Why don t black holes in the Milky Way suck us in?

The solar system moves fast enough to compete with the gravitational pull at the center of the Milky Way, because the black hole is 25,000 light-years away and has a very weak gravitational pull on us.

The velocity of the solar system, that is, the centrifugal force of the solar system, is enough to resist the gravitational pull of this black hole. It is precisely because of the existence of centrifugal force that the moon will not fall to the earth, the earth will not fall to the sun, and the solar system will not fall into a black hole. Everything happens to be in balance.

The Silver Heart is indeed a supermassive black hole. But the existence of black holes does not mean that we have to despair, why? - Because objects that will be attracted to it and compressed or shattered are confined to the "event horizon", the event horizon is the real "gate to hell", where time and space can even lead to the end.

Not only that, but supermassive black holes stabilize the entire galaxy with their own strong gravitational pull, just as the Sun stabilizes its solar system, and all the stars of the galaxy revolve around their centers like all the planetary inhabitants of the solar system.

Everything has a certain law, and if you don't suck it in, you comply with the law of gravitation. Even if you go to the edge of a black hole, you may not be sucked in, as long as you are fast enough to generate enough centrifugal force to deal with the suction.

Because it's so far away from us, the gravitational pull is already small

Because you're too far away.

Why don't you ask for Mao that we weren't sucked into the center of the earth?? The energy of the black hole is so big, but it's not so big that far away

Black holes are theoretically capable of swallowing the Milky Way, and the definition of a black hole is a celestial body that can swallow any matter. The closest black hole to the Milky Way is Centauri A, and it will take at least 5 billion years to swallow the Milky Way, at least until the Sun dies.

In theoretical knowledge, black holes are indeed capable of swallowing the Milky Way. A black hole is a special kind of celestial body that exists in the universe, with a large density but a small size, with a strong gravitational pull, so strong that even light cannot escape, so substantial matter like the Milky Way will indeed be swallowed by black holes.

Although it is theoretically possible for a black hole to swallow the Milky Way, it requires many other external conditions, such as distance, size, velocity, and so on. If a large enough black hole is tens of millions of light-years away from the Milky Way, the time to engulf will also become very slow, and the size of the black hole will affect the speed of engulfment.

The closest black hole to the Milky Way is called Centauri A, and this black hole is located in the center of the Milky Way and is part of the constellation A. However, theoretically speaking, it will take at least 5 billion years for Centauri A to swallow the Milky Way, at least after the end of the Sun, the Milky Way will still exist.

As a black hole swallows surrounding gases and other matter, it grows and engulfs as much as it engulfs it. However, the rate at which the black hole at the center of the galaxy accretes gaseous matter is too low, and its growth is extremely slow, almost negligible in a short period of time, so its engulfing range will not change much, and it will not pose a threat to the Earth.

However, there are also some black holes that accrete matter at a high rate, such as quasars.

These black holes grow fast. But they are too far away from Earth to make a difference.

Black holes have only been frequently proposed in recent decades, they are terrifying beings that can absorb everything in the world, including omnipotent light, so why doesn't the black hole at the center of the Milky Way suck the Earth in? Black holes are not omnipotent, because we are far enough away from them, and because of the gravitational pull of the solar system, black holes cannot suck the Earth in.

The existence of black holes in the universe is like a "guardian of the family and the country", no matter what is close, he has a way to win, according to the current stage of scientific research, it can swallow everything known, and the black hole is real, there is a black hole in the center of the Milky Way, they are like an abyss, there is no light and there is no bottom, but they can't suck the earth in the solar system into it, because the solar system has a gravitational effect on the earth and the distance is too far apart, just like no matter how strong the gun is, it has a shooting range, So we don't have to worry about the Earth being sucked into a black hole.

Black holes are formed before the depletion of huge stars, many people are afraid, the sun is a huge star, after it burns completely, another black hole will be formed, but we don't have to worry, according to known research, the stars that form black holes are much larger than the sun, so even if the sun burns out, it is impossible to form a black hole, and the sun is now in its prime, just like we are thirty or forty years old, it will take at least billions of years to burn out, No one knows where human civilization will go at that time, and if there were still human civilization at that time, it might have dominated the universe.

