Sirius, only 8.6 light years away from the Earth, is there a livable planet?

No matter how far away from the solar system, livable planets are extremely attractive conditions! You only see the brightest star in Sirius's night sky, which is 8.6 light years away from the Earth. If there is a livable planet, it will undoubtedly become one of the goals pursued by mankind, then does it exist?

First of all, Sirius and its friends

Why do you want to involve your little friends? In fact, even the chief of a tribe in Africa knew that Sirius had an invisible companion. Of course, introduce the Lord first, and don't violate the rules!

Main parameters of Sirius A:

1, diameter: 1.7 times d ⊙; 2. Mass: 2.06 times m ⊙;

3. luminosity: 25.6 l ☉; 4. temperature: 9940K K

Key parameters of Sirius B:

1, mass: 1.02M⊙ 2, luminosity: 0.56 L☉.

3. Distance to Sirius A: 20 astronomical units

Sirius a doesn't need to be discovered. 1844, German astronomer Bessel speculated that Sirius was a binary star according to its wavy trajectory! This companion star was discovered by American astronomer Clark in 1862 with a homemade refractor!

The arrow refers to Sirius's companion star, which is a white dwarf. Remember, these parameters are very useful in analyzing the livable environment of Sirius system!

Second, will Sirius have a livable planet?

There are legends of Sirius all over the world, especially the Dogon people on the African continent even know that Sirius has an invisible companion, which makes many people who eat melons wonder. Are the Dogon people sirian? Let's make a brief analysis. Is it possible?

1. The concept of a livable planet

Humans always measure the universe by the environment of the earth, because with our observation ability, we have searched the "whole universe" and only found life in the environment like the earth. So why not apply the condition of choosing Mars or Venus, and there is no such condition? For the livable zone, the explanation in the above picture is intuitive, and the range of liquid water can be maintained around the star! Of course, there must be planets first, otherwise it doesn't make any sense even if the conditions are good. It can't mean wandering earth!

2. Does Sirius have a livable planet?

This is a problem, because according to the observation of astronomers, no planets have been found around Sirius. Sirius system is a binary star system, so it is difficult to have stable planets in theory. The distance between them is about the distance from the sun to Neptune. Obviously, this distance is too close for two solar-level stars!

If there is a planet, it is actually a restricted three-body Although it is not as chaotic as the imagined three-body movement, it is also chaotic. So, the problem is that even if Sirius has a planet, it may be at two extremes, too close to A or close to B, otherwise it will be contested!

The above picture shows the orbit of the legendary livable planet Sirius. Of course, considering the most basic state of the star system, it is impossible to exist. In addition, B radiation is relatively strong as a white dwarf. If it is too close to B, it is a microwave oven every day!

Third, does the legendary Sirius exist?

According to the above description, this is impossible, but in all kinds of so-called decrypted files, there seems to be sirian's suggestion and so on. Maybe this is for the best, but it is more likely to be smuggled goods! Don't accept Sirius and continue to collect smuggled goods in full. If you sell it, you can count the money for others. Absolutely a good man!

Dogon people in Africa

So where did the rich astronomical knowledge of the Dogon people in Africa come from? They not only know that Sirius has a companion star, but also know that Saturn and Jupiter have multiple moons. In everyone's impression, West African tribes are always backward and ignorant. Are the Dogon really aliens? However, there seems to be a blank in their rich astronomical knowledge, and they know nothing about Uranus except Saturn, which means that the Dogon people's knowledge may have come from Europe in19th century or 20th century, because Sirius's ring was discovered by the research team of Cornell University in 1977!