After the big bang, the universe has been expanding outwards for 13.8 billion years. No one knows how big the universe is now. In the vast universe, there are countless galaxies like the Milky way, with at least hundreds of billions of them.
The number of galaxies in the universe seems very large, but they are distributed in the vast universe, most of them are very far away, and because of the mysterious dark energy in the universe, galaxies are constantly away from each other. However, some close galaxies will be close to each other under the action of gravity, and eventually a big collision will occur, and the two galaxies will merge together.
Galaxy collision and fusion is also a great spectacle in the universe. The Hubble Space Telescope has captured the galaxy collision and fusion spectacle 228 million light years away from the earth. About 228 million light-years away from the earth, there is a galaxy called NGC 6052, which belongs to the constellation Perseus. The diameter of this galaxy is about 110000 light-years, similar to the diameter of the Milky way.
At the beginning, NGC 6052 was considered to be an irregular galaxy because the observation equipment was not very advanced. It was one of the three types of galaxies in the universe. The other two types were spiral galaxies and elliptical galaxies. Our galaxy belongs to the spiral galaxy. With the continuous progress of science and technology, the observation equipment is constantly upgrading. Later, the third generation wide area camera of Hubble Space Telescope took higher resolution NGC 6052 photos.
At this time, scientists can see the true face of NGC 6052. It turns out that NGC 6052 is not an irregular galaxy, but is composed of two colliding spiral galaxies. At this time, the two galaxies are colliding and merging, and they have begun to transform into a new and larger galaxy. Of course, we are seeing the situation of NGC 6052 Galaxy 228 million years ago, and now 228 million years later, it is still unknown whether they have merged.
By observing the collision and fusion of NGC 6052 galaxy, we can get more data about the collision and fusion of galaxies, so as to prepare for the future collision between the galaxy and Andromeda galaxy. You’re right. The future of the Milky way will be the same as the galaxy 228 million light-years away. The Milky way has a neighbor galaxy, Andromeda.
Since the distance between the two galaxies is only 2.5 million light-years, they will not be far away from each other under the action of dark energy, but will be pulled close to each other under the action of strong gravitational force. About 3.8 billion years later, the two galaxies will collide and merge into one galaxy. Although intergalactic collision and fusion will not bring destruction like celestial collision, we have no idea what will happen in the collision and fusion of two large galaxies.
The distance between the stars in the galaxy is very far, basically within a few light years. Such an empty space makes the probability of collision between stars very small. Therefore, after the collision between the galaxy and Andromeda galaxy in the future, it is unlikely to have a huge impact, and there may be a very mild fusion between them.
Of course, the mild collision and fusion between galaxies is only a guess. I believe no one can make an accurate prediction of the final result. The collision and fusion of Andromeda galaxy and galaxy is not only the fusion of two galaxies, but also the fusion of two massive black holes. We all know that there is a supermassive black hole in the center of galaxies like the Milky way and Andromeda, which is the center of Galaxy gravity.
Black holes are the overlord of the universe, with super strong gravity. Supermassive black holes have even stronger gravity, which can affect the whole galaxy. We can’t accurately predict what will happen when two supermassive black holes collide and fuse, and whether they will fuse very gently is also an unknown number. If the collision of two supermassive black holes causes huge fluctuations, the impact on the whole galaxy may be very large.
Although the solar system is located on the edge of the Milky way, the impact of Galaxy collision and fusion in 3.8 billion years may not be significant, but whether the collision of two black holes will lead to variables is also unknown. Therefore, scientists need to observe more Galaxy fusions and supermassive black hole collisions in the universe to collect data to determine a series of chain reactions that may be triggered by the fusion of two galaxies.
Of course, 3.8 billion years is still too far away for human beings, and whether human beings can continue to that time is also unknown. If human beings can continue to develop, the human civilization in 3.8 billion years may have been strong enough to reach the earth we can’t imagine. It is possible that at that time, human civilization would have been the overlord of the galaxy, and even gone out of the galaxy and developed to other galaxies.
Moreover, 3.8 billion years later, the sun will soon come to the end, and it has already become a red giant. The earth’s orbit can not survive at all. If we want to save the earth, we can only push the earth away from the solar system and go to other galaxies. At that time, human civilization was fully capable of dealing with Galaxy collisions, so we didn’t have to worry at all. Of course, if human civilization does not last to 3.8 billion, then there will be a new intelligent civilization.
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