Lead
In the 16th century, Copernicus's heliocentric theory gradually replaced geocentric theory and became the mainstream of astronomy in European countries, but in the past hundred years, people have not completely understood this problem in the controversy between heliocentrism and geocentrism, but gradually forgot about it after that, but with the continuous acceleration of human exploration, this problem that had been ignored has resurfaced in people's sight.
At this time, people found that in the dispute between geocentrism and heliocentrism, it seems that they have not done their best, because in fact, the sun is not the center of the Milky Way, but is located on the edge of the galaxy, orbiting the black hole of the galactic center, and the sun, planets, stars, etc. in the solar system are revolving, and the speed of the sun is faster than that of the planets, so our sun and the earth are running with the solar system.
So what's going on with all this?
And how does the solar system orbit the black hole at the heart of the galaxy?
And why doesn't the solar system break away from the gravitational pull of the Milky Way and fly alone?
1. The operation of the solar system.
The galactic black hole is the controller of the galactic center, but it is not the only one, and the solar system is approaching this black hole.
So what about the exact location of the solar system?
The position of the Solar System is in the Milky Way, which is about 100,000 light-years in diameter, and the Solar System is located in the center of the Milky Way, which is a peripheral spiral arm of the Milky Way, and the distance between the Solar System and the center of the Milky Way is about 2.5 to 28,000 light-years.
Of course, the distance of 2.5 to 28,000 light years is not fixed, but is constantly changing with the rotation of the solar system, the solar system is orbiting the black hole of the silver center, and the black hole of the silver center is called the center of the Milky Way, although its gravitational attraction is very huge, but its attraction range is limited, and the solar system is located in this attraction range, so the solar system is firmly attracted to the spiral arm of the Milky Way by the gravitational pull of the black hole.
The galactic black hole revolves around the nebula at the galactic center where it is located, because the gravitational pull of the black hole continuously attracts various substances in the galactic center, and when matter and photons are bound by the gravitational attraction of the black hole, a range called the "event horizon" will be formed around the black hole, and the rotation range where the galactic black hole is located is within this range.
The planets, stars, and so on in the solar system are orbiting the black hole at the center of the Milky Way, and their orbit is in a clockwise direction, while there are tens of billions of galaxies in the Milky Way.
Although the galactic black hole is the controller of the center of the Milky Way, it is not the only black hole in the Milky Way, there are many smaller black holes in the center of the Milky Way, the distance between these black holes is very far, and all the black holes rotate in the same direction, this is because these black holes existed when the Milky Way was formed, and the direction of their motion is the direction that attracts various substances in the Milky Way.
The various stars, planets, etc. in the Milky Way are attracted by these black holes, so their rotation direction is also according to the rotation direction of the black hole.
2. The Year of the Milky Way.
Although the attraction of the black hole in the heart of the galaxy is huge, the solar system cannot be swallowed by the black hole, so how does the solar system revolve around this huge black hole?
This is because the speed of the solar system is very fast, when the solar system moves to one side of the black hole, although the gravitational force between them is about the same, but the solar system is able to surpass the gravitational force of the black hole because of the fast rotation, so that the solar system can revolve around the black hole to the other side, and there will be the gravitational pull of the black hole on the other side.
Therefore, the solar system orbits back and forth on both sides of the galactic black hole, and the orbit time of the solar system is very long, the solar system has existed for 4.6 billion years, and this 4.6 billion years can also be called the galactic year, and we humans appeared in the fifth galactic year of the galactic year, so how is the galactic year calculated?
The galactic year refers to the time it takes for the solar system to circle the galactic black hole, and the mass of the galactic black hole is very large, its mass is about 40 million times that of the sun, and the size of the galactic black hole is also very huge, with a diameter of 200,000 times that of the solar system, under such a large mass and size, the solar system orbits the black hole at a very, very fast speed, and its speed around the black hole is about 790,000 kilometers per hour.
Then the solar system needs to spend 225 million years to orbit the black hole, and this time is called the galactic year, and the solar system also revolves around the galactic black hole for 20 times, and in the solar system, the earth is the planet where human beings live, and the earth is the closest to the sun in the solar system, so how long does it take for the earth to orbit the sun?
The Earth's orbit around the Sun is 365 days, and the Sun is carrying the planets of the solar system around the galactic black hole, so how long does it take for the Earth to orbit the galactic black hole?
epilogue
Although the solar system cannot be separated from the Milky Way, with the continuous development of science and technology, human beings may one day be able to realize the dream of crossing the Milky Way and explore the wider universe.
The distribution and influence of black holes in the Milky Way are of great significance to the stability and development of the solar system, and related research may provide more clues for future cosmic exploration.
Although the existence of human beings is only a small episode of the evolution of the Milky Way, the Milky Way is a part of the universe, no matter how insignificant the existence of human beings is, but the exploration of the Milky Way by human beings is undoubtedly a dazzling stroke in the evolution of the Milky Way.