Does the solar companion exist, and if so, how far away will it be from the Sun?

A solar companion is a hypothetical red or brown dwarf star located 50,000 to 100,000 AU from the Sun and named after Nemesis. The theory that the Sun may have a companion star was first developed by Richard AMuller proposed that because he found that the time of mass extinction on Earth is cyclical, about once in 26 million years, to try to explain the cyclical nature of mass extinction.

The companion is estimated to have an orbital period of 26 million years, and as it passes through the Oort cloud belt, it disturbs the comet's orbit, sending millions of comets into the inner solar system, thus increasing the chance of a collision with Earth. At present, there is no evidence of the existence of companion stars on the Sun, which has also debated the cause of the periodic mass extinction of the Earth. Matese and Whitman pointed out that the cause of periodic mass extinctions is not necessarily the presence of companion stars on the Sun, and suggested that it may be because the solar system oscillates up and down in the plane of the Milky Way and perturbates the Oort cloud, which has a similar effect to the hypothesis of the existence of companion stars, but its up-down oscillation period remains to be observed.

In astronomy, two stars orbiting each other around a common center of gravity are generally called physical binary stars; Two stars that appear to be close together, but are actually very far apart, independent of each other (do not orbit each other), are called optical binaries. Optical binaries have little research significance. Physical binary stars are the only stars whose mass can be directly determined, and they are a very common phenomenon in the stellar world.

It is generally believed that binary and clustered stars (a star system consisting of 3 more than 10 stars) account for more than half of the total number of stars. As a more typical star, does the Sun also have its own companion - a companion star? Or is it also a special kind of physical binary star?

In recent years, this has been a matter of great concern to scientists, and this issue has been raised by the extinction of species on Earth. About half of the stars in the universe are binary stars, and we call the brighter one the main one and the fainter one the companion star. Clusters of several stars also make up a significant proportion of the universe, while single stars are only a few in the universe.

Scientists have also found that the sun accelerates in a certain direction, which cannot be explained by the gravitational pull of the Milky Way on the sun as a whole. Some scholars have suggested that the Sun's accelerated motion is the result of the attraction of a companion star, simply because it is too faint (neutron stars) or not visible at all (black holes). The hypothesis also suggests that the companion star will be as massive as the Sun, and that it will be a thousand times farther from the Sun than the Earth's orbit, that is, 150 billion kilometers, with a rotation period of up to 10,000 years.

As far as the current observation has known, the vast majority of star systems are binary star systems, or multi-star systems, and there are fewer single stars, so the possibility of the sun having a companion star is still larger, at least in terms of probability, but with the current level of human observation, this companion star has not been observed, so we have to speculate that this companion star is a brown dwarf or white dwarf, and according to the periodicity of comet periodic star regression and the mass extinction of the earth's species, the return window of this companion star is about 26 million or 30 million years. The above is all based on some clues to make assumptions, or is it based on future observations

The Sun has companion stars.

Some scientists believe that the Sun has companion stars. They called the companion star of the Sun Nemesis. Nemesis is the goddess of vengeance in Greek mythology.

The name of the sun's companion star is not a good stubble at first glance. The American astronomer Richard Mill believed that the sun had companion stars.

It was found that large-scale extinction events on Earth occur relatively regularly, occurring on average every 26 million years. This may have something to do with the existence of a mysterious companion star on the Sun. Richard Mill believes that the Sun's companion star and the Sun orbit each other for about 26 million years.

Sun Basic Information:

The Sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

The Sun is a star located at the center of the solar system, and it is almost an ideal sphere intertwined with hot plasma and magnetic fields. The diameter of the Sun is about 1,392,000 kilometers, which is 109 times the diameter of the Earth; It is about 1.3 million times the size of the Earth.

In terms of chemical composition, about three-quarters of the mass of the Sun is now hydrogen, and almost all of the rest is helium, including oxygen, carbon, neon, iron, and other heavy elements with less than 2% of the mass, which uses nuclear fusion to release light and heat into space.

The Sun is currently passing through the local interstellar cloud in the local bubble of the Orion Arm at the inner edge of the Milky Way. At a distance of 17 light-years from Earth, there are 50 of the closest star systems (the closest star to the Sun is a red dwarf called Proxima Centauri, about light-years).

Is it true that the Sun once had a "companion star"? Scientist: It's going to be back in the solar system eventually.

No. Because the Sun is a lonely planet and very special, the Sun has no companion planet.

Let's look at which planet, hahahaha, and ask the other planets how to maintain the original comfortable environment.

Yes There are eight planets on the Sun, and there are some other unknown asteroids that orbit the Sun.

Scientific studies have shown that the Sun has a companion star, but it is only speculated based on some basic phenomena and laws, after all, human technology is very limited.

Nope. A companion star is two planets that accompany each other like partners. But according to human observation, the sun does not have such a partner.

Other planets have companion suns, and there are no companion stars, which may be that scientists have not yet discovered, but why is it every 26 million years?

80 stars in the universe have companion stars, and there is no evidence of whether the sun exists. There is a mass extinction on Earth every 26 million years. Therefore, many scientists believe that the orbit of the Sun's companion star is 26 million years.

Of course, these are just the assumptions of scientists, and there is still a lot to be done.

So far, we have not been able to determine whether the Sun has a companion star. Because, there is no evidence that there are companion stars in the solar system, but the absence of evidence does not mean that there are none. For example, if you want to know if you have a brother, you have never heard your parents and people around you say that you have, but maybe one day will pop up out of nowhere, so you are not sure if you have a brother.

That's about it.

We may be destroyed, but this has nothing to do with the fact that the solar system has companion stars, and even if there are, companion stars are too far away from us, not to mention, if there are companion stars, they must be rotating according to the rules of the orbit for thousands of years. But wars, humanitarian disasters, biochemical crises, nuclear disasters, and meteorological disasters can all destroy humanity. Rather than worrying about extraterrestrial disasters that we don't know exist, we should be concerned about the more realistic contradictions within ourselves as human beings.

This is a question for future generations to consider, and now we can just eat and have fun and enjoy life.