The earth is the home of human survival, and the solar system is the home of the earth’s survival. When we walk out of the earth, the first thing we see is the entire solar system, and the center of the solar system is the solar system with stars. While the eight planets rotate, they also revolve around the sun.
At first, we thought that the sun was motionless and the whole solar system was motionless. But later, when we observed the Milky way beyond the solar system, this cognition changed. At that time, we understood that the solar system was only one of the 100 billion star systems with the Milky Way coefficient. The solar system itself was also moving, and it had to revolve around the center of the Milky way.
I believe many people want to understand one thing: where is the solar system in the Milky way? If you are interested in astronomy, you can give an answer to this question. The position of the solar system in the Milky way is closer to the edge, on a Orion spiral arm, which is one of the four spiral arms of the Milky way.
As we all know, both the solar system and the Milky way are in high-speed motion. The speed of the solar system around the silver center is 220 kilometers per second, and the speed of the Milky way is higher than that. Because of the different speed of the two systems, the position of the solar system in the Silver River system is not fixed, but constantly changing.
The sun will not always move in one direction. It adds a “current wheel” to the average motion of the galaxy to approximate its motion. Galaxies oscillate in and out of the plane (up and down) for about 70 million years, which means we cross the middle plane of the galaxy every 35 million years. On the whole, the solar system is about 26000 years away from the Milky way, and it takes about 220 million years to circle the galactic center.
This is a very long time. It is precisely because the position of the solar system has been changing in the process of its revolution around the silver core, so some people think that the major natural disasters in the history of the earth may have a close relationship with the revolution of the solar system. You know, different locations in the galaxy have different environments.
If the solar system revolves around a star that is about to explode, the impact will be great. We should know that the explosion power of supernovae is very large, which will directly threaten the earth’s ecology and life safety. Scientists speculate that one of the five mass extinctions in the earth’s life history may have been caused by a supernova explosion.
In addition to the solar system revolution near the supernova explosion, there are other environments that will also have a huge impact on the earth. For example, the background temperature of each region of the galaxy is also different. If it moves to a colder region, it will also bring a significant cooling to the earth, and let the earth enter a long ice age.
You know, the earth has experienced several ice ages in its history, each lasting for millions or tens of millions of years. Scientists have always believed that the earth’s ice age may be related to the degree of sunspot activity. If the sunspot activity continues to weaken, then the earth’s temperature will continue to decline, and there will be an ice age.
However, as we know at present, the decrease of sunspot activity will bring a little ice age to the earth, which will last for decades or so. However, whether the great ice age, which lasted for millions of years and tens of thousands of years, was also caused by the weakening of sunspot activity, has not yet been determined. You know, there is no doubt that there is a periodicity in sunspot activity, but can this periodicity last for millions of years?
Even if the sunspot activity decreases periodically, it may be difficult to reach more than millions at this time. Therefore, the great ice ages in the history of the earth may not have much to do with the sun, and the most likely is the periodic movement of the solar system, which happened to turn to a very cold region of the galaxy.
The revolution period of the solar system is 220 million years, and the history of the earth is 4.6 billion years. Judging from the time interval and times of the great ice age of the earth, this possibility is also very large. If the occurrence of the great ice age is really related to the revolution cycle of the solar system, it means that the earth will experience the great ice age again and again in the future.
If one day in the future, the solar system will rotate to a very cold star position again, and the earth will usher in the great ice age again, then the fate of mankind will be very bad. It is very difficult for human beings to survive on the surface of the earth for such a long time.
At that time, the earth will become a frozen planet, and humans may have to move to the interior of the earth to live better. And we can only rely on powerful science and technology. If human beings mastered controllable nuclear fusion technology at that time, it would be relatively simple. We can completely rely on nuclear fusion technology to go through the long ice age.
You know, controllable nuclear fusion is a very powerful energy, which is equivalent to a small sun. With nuclear fusion energy, human beings can build underground cities without worrying about the impact of too low temperature on us. Even then, humans might have become an interstellar civilization, and we could migrate to other galaxies.
In fact, in the future, the earth and human beings will face another possible disaster, that is, the collision and fusion of the Milky Way galaxy and Andromeda galaxy. We need to know that the orbit of the Milky way is much more complex than that of the solar system. While the Milky Way rotates, it is also constantly moving towards the neighboring Andromeda galaxy. About 3.8 billion years later, the two galaxies may merge and then collide.
Although scientists believe that the fusion of the two large galaxies is a smooth process, it is still unknown how the real situation will develop. We should know that the center of the Milky way and Andromeda galaxy are supermassive black holes, and the collision and fusion of the two galaxies are also the collision and fusion of the two supermassive black holes.
The collision and fusion between them will not be a very gentle process, so in 3.8 billion years, the collision and fusion between Andromeda galaxy and Milky Way galaxy may not be as beautiful as we think. Of course, this is far away from us. 3.8 billion years is enough to make human civilization a powerful cosmic civilization. At that time, human beings may have already stepped out of the galaxy. Even if the collision and fusion of galaxies will threaten the earth, we can leave the galaxy ahead of time.
Guys, what do you think of this? Welcome to leave a message below to discuss and express your opinions.