It is said that Sirius is of great significance to mankind. What's the point?

In ancient China, Sirius was not a good horoscope, and the brightness change of Sirius meant the security of the border. Therefore, for the sake of border peace, the ancients in China erected a bow in the southeast of Sirius. Su Shi wrote: I will make my strength as full as a full moon, and I will head northwest and shoot at the west Xia Jun team. ? The function of this bow and arrow is to deter by force.

Because Sirius is the brightest star in the whole day, the ancients noticed this planet very early. The ancient Greeks believed that Sirius represented the withering of plants caused by hot weather, the weakness of men and the irritability of women. In the eyes of ancient Egyptians, the appearance of Sirius meant the flood of the Nile; The Romans believed that the appearance of Sirius would have a bad influence on dogs; Many American residents also associate Sirius with dogs. Of course, they also associate Sirius with wolves or bows and arrows.

Sirius is very bright, its brightness is 25.4 times that of the sun, but due to the distance, it is still not as bright as the moon or Venus, and they only reflect sunlight. But if Sirius means anything to human beings, I don't think it has anything to do with it except that it is the brightest star in the night sky, but in general, there are some long histories of observing Sirius all over the world.

Sirius is located? The constellation Sirius also has a companion star. Sirius is 8.6 light years away from the earth, and it is already a star close to the earth. In addition, Sirius is currently in the main sequence star stage, emitting blue light, which is easy to see on earth. Sirius is divided into star A and star B. Usually, Sirius refers to star A, which has twice the mass of the sun and 1.7 times the diameter of the sun. But star b is very interesting. It is a white dwarf, which means it is a death star.

Sirius A and Sirius B are circling each other for too long, even 50 years. However, it is also interesting that the average distance between these two stars is only 20AU (astronomical unit, equal to the distance from the sun to the earth). Generally speaking, two stars so close together should not exist stably for long. There is a saying that Sirius B will have a great future. The constellation is so close to the earth that if a supernova explosion really happens, I'm afraid the earth will be greatly affected.

Perhaps this is why people have been paying so much attention to Sirius, but to be honest, there are so many stars in the night sky, most of them are stars. Sirius is not the closest star to the earth, and its role in human history is far less than that of the moon, so it is of great significance to mankind, but it is actually of little significance.