When is Venus brightest? Why is Venus particularly bright?

On January 12 of this year, Venus is at its greatest eastern elongation. Since then, Venus has become brighter and brighter. The brightest appearance of Venus on the eastern side of the Sun will occur tonight.

If you observe it from an area around 40°N, Venus will reach 38° above the horizon at sunset today. Later in the day, Venus will be lowered in altitude, but it will appear brighter. Kou Wen introduced that some enthusiasts have done experiments, and in the absence of light interference in the wild, Venus can shine a human shadow.

This year, the public will be able to see Venus at its "greatest elongation" twice and Venus at its brightest twice. After the brightest of this time, on March 25, Venus will be conjunct and travel between the Earth and the Sun; On April 30, Venus reaches its brightest again, up to and including; On June 3, Venus is at its greatest western elongation. Cowen told reporters that when observing the dynamics of Venus, you can pay attention to interesting changes in its shape:

At its greatest eastern elongation, Venus is farthest from the Sun, and it is in a 'first quarter moon' shape. After that, Venus slowly moves closer to the Sun. The closer it is to the Sun, the larger the 'head' of Venus and the thinner the 'crescent'.

Therefore, if you take an astronomical telescope to observe Venus tonight, you can see that it is as petite and cute as a "little crescent". Cowen said that the change in Venus's aspect was more pronounced and drastic only in the first half of the year, after which it was difficult to observe. <>

Venus is the brightest natural object in the entire sky besides the Sun and Moon, and the only star that can be seen during the day. In ancient China, it was called "Taibai". When it appears in the morning, people call it the "Morning Star"; When it appears at dusk, people call it "Chang Gung Star".

The brighter stars in the sky are Jupiter and Venus. If you look at Venus, it must be circling around the sun not far away, and it must be seen near the sun before sunrise or after sunset, and its brightness can be described as dazzling.

Jupiter, on the other hand, is an outer planet, and it can be very far away from the Sun, even separated from the Sun on both sides of the sky as it is now, which is significantly different from Venus. Therefore, if anyone who says that the bright star of the recent night is Venus, it is a blind guess, and it is completely unreasonable.

To see Venus conjunct the Moon, it must be seen after sunset or near the Sun. <>

Because the surface of Venus is always covered with a thick layer of white clouds, clouds reflect light more than rocks, so Venus looks particularly bright.

Part of why Venus is so bright in the night sky is its atmosphere.

Its "atmosphere" is very dense, with more than 95% of its composition being gaseous carbon dioxide.

The rest is nitrogen. This means that Venus can conserve most of its heat energy and is about 40 million kilometers closer to the Sun than Earth, so it can get more heat. The surface temperature can easily reach 700 °C.

Venus is very similar to Earth in both size and mass. Mars is basically the closest planet to Earth. But because it is larger than Mars and closer to the Sun, it is the brightest celestial body in our sky.

This is because Venus is covered in a highly reflective, opaque cloud of sulfuric acid, blocking possible surfaces from spaceVisible light

It may have had oceans in the past, but with runaway greenhouse effects.

This causes the temperature to rise and all of it evaporates. Water is most likely to be decomposed into hydrogen and oxygen by photoinduced metamorphosis due to the lack of planetary magnetic fields, while free hydrogen is broken down by the solar wind.

Blow away and escape into interstellar space.

On September 15, 2020, scientists detected phosphine in the atmosphere of Venus.

exists, which may be a sign of the presence of extraterrestrial life.

Revolution of Venus.

The direction of the rotation of Venus on its axis is related to the solar system.

Within most of the planets are opposite. Venus orbits the Sun with a period of days and a half-major diameter of about 108.5 million kilometers. Although all planetary orbits are elliptical, the eccentricity of Venus's orbit is less than that when Venus's position is between the Earth and the Sun, it is called a hypoconjunction.

The average distance to Earth is 41 million kilometers, with an average conjunctions occurring every 584 days. Since the eccentricity of both the Earth's orbit and the Venus's orbit decreases, the closest distance between the two planets gradually increases. During the period of high eccentricity, the distance between Venus and the Earth can be as close as 38.2 million kilometers.

