Venus has an apparent magnitude of around 4, can it be seen with the naked eye on Earth?

Yes. Venus is the brightest star that can be seen on Earth except for the Moon, and at dawn it appears in the night sky to the east.

Of course, it is impossible to see Venus with the naked eye, and the universe is very mysterious and well worth exploring.

It should be possible, because the brightness is relatively high, so it is still relatively clear, but few people can see it in the city.

No, you can't see it directly from the naked eye, and this planet is very far away, probably hundreds of thousands of light-years away.

Of course it can't be seen, because Venus can't be seen at all in outer space.

Yes, you can see it. On a sunny night, the star that shines in the western sky is Venus.

Venus can be seen on Earth. In addition to being known as the twin brother of Earth, Venus also earned the title "Hyosing" or "Evening Star" for its unusually bright presence in the sky. When you look at the dim sky, it's easy to see this with the naked eye.

Without any equipment, you can see Venus shining among the many stars and celestial bodies.

Observe the direction of Venus.

Venus, which is the closest planet to Earth (sometimes Mars is closer). It appears in the eastern sky early in the morning called "enlightenment"; In the evening, it is called "Chang Gung" and is located on the west side of the sky. It reaches its brightest shortly before sunrise or after sunset, and its brightness is second only to the moon in the night sky.

Ranked second. Because Venus rotates in reverse; The sunrise on Venus is in the west and the sunset is in the east; The alternation of day and night from one sunrise to the next is just a day on earth. The maximum angle of view of Venus from the Sun on Earth does not exceed 48°, so Venus does not appear in the night sky all night.

Chinese folks call Venus at dawn the morning star.

Venus in the evening is the star of Chang Gung.

Venus is one of the planets in the solar system, so its position is constantly changing over time. When observing Venus from Earth, it can be seen to appear in the west or east of the sky around sunset or sunrise, depending on its position in its orbit. When Venus is farthest from the Sun, that is, at its brightest at night, it usually appears in the western sky.

Conversely, when Venus is located close to the Sun, it will appear in the eastern sky just before sunrise or after sunset.

Venus is the brightest star seen on Earth.

Venus (English, Latin: venus, astronomical symbol: ) is the second planet from the Sun outward among the eight planets of the solar system, with an orbital period of heaven and no natural satellites.

Venus was called Taibai, Xingxing or Da Huan in ancient China, and its appearance in the east in the morning was called Qiming, and its appearance in the west in the evening was called Chang Gung.

In the Western Han Dynasty, Sima Qian, the author of the "Historical Records of Tianguanshu", found that Taibai Honghao was white from actual observation, which was associated with the "Five Elements" doctrine, and officially named it Venus. The English name is derived from Venus, the goddess of love and beauty in Roman mythology, and the ancient Greeks called Aphrodite, who is also the goddess of love and beauty in Greek mythology. The astronomical symbol of Venus is represented by the vanity mirror of Venus.

Venus is the second brightest celestial object in the night sky after the Moon, and its apparent magnitude can reach enough to cast a shadow on the ground. Since Venus is an inner planet on the inner side of the Earth, it never orbits far from the Sun: 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.

It has the thickest atmosphere of the four terrestrial planets, more than 96% of which is carbon dioxide, and the atmospheric pressure on the surface of Venus is 92 times that of Earth. With an average surface temperature of 735 K (462 °C), it is the hottest planet in the solar system, hotter than Mercury, the closest planet to the Sun.

Venus is covered in a layer of highly reflective, opaque sulfuric acid clouds, blocking visible light from space that may reach the surface. It may have had oceans in the past, but it evaporated as the runaway greenhouse effect caused the temperature to rise. 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 blown away by the solar wind and escapes into interstellar space.

On September 15, 2020, scientists detected the presence of phosphine in the atmosphere of Venus, which may be a sign of extraterrestrial life.

You can see it. Venus is a terrestrial planet because of its similar mass to Earth, and is sometimes referred to as 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, the orbit of Venus is the closest to the circle, and the eccentricity of the curvature is the smallest, which is only.

If you take the Earth as one of the vertices of the triangle and connect Venus and the Sun respectively, you will find that this angle is very small, even at the maximum, because the orbit of Venus is on the inner side of the Earth's orbit. Therefore, when we see Venus, it is either early in the morning or late in the evening, and it is on the east and west sides of the sky, respectively.

Venus is only slightly smaller than Earth——— and Venus also has a dense atmosphere! The atmosphere of Mars is too small due to its own gravitational pull (Mars' gravitational pull is only 38% of that of the Earth), which is basically blown away by the solar wind, and there is only a thin layer. The intense greenhouse effect combined with Venus's strong air pressure makes it the hottest planet in the solar system, with temperatures of up to 500, enough to melt lead, making it a veritable purgatory.

The average temperature can reach about 400 degrees Celsius, Venus is such a hot natural environment, on the one hand, some parts of the artificial space flight probe, can not withstand such a high temperature environment, will occur or deformation, or expansion, or melting physical phenomena, Venus is not only devastating for the probe, but also for human beings, so scientists have been repeatedly disappointed on the road to explore Venus, until despair. This will turn to the next best thing and start the targeted exploration of Mars and Venus.

Overcoming the harsh heat of Venus requires more effective thermal protection than landing on Mars. In addition, even if it makes a safe landing on the surface of Venus, the probe will only survive for a few hoursThe atmosphere of Venus contains toxic gases such as sulfur dioxide, and because the atmosphere of Mars is very thick, lightning and thunder are often flashed, and sulfur, hydrogen, and oxygen are synthesized into terrifying compounds --- sulfuric acid in these ionization reactions. So, there will be acid rain on Venus.

