For Earth, the moon is its own satellite, and for Mars, the two brothers Phobos and Phobos are its own satellites. Whether Venus has satellites is still a very puzzling question in the astronomy community. Of course, when talking about this, many people may feel strange: This is

For the earth, the moon has its own satellite , and for Mars , there are Phobos and Phobos brothers to be their own satellites. Whether Venus has satellites is still a very puzzling question in the astronomy community.

Of course, when it comes to this, many people may feel strange: this is there, there is no, it is not, what is difficult to understand? Don't worry, this question has to start hundreds of years ago.

1, the mysterious Jin Weiyi

Episode 0 In 1686, French astronomers discovered Venus' satellite while observing Venus. At the same time, based on the astronomy knowledge at that time, it was inferred that the direct moon of Venus (Kim Weiyi) was 1,500 kilometers, which was much larger than Phobos of Mars. After

, the astronomer's discovery was confirmed by the astronomer and made subsequent research, including parameters, brightness and other aspects. However, in the 18th century, Jin Weiyi suddenly disappeared mysteriously. At first, people thought that it might be because of the observation angle problem that human observation of Jin Weiyi was blocked, so they mistakenly thought that Jin Weiyi disappeared. But I never thought that Jin Wei did not appear again for more than two hundred years after that. Therefore, this makes people have to doubt the authenticity of Jin Weiyi's existence. After all, Venus' satellite disappeared for more than two hundred years and there was no news.

Therefore, the modern astronomy community once questioned whether the discovery in 1686 was a misunderstanding. After all, the level of development of astronomy in the 17th century cannot be compared with that in the 20th and even the 21st century. However, some people also believe that: after all, the entire astronomy community confirmed the existence of Jin Weiyi, and left a bunch of written records. Is this possible?

But if it is impossible, how can I explain the disappearance of Jin Weiyi?

2, reproduce the solar system

However, in the past few years, Jin Weiyi's situation once again appeared in human sight. It turned out that humans observed through astronomical instruments that a small planet suddenly appeared on the inside of Venus, which orbited Venus. To this end, the astronomy community named the planet "2020AV2". Because of the discovery of this planet, people have a speculation about the truth about Jin Weiyi back then: that is, it is very likely that in 1686, a planet with unknown origin appeared near Venus and was eventually captured by Venus and became a Venus satellite. Since Venus' gravity is not enough to pull Jin Weiyi for a long time, several years later, Jin Weiyi was able to escape from Venus' gravity and disappear into the vast universe.

In fact, this situation of satellites due to planetary forces is very common in the history of the universe. For example, the astronomy community believes that in the future, Phobos of Mars may disappear due to the force of Mars. There are only two reasons for disappearance: one is that Phobos is torn apart by Mars and becomes the halo of Mars; the other is that Phobos hit Mars and becomes part of Mars. In addition, in the future, the moon will disappear. However, the moon disappeared because as the earth's force on the moon became weaker, this led to the distance between the earth and the moon becoming farther and farther. Therefore, as long as time goes by, the moon will inevitably break away from the force of the earth and disappear into the orbit of the earth.

Therefore, based on the situation of Phobos and the moon, it is not impossible for Venus to acquire satellites and lose satellites (note: In fact, some analysts believe that Phobos is likely to be a traffic planet captured by Mars).

3, Road to Destruction

However, the future of 2020AV2 (hereinafter referred to as Jin Weiyi) is actually not clear. Because cosmologists believe that as the universe continues to expand, Jin Weiyi is likely to leave the solar system under the force of expansion and become the wandering planet again . Or, because Jin Weiyi's orbit is not so compliant, it is likely to collide with Mercury or Venus, and eventually become a pile of fragments.