The above content reference:Encyclopedia — Venus.

The thick clouds make Venus particularly dazzling because of its reflective rate of 76. Venus, known as "Taibai" or "Taibai Star" in Chinese folklore. In ancient mythology, the "Tai Bai Xing" was a celestial god.

The ancient Greeks called Venus "Aphrodite" and was the goddess of love and beauty. The Romans called this goddess "Venus", so Venus was also called Venus. Aside from the Sun and Moon, Venus is the brightest star of the day, at its brightest and 14 times brighter than the famous Sirius (the brightest star of the day except the Sun).

Venus has no moons, so there is no "moon" in the night sky over Venus, and the brightest "star" is the Earth. Due to its relative proximity to the Sun, the Sun is twice the size of what you see on Earth when viewed from Venus. Some people say that Venus is the twin sister of the Earth, and it is true that, structurally, Venus and the Earth have a lot of similarities.

The radius of Venus is about 6073 km, only 300 km smaller than the radius of the Earth, the volume is times that of the Earth, and the mass is 4 5 times that of the Earth;The average density is slightly less than that of Earth. But the environment is very different: Venus's surface temperature is very high, liquid water is absent, and with the brutal natural conditions such as extremely high atmospheric pressure and severe hypoxia, it is impossible for Venus to have any life.

Therefore, Venus and the Earth are just a pair of sisters who are "inseparable". In the atmosphere of Venus, carbon dioxide is the most abundant, accounting for more than 97. At the same time, there is a thick cloud of concentrated flow acids up to 20 to 30 kilometers thick.

The surface temperature of Venus is as high as 465 to 485 degrees, and the atmospheric pressure is about 90 times that of Earth. Venus's rotation is very special, it rotates in the opposite direction to the other planets, from west to east. Therefore, as seen from Venus, the Sun rises in the west and sets in the east.

It takes 243 days to rotate around the planet, but a day and night on Venus is extraordinarily long, equivalent to 117 days on Earth, which means that there are only "two days" in a "year" on Venus, and only two "sunrises" can be seen in a year. Venus's orbit around the Sun is a very close to a perfectly circular ellipse, with an orbital speed of about 35 kilometers per second and an orbital period of about days.

First of all, Venus is a planet, not a star.

So his light does not come from the celestial bodies themselves emitting light from within.

According to its geographical location, it is known that it does not belong to frictional combustion or reaction, and according to scientists' remote surveys, the surface of Venus is always covered with a thick layer of white clouds or something similar to fog.

In contrast to other planets, the rest of the light is reflected through rocks.

Clouds reflect light more than rocks, so Venus appears so bright that it can sometimes be seen even during the day.

So Venus is particularly bright.

Venus has a thick atmosphere. The ability to reflect sunlight is relatively strong. And.. Venus is close to the Earth.

Venus, in ancient China, was called the platinum star. This is because it is the brightest planet we can see with the naked eye in the night sky, with magnitudes up to at its brightest, and it is the brightest white star of the whole day, except for the Sun and Moon. Venus is so bright because it is surrounded by a thick atmosphere that reflects three-quarters of the sun's light.

Venus is closer than the Earth to the Sun, about 108.2 million kilometers, and it takes days to orbit the Sun. Interestingly, its rotation period is actually as long as a day, which is longer than its revolution period; That is, a day on Venus is longer than a year. Venus is similar to Earth in many ways:

It has a diameter of kilometers, about 95% of the diameter of the Earth; Its average density is close to that of Earth, only 5% smaller; Its mass is 82% of that of the Earth, and its escape velocity is 93% of that of the Earth; It is also, like the Earth, encased in a thick layer of atmosphere. It is this atmosphere that acts like a thick veil that hides the true face of Venus. Until 1954, it was believed that there was an ocean on Venus.

In 1956, the American astronomer Richardson analyzed the radar waves returning from the surface of Venus and found that Venus, unlike most of its other brothers, rotates in the opposite direction of its revolution and is clockwise, turning from east to west, that is, if you look at the sun from Venus, the sun rises in the west and sets in the east. People don't understand why there is such a "rebel" as Venus, who is also a son of the sunAt this point, Venus, the masked planet, has been heavily painted with a mysterious color.

