What's the significance of Sirius?

Sirius is the brightest star, and its significance is because it is similar to the earth.

Sirius is the brightest star in a day. Sirius is a visual binary star consisting of two stars, A and B. Star A is the brightest star in the sky and belongs to the blue dwarf of the main star sequence. Star B is usually called Sirius companion. It is a white dwarf, slightly larger than the sun and smaller in radius than the earth. Its substance is mainly in a degenerate state, with an average density of about 3.8? 106/cm3。 The greatest significance of this star to us is that it is closest to the earth, and we have found a planet similar to the earth. The Earth planet released by the European Southern Observatory in 20 16 was named Near-Earth B. Its mass is 1.3 times that of the Earth, and its distance is only 7 million kilometers, less than one-eighth of the distance between Mercury and the sun. Because the temperature is lower than that of proxima centauri, this is a livable area, and the existence of liquid water is not excluded. Whether this close-range planet will be destroyed by the unstable surface flare of tidal locking or red dwarf under the influence of neighboring star tidal force is still unknown.

In ancient times, Sirius was recorded as red, which provided great clues for our country. X-rays of Sirius were discovered in China in 1975. Some people think that it may be caused by the thermal radiation of the deep pure atmosphere of almost pure hydrogen in star B, while others think that it may be caused by the high temperature corona of the star. According to the data of 1980, the second high-energy observation satellite measured the X-rays of Star A and Star B in frequency band 0. 15 to 3.0 kV, respectively. It is known that X-ray of Star X is stronger than that of Star A: it is a dog of Orion, and it is a separate constellation, namely Canidae.

Sirius in this constellation is the brightest star in the sky. Its light is 20 times that of the sun, and it is only 8.6 light years away from the earth. The first god enshrined in some Taoist temples is called Pangu. Pangu is also enshrined in the ancestral halls of many southerners. They think Pangu is their ancestor. I believe this is the key to solve the mystery of Pangu, the source of Taoism and Chinese civilization. It is a well-known fact that Pangu is half dog and half man.