In our daily life, the sun is an important factor to maintain life. We have all heard the story of Houyi shooting at the sun. In ancient legends, there were ten suns in the sky at first, because the existence of ten suns would make people miserable and crops could not grow, so Hou Yi shot off nine with one arrow. With the development of science and technology, we also know that the story of Houyi shooting at the sun is not true. Through the research of scientists, it is really possible that there are two suns in the solar system.

According to a research paper published by astrophysicist Loeb, there used to be two stars in the solar system, that is, a binary system. However, under the influence of some factors, a star finally left the solar system, leaving only the present sun. Scientists have also studied and investigated the truth and reasons of the whole thing.

In fact, in the research of scientists, there is a multi-star system in the universe, so it is reasonable to have two stars in the solar system. Just like the nearby galaxy, this galaxy is a triple galaxy. In astronomy, if there are two stars in a galaxy, it is called a connected star system. It is now known as a conjoined star system, including Nanhesan, Sirius and Cygnus X- 1. Generally, star systems are called according to the number of stars, such as the triad system.

In the observation of scientists, because the gravitational force or some kind of energy produced by celestial bodies is the same, the more the stars get together, the more unstable the interior is. In our solar system, more than 70% of the star systems are multi-star, so it is difficult to say whether there are two stars in the solar system, but according to the reasons for the existence of celestial bodies and asteroid belts in the solar system, the "charm" of the sun does not seem that great.

1932, astronomer Aupic proposed that the source of comets was the cloud cluster at the edge of the solar system, which was later called Oort cloud. With the development of astronomy, many astronomers began to pay attention to Oort Cloud. According to observations, there are a lot of rocks, ice and other substances in the Oort cloud area. Because the number is too large, scientists believe that it is impossible for the sun to form alone, so the saying that the solar system is the second sun has also been mentioned again.

Scientists have also given many conjectures about the second star in the solar system. Among them, some scientists believe that the two stars in the solar system will attract all the substances in the solar system through the tension net, and through the attraction of substances, the Oort cloud will eventually be established. However, some scientists believe that the Oort cloud is formed by the debris produced by the disintegration of the second star. Neither of these hypotheses can prove right or wrong, but they are closely related to the second star.

If there really is a second star in the solar system, why did this star leave? On this issue, some scientists speculate that a celestial body with a mass greater than two stars passes through the solar system, and then strong gravity takes away the second star. However, some scientists believe that the disappearance of the second star is caused by the gravitational perturbation of the Milky Way. At that time, the second star disintegrated when it was attracted, and finally the Oort cloud was formed.

Scientists need more evidence to prove the existence of the second star. However, in the northeast of China, there are two suns. Later, the Meteorological Bureau explained that the two suns were caused by the existence of ice crystals in the thin clouds, and then the ice crystals formed refraction, which eventually produced the illusion of two suns. The meteorological bureau said that the illusion of two suns is rare, so the friends you see are lucky.