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Venus's rotation period cannot be determined by telescopes observing its surface markers, as its atmosphere is featureless. In the 60s of the 20th century, when Venus was closest to the Earth, the radar pulse was reflected back from Venus, and its rotation period was finally discovered, and the day on Venus was + - times the length of the Earth's day, but its rotation on its own axis was in the opposite direction compared to other planets. The aforementioned ** was taken by NASA's Magellan orbiter, whose radar imaging technology is capable of detecting surface features several kilometers wide.
If you are lucky enough to look down at the planets in our solar system from the "North Pole", you will see the planets orbiting the Sun counterclockwise while rotating counterclockwise around their axis of rotation, except for Venus. Venus rotates clockwise while moving counterclockwise around the Sun. But Venus is not the only exception, Uranus' axis tilts toward the plane of the solar system, and it rolls almost sideways as it orbits the sun.
What is the reason for the extreme tilt of the axis of rotation of Venus and Uranus? For many years, it was believed that Earth was to blame for this situation on Venus. Because of the curious fact that Venus rotates three times around its axis in a day, and the Earth rotates two weeks around the Sun (days), many astronomers believe that the Earth and Venus are tidally locked at 3:
2 orbital resonances. Many objects in the solar system seem to be locked in their respective orbital resonances, especially Jupiter's family of moons. Mercury also seems to be gravitationally locked in orbital resonance with the Sun, as Mercury also has a day (day) to a year (day) ratio of 2:
3。<> force acts on a rotating object to produce some singular phenomena. For example, if you push a spinning top, it will swing in a way known as "precession". The Earth's axis of rotation oscillates by tens of degrees over 26,000 years, which is entirely the result of the influence of the moon's tidal forces.
In the case of Venus, however, the slight gravitational pull it has experienced over the past billions of years has locked it into a 3:2 orbit with the Earth, but this force does not seem to be enough to cause the entire planet to rotate upside down.
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Venus is a terrestrial planet because of its similar mass to Earth, and is sometimes called Earth's"Sister star"。It is also the only planet in the solar system that does not have a magnetic field. Among the eight planets, Venus's orbit is the closest to a circle, and the eccentricity is the smallest, only.
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Venus is larger than other stars and has a high nitrogen content.
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Venus's atmosphere is almost entirely carbon dioxide, not nitrogen and oxygen, and its atmospheric mass is about 100 times that of Earth
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Venus has no magnetic field and has a high level of carbon dioxide in its atmosphere.
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Venus's trajectory is closest to a circle and is the sister planet of Earth.
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Its mass is closest to that of the Earth, and its trajectory is approximately that of a circle.
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He is rounder than the other planets.
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Venus is a terrestrial planet because its mass is similar to that of Earth, and of the eight planets, Venus has the closest orbit to a circle.
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Venus is larger than other stars.
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There is nothing special about it, each planet has its own nature.
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Venus, also called the White Star.
1. Venus is the closest planet to the Sun in the solar system, and the closest planet to the Earth. The orbital period of Venus is an earth day, in ancient times, our country called Venus Taibai Star, and the mass of Venus is about the same as that of the earth, so it is generally called the "sister planet" of the earth.
Venus has the closest orbit to a circle among the eight planets, and the eccentricity is the smallest, only.
2. Venus is very close to the moon with the naked eye, and Venus is the brightest planet in the whole sky, its brightness is generally solstice, it is 14 times brighter than Sirius, the brightest star except the sun, the difference is that Venus is a planet, and Sirius is a star.
Venus is like a dazzling diamond, so the ancient Greeks called Venus Aphrodite, and Aphrodite is the goddess of love and beauty in ancient Greece.
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Characteristics of Venus:
1. Venus is a terrestrial planet, because its mass is similar to that of the Earth, and it is sometimes called the "sister star" of the Earth.
2. It is also the only planet in the solar system that does not have a magnetic field.
3. Among the eight planets, the orbit of Venus is the closest to the circle, and the eccentricity is the smallest.
4. Venus is surrounded by a dense atmosphere and clouds. The surface temperature is up to 500 and the atmospheric pressure is about that of the Earth.
5. Venus rotates in the opposite direction to other planets, from east to west. Therefore, as seen from Venus, the Sun rises in the west and sets in the east.
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Characteristics of Venus:
1. Venus is a terrestrial planet, because its mass is similar to that of the Earth, and it is sometimes called the "sister star" of the Earth.
2. It is also the only planet in the solar system that does not have a magnetic field.
3. Among the eight planets, the orbit of Venus is the closest to the circle, and the eccentricity is the smallest.
4. Venus is surrounded by a dense atmosphere and clouds. The surface temperature is up to 500 and the atmospheric pressure is about that of the Earth.
