After 4 billion years, the Milky Way and Andromeda will collide and merge. What will happen in the solar system?

The solar system is the home of the earth's revolution, and the Milky Way is the home of the solar system. The earth is one of the eight planets in the solar system and the only planet with intelligent life. For the future destiny of the earth and mankind, apart from the problems of the earth and mankind themselves, from the perspective of the universe, we should also consider the influence of the solar system on the earth and the influence of the Milky Way on the earth.

The fate of the solar system, especially the fate of the central star sun, directly determines the fate of the earth, and the possible changes in the Milky Way will also directly affect the fate of the solar system. The earth, the solar system and the Milky Way are a complete system, and any problems and changes in them may directly affect the fate of mankind.

Therefore, since humans left the earth, scientists have been actively studying and exploring the mysteries of the solar system and the Milky Way. We naturally know more about the solar system because we are in it. Now, we already know that the life span of the star sun is about 654.38+00 billion years. It has been 50 years now, and in more than 4 billion years, the life of the sun will come to an end. At that time, it will become a red giant and then evolve into a white dwarf.

In the process of turning into a red giant, the sun will continue to devour the earth. If nothing special happens, the fate of the earth will disappear in the future. If human beings are already an interstellar civilization, they can only emigrate to other galaxies to survive. It can be seen that the fate of the sun is very important to the earth.

So in the future, will the Milky Way also undergo great changes? As we all know, the center of the Milky Way is a supermassive black hole. Under normal circumstances, black holes have no end. It seems to last forever. The stability of supermassive black holes in the Milky Way directly determines the stability of the Milky Way, thus affecting the stability of the solar system.

Although we all hope that the Milky Way will remain unchanged and maintain the current stable situation, the development and evolution of the universe will not be as we wish. In the vast universe, there are countless galaxies, and galaxy fusion is also happening at the same time. Large galaxies like the Milky Way are not born with such a scale, but grow up by constantly colliding with nearby galaxies.

In the past/kloc-0.00 billion years or so, the Milky Way has been annexing smaller galaxies or stellar systems and gradually expanding its own ranks. Today, it is still annexing other galaxies. For example, the Sagittarius galaxy is the satellite galaxies of the Milky Way. Every time around the Milky Way, some stars will be swallowed up by the Milky Way.

In the universe, the law of the jungle, big fish eat small fish, small fish eat shrimp. Large galaxies will continue to devour asteroids and thus expand themselves. For a large galaxy like the Milky Way, if some surrounding star systems are swallowed, it will not affect the galaxy itself, and it is a very gentle fusion process.

But if large galaxies of the same level collide and merge, will they be stable and safe? Scientists can't give a clear answer to this question. Moreover, through observation, scientists found that the Milky Way and the Andromeda galaxy are rapidly approaching each other in the constant blood winding movement. According to their speed and distance, in about 4 billion years, the two galaxies will collide with each other, and then the two galaxies will merge into a larger galaxy.

So will the merger of these two large galaxies affect the fate of the solar system? Some scientists believe that the universe is a very vast space, the distance between celestial bodies is very far, and the distance between star systems is basically more than a few light years. On such a broad scale, even if the Milky Way and Andromeda meet, they will only merge very gently and will not have any impact on the solar system.

So is this really the case? In fact, for the fusion of Andromeda and the Milky Way, we are not worried about the collision between celestial bodies. As scientists have said, the universe is too open, and the fusion of two galaxies and the mutual penetration of more celestial bodies will increase the density of celestial bodies at that time, but collision events rarely occur.

What we are really worried about is the impact of the collision and fusion of two supermassive black holes. We all know that most of the mass of the Milky Way and Andromeda galaxies is concentrated in the supermassive black hole in the center. The collision of two galaxies is actually the collision of two supermassive black holes.

Will black hole collision be soft? We can't think about it. At that time, there was only one black hole and two black holes in the center, and the gravitational swallowing effect would be doubled. At that time, double gravity will affect distant stars and other celestial bodies. At that time, more distant stars will gather in the center of the galaxy and be swallowed up by two colliding black holes.

As we all know, the center of the Milky Way is disc-shaped, with a thick middle and a thin periphery. The average thickness of silver surface is about 2000 light years, and the center thickness is about1.2000 light years. If the silver core is added to the supermassive black hole in the center of Andromeda galaxy, the influence of this silver disk may be extended to 24,000 light years. The solar system is about 26,000 light years away from the center of the Milky Way.

That is to say, when the gravity generated by two supermassive black holes is close to the solar system, in this case, it is difficult to ensure that the sun will not be constantly pulled by the strong black hole gravity and then fall into the center. If the solar system is pulled closer and closer by the gravity of the central black hole, the stability of the solar system will disappear.

At that time, the solar system may fall into chaos because the sun is already in danger. After the solar system is chaotic, the earth will also fall into crisis. And this powerful black hole gravity, we have no way to stop it. The end result may be that the entire solar system is swallowed up by the merging black holes.

Of course, the above is just our guess. What will happen when the Milky Way and Andromeda collide and merge? We need more observation data and research.

Fortunately, the time left for mankind is still extremely long. In the future, when human beings become interstellar civilization, they can enter interstellar navigation. At that time, we may be able to go out of the Milky Way and observe and study the collision and fusion process of other large galaxies, so as to obtain more detailed data. If the collision and fusion of the two galaxies will indeed bring great turmoil to the Milky Way, then mankind will have to leave the Milky Way for refuge temporarily. We will come back when the two galaxies are completely integrated and stabilized.

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