdin[newbie]
The Earth and the Sun revolve around a common center of mass.

Answer from Yergey Kravets[active]
degenerate or something, the sun stands still! The Earth revolves around it, it is alive, everything is alive here, even a tree, moreover, it also rotates at a certain speed, at a speed that will allow us to live on this Earth, and if the speed increases, the world will change, and there are such prerequisites. Then there will be not 24 hours in a day, and accordingly there will not be 365 days (if rounded) and all this will affect the human body, and indeed on people's lives. On Earth, there is still gravity, which contributes to all living things! If it were not for the world would disappear - everything would fly in space. I’m generally familiar with physics, astrophysics there at least a little, if not, get acquainted, it will be useful