Venus's atmosphere is very thick, the basic component is carbon dioxide, sunlight can enter, but it is difficult to dissipate heat, so the surface of Venus continues to heat up, the current average temperature of the surface of Venus is more than 400 degrees Celsius, and the thick atmosphere has also triggered a violent atmospheric pressure, secondly, because the atmosphere of Venus is very dense, of which carbon dioxide accounts for about 96%, and the atmospheric pressure near the ground is 90 times that of the earth, and there are clouds of sulfuric acid in the atmosphere of Venus.

Because Venus is not suitable for human survival and development, and there is no water and oxygen, although it is close, there is no point in exploration.

Because the environment on the surface of Venus is particularly dangerous, and Venus is not suitable for human life, it was not chosen to land on Venus first.

Because the environment of Venus is too harsh. There is a thick layer of sulfur dioxide gas on the surface of Venus, which makes the average ground temperature of Venus about 500, so that the exploration machine can not work stably on it, and the pressure of Venus is very large and more than 90 times that of the Earth, which will accelerate the damage of the machine.

Because according to the current research results, Venus may not be suitable for human habitation, so people have not chosen to land on Venus first.

Maybe it's because Venus doesn't have much research value, because it's not very suitable for human habitation at all.

Venus is not of much value for study. Compared to Mars, Venus has a very harsh environment. Venus's atmosphere is filled with toxic gases. There are simply no conditions for life to appear.

The main reason is that the environment of Venus is not particularly suitable for humans, so humans did not choose to land, but chose Mars.

Venus is the closest to Earth, so why don't humans land on Venus?

Venus is one of the eight planets in the solar system, and its orbit is between Mercury and the world. It appears in the eastern heavens of China every morning and is known as the morning star. Although the name of Venus contains a good word, it is not everywhere on Venus**.

Closest to Earth, Venus was the first planet in the solar system to be detected by humans. In the 60s of the last century, the United States, Russia and other countries began to detect Venus, and so far more than 40 detectors have been sent to Venus, of which nearly half of the detectors are all sent by the former Soviet Union.

In 1970, the Venera 7 probe sent by the former Soviet Union successfully reached the surface of Venus, becoming the first human probe to land on Venus. In 1978, the Soviet Union's Venera 10 and 11 also completed the surface landing of Venus, and each worked for 110 minutes in the extreme and harsh environment. Unwilling to be left behind, foreign countries sent the Forerunner 1 and 2 detectors in 1978.

The former Soviet Union has launched a number of Venus probes one after another.

After a long period of practical exploration, experts have obtained a large amount of data on Venus. According to the information transmitted home by the probe, although the mass and volume of Venus are a little smaller than that of the Earth, the atmosphere on the surface of Venus is extremely dense, and the atmospheric pressure on the surface is 90 times that of the Earth, which is equivalent to the pressure in the deep sea within 900 meters. Ninety-seven percent of Venus's air is carbon dioxide, which has contributed to unprecedented global warming, pushing the average surface temperature of Venus to over 450.

The surface of Venus is very hot because of the ambient temperature, so there is no liquid.

Venus is a large planet with the highest number of active volcanoes on the planet in the solar system. Active volcanoes emit a lot of toxic gases into the air and obscure the sky of Venus, reflecting 60% of the sun's radiation into outer space, but even so, the surface temperature of Venus is still very high. Sulfur dioxide in Venus's air fuses with water vapor in the atmosphere to form clouds of hydrochloric acid, which make the sky of Venus look orange all the time.

In addition to this, there is also a lot of thunder and lightning on Venus.

In the early days of the exploration of Venus, the probes had not yet reached the surface of Venus, and were either flattened by atmospheric pressure or damaged by continuous high temperatures. In such a harsh environment, it seems that only no detector can log in to Venus, and with the current technical strength, if a passenger logs in to Venus, it is basically gone. If human high-tech reaches a certain level, it is feasible to carry passengers to Venus.

At this stage, human submarine detectors have been able to dive to 10,000 meters of seabed. The deepest ocean trench on Earth is the Mariana Trench, and the pressure at the top of the seabed is 1,100 times higher than the atmospheric pressure on Earth. If the Venus probe could be under pressure, it should be able to persist on the surface of Venus for a little longer.

Because of the sulfuric acid on the Venus, the equipment also needs to have a strong level of corrosion resistance. In addition, in a high temperature environment of more than 500 degrees, it is the top priority to protect against continuous high temperatures, to ensure the normal operation of the machinery and equipment in the cabin, and to ensure the personal safety of astronauts.

The Soviet probe that reached the surface of Venus, and the data transmitted back to Earth showed that the surface temperature of Venus was as high as 450 and the pressure was as high as 90 atmospheres; Several Soviet probes that landed on the surface of Venus were scrapped after not long in life, including Venera 13, which photographed the surface of Venus in color for the first time**.

After dozens of failures and disappointments, scientists have figured out the surface environment of Venus, high temperature and pressure, strong acid, accompanied by thunder and lightning, which is not suitable for life survival at all, nor is it suitable for human probe landing.

The temperature on the surface of Venus is very high, and near the equator, the temperature on the surface of Venus can reach as high as 500 degrees Celsius, and the probes developed by humans cannot withstand such high temperatures.

After all, in the process of exploration, it is necessary to study different equipment, and it is also necessary to understand the development of the planet and the climatic conditions of the planet, and in the process of exploration, it costs a lot of money, and the exploration process will encounter a lot of difficulties.