5. Venus rotates in the opposite direction to other planets, from east to west. Therefore, as seen from Venus, the Sun rises in the west and sets in the east.
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Too white star.
i.e. Venus. The second planet in the solar system closest to the Sun and the closest planet to Earth. In ancient China, Venus was called Taibai Star, and when it appeared in the east in the morning, it was called Qiming, and when it appeared in the west at night, it was called Chang Gung.
When Venus enters and exits, the so-called "black drop" phenomenon may be detected by an attentive observer. In fact, when we look at the light, we gradually bring the two fingers closer, and when we are very close, we can see that even though the fingers have not yet touched, we can see that there is a shadow between the upper and lower fingers to connect them, as if there are water droplets between the fingers, which is the so-called "black droplet" phenomenon.
At the beginning of the transit and the end of the transit, that is, when the edge of the sun and the edge of the inner planet are very close to each other and about to touch, it will be found that there are very thin filaments connecting the two edges, which is the black drop phenomenon during transit. The cause is the blurring of the edge of the sight wheel caused by various effects such as the visual acuity of our atmosphere, the diffraction of light, and the "limit resolution" of the telescope.
On January 15, Venus, which is known for its brightness, will be very bright at a certain distance from the Sun, at great elongation to the east, and at sunset it will resemble a light hanging low in the southwestern sky. After that, it will approach the Sun relatively quickly, and two or three months later, Venus will appear as the morning star.
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Because the surface temperature of Venus is as high as 500 degrees Celsius, the detectors developed by humans cannot withstand such high temperatures, and the atmospheric pressure of Venus is very high, and there is no liquid water on the surface, which means that it is not suitable for life to survive, and there is no point in exploration.
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Because Venus is not suitable for human life, there is no need to explore it, and the environment of Mars and Earth is very similar, so no one explores Venus.
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Because the environment of Venus is too harsh, the current scientific and technological strength of human beings cannot explore it. Venus has a thick atmosphere, and the atmospheric pressure is very strong, 92 times the atmospheric pressure of the earth, and the height of the arch column under the atmospheric pressure of the earth is 760mm, and the pressure of 92 atmospheres is about 70m, which is equivalent to the pressure generated by an adult carrying a weight of 47t. This is because of such a harsh environment, which makes mankind's exploration of Venus full of despair.
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Probably because Venus is so uninhabitable to human beings, no one has explored it at all.
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Venus is also known as Taibai, Star, Qiming, Hyosung, Chang Gung, Dusk Star, etc. Venus, among the eight planets in the solar system, is the second planet outward from the sun, with an orbital period of heaven and no natural moons. Venus is an inner planet on the inner side of the Earth, it never orbits far from the Sun, and its maximum separation from the Sun is.
Venus is a terrestrial planet similar to Earth and is often referred to as Earth's sister star. <
Venus is also known as Taibai, Star, Qiming, Hyosung, Chang Gung, Dusk Star, etc. Venus, among the eight planets in the solar system, is the second planet outward from the sun, with an orbital period of heaven and no natural moons. Venus is an inner planet on the inner side of the Earth, it never orbits far from the Sun, and its maximum separation from the Sun is.
Venus is a terrestrial planet similar to Earth and is often referred to as Earth's sister star.
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Venus is a very beautiful celestial body. In the night sky, Venus glows with a dazzling white light, like a brilliant diamond. In the West, it is called the most beautiful goddess, Aphrodite, the goddess of love.
Venus has a dense atmosphere on its surface that wraps it tightly. Even large telescopes on Earth cannot see the true face of Venus. So all the secrets about Venus are unknown.
Until the 60s of the 20th century, the great progress of radio technology also created great convenience for the exploration of the astronomical field.
Astronomers have repeatedly measured the time it takes for Venus to orbit the sunEarth days, according to the custom on Earth, should be called a "Venus year". And the time for Venus to rotate one week isEarth days, which should be called a "Venus Day". It can be seen on Venus "One day.""Longer than "one year".
There is a popular saying among the people, "......."Unless the sun hits the west" to describe the impossible, which is indeed impossible on Earth. But in the vast and mysterious universe, right on Venus, the sun and stars rise from the west every day, pass the highest point above the earth's level, and set in the east. And the rotation direction is opposite to that of the Earth and other planets, from east to west.
It is not so easy to observe Venus on Earth, it often appears near the Sun, overwhelmed by the dazzling sunlight. Only when Venus is far away from the Sun can it be viewed. Venus at this time is either near the eastern horizon in the early morning or on the western horizon after sunset.
After September 2003, Venus gradually raised the Sun, the height of the Earth gradually increased, and the brightness gradually increased, and it can be seen in the low southwest sky after sunset.
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