Venus, which appears in the western sky in the evening, is called Chang Gung Star, and the eastern sky in the morning is called the Morning Star.

Before and after the dawn, a particularly bright "morning star" is sometimes seen on the eastern horizon, it is not a light source, people call it "morning star"; And at dusk, a very bright "evening star" sometimes appears in the western afterglow, which is called "Chang Gung star".These two stars are actually one, Venus, which is called "Taibai" or "Taibai Star" in Chinese folkloreThe first morning star Venus comes out every night.

Because Venus is a mainland planet and its orbit is inside the Earth's orbit, it will either appear at dawn or in the evening. Now Venus appears in the evening. Venus is often mistaken for UFOs.

Venus is the brightest object in the night sky other than the Moon, because it is so bright that it leads quite a few people to think that it is not a star, and its brightness is far beyond the brightness of other stars we usually see (including stars and planets), and many, many people will say "definitely not a star" in a convincing tone, but it is a star. <>

Venus before dawn is less misidentified, because the average person has not yet gotten up, and the Venus that appears in the western sky at dusk is more misidentified, most people do not sleep, there are more people outside, more people see it, and there are more cases. Because Venus is very bright and there is no reliable reference at night, it is common to judge its distance very inaccurately when you see it, some of which are hundreds of meters. Every year, there are a large number of UFO cases of misidentification by Venus.

If you have some basic astronomical knowledge, you can judge it at that time, if you don't have the corresponding knowledge, if the weather is good the next day, you can continue to observe, or even observe it for several days in a row, and this bright object appears in the east of dawn or the west of dusk in the approximate time and approximate direction, and the object moves slowly and roughly westward with time, it should be Venus. 、

Many people have seen the brightest star next to the moon at this time of the yearThat isVenus. Because Venus is located in the Earth's orbit and sometimes appears in the early morning and sometimes at dusk, there is a saying for morning and evening stars. In the ancient books of our country, there is a saying that "there is Qiming in the east and Chang Gung in the west", which refers to Venus.

When Venus rises in the east before dawn, it is what we see and what we often call the morning star, and when it appears in the west at dusk, it is Chang Gung Star. But in ancient times, Venus at that time was called the Platinum Star.

Mankind's understanding of the solar system began with Venus. The Moon is about 380,000 kilometers away from Earth, while Venus is only 50,000 kilometers away. Venus is about the size of the Earth, with a mass of 82% of the Earth.

Because of the rotation of the earth and the rotation of the moon around the earth, it takes 225 days for Venus to revolve around the sun, so that when we look up at the starry sky on the earth, we will see that the moon moves faster than other planets, and when the moon moves near Venus, there is an astronomical phenomenon of "Venus with the moon". Venus is the neighbor of the Earth and is the brightest planet except for the Sun and the Moon. It's also a star that we can see with the naked eye.

When the Moon and Venus coincide, there is a phenomenon called "Venus conjunction the Moon". This astronomical phenomenon occurs every 30 days. Because of the distance of Venus, Venus is the brightest planet, and we can see this wonderful astronomical phenomenon with the Moon in most cases.

The phenomenon of Venus conjunct the moon because Venus is too close to the earth, the city is easy to be blocked by high-rise buildings, astronomy enthusiasts can choose to go to the open outdoors on a sunny day. The phone can capture the beautiful moments of the two together.

In ancient times, due to the lack of scientific understanding of the appearance of Venus and the moon, they believed that this phenomenon was a great omen, indicating a military disaster or human death. A lot of metaphysics came into being. With the improvement of the level of scientific development, human exploration of space is also increasing, completely breaking the saying that the meaning of Venus conjunction and the moon is ominous, but modern people have given a better meaning to the phenomenon of Venus with the moon than the ancients, and many people think that Venus with the moon is a symbol of love and romantic.

Venus and the moon are symbolized by modern people as cherishing the people in front of them, and many lovers will promise each other and make promises under the stars.