Around the black hole of the Milky Way, there are indeed countless cosmic meteorites and planets that are sucked in, which is unavoidable, even if the Milky Way disappears, it is not important to us humans, the universe is beyond our imagination, there are not many galaxies like the Milky Way and the solar system in the universe, so as long as the technology reaches the resources everywhere, and there is no need to worry about black holes.

Because the black hole at the center of the Milky Way is so far away from the Earth that it has little impact, it will not suck the Earth in.

In principle, the question is similar to why the sun doesn't suck the earth in.

The answer is already given in high school physics books, because the earth has a tangential velocity around the sun, and the gravitational pull exerted by the sun on the earth acts as the centripetal force that maintains the earth's orbit around the sun. So the Earth will only revolve around the Sun in an elliptical orbit that is nearly circular, and will not fall directly into the Sun.

To put it in a way that is not very rigorous, but in line with the perception of life. Because the earth revolves around the sun, there is a centrifugal effect, and the centrifugal effect counteracts the gravitational pull and keeps the earth's orbit alive.

The black hole at the center of the Milky Way is moving at a high speed of 220 km/s at a distance of 10,000 light-years from the center of the Milky Way, despite having 4 million times the mass of the Sun. It is precisely because of the movement of the sun around the center of the Milky Way that it can maintain a basically stable orbit and not be swallowed up by the black hole at the center of the Milky Way.

The distance is long. Although the gravitational pull of a black hole is strong, the Earth is located on the periphery of the Milky Way, and the gravitational pull of the black hole cannot affect the Earth.

Probably not, every galaxy nucleus has a supermassive black hole, and the same is true for the Milky Way. However, black holes in galactic nuclei have always been stable. Its main function is to maintain a certain shape and rotation of galaxies.

And our Earth is still 25,800 light-years away from the black hole at the center of the Milky Way, which will not have much impact.

Galaxy.

The findings were published today in the British journal Nature. "This is the first time astronomers have seen a region so close to the center of a black hole, and they have finally found the most convincing evidence to date that supports the idea that there is a supermassive black hole at the center of the Milky Way," the journal commented.

Sagittarius A*, a mysterious radio emission source located at the center of the Milky Way galaxy 260,000 light-years from Earth, is considered the best target for studying black hole physics. Beginning in 1997, Shen Zhiqiang and his collaborators, including Lu Guoyong, director of the National Radio Astronomy Observatory of the United States, Liang Maochang of the California Institute of Technology, and He Zengpu and Zhao Junhui of the Smithsonian Center for Astrophysics in Harvard, set their sights on this celestial object, and finally determined that the diameter of Sagittarius A* was only 150 million kilometers, which is equivalent to the orbital radius of the Earth's revolution. All are at least a trillion times larger, strongly supporting the physical explanation for the existence of supermassive black holes in Sagittarius A*.

The closest "radio**" to the black hole that the team has successfully photographed to date is the strongest support for determining the diameter of the Sagittarius A region. Beginning in 1997, the international research team used an array of 10 radio telescopes in the Northern Hemisphere to make a large number of observations, and used new methods to continuously improve the accuracy of observations, and finally obtained the world's first high-resolution image with a wavelength of 3 5 millimeters. This is the highest spatial resolution currently available in astronomy, and the first time humans have seen a region so close to the center of a black hole.

Related Links: According to the black hole theory, black holes are formed by the collapse of massive stars. At this time, the matter that originally made up the star is concentrated in a single "point", and its density tends to be infinite, so that no light can escape its gravitational pull. Therefore, from the outside, this celestial body is completely black.

Because of this characteristic of black holes, astronomers are very difficult to find black holes. Astronomers can only determine the existence of black holes based on their ability to violently "devour" objects near them.

There are usually three types of black holes, one is a "super black hole" located in a galaxy**, and the other is a stellar black hole with a mass of about dozens of suns. There is also an "intermediate-mass black hole" in between.

Black holes don't swallow the Milky Way.

Because there is a giant black hole in our Milky Way, a supermassive black hole with a mass equivalent to 4.3 million suns, Sagittarius A*, which is located in the heart of the galaxy, but our galaxy has been unscathed. According to the Schwarzschild radius formula, the event horizon radius of Sagittarius A* reaches 12.7 million kilometers, which is equivalent to 33 times the distance between the Earth and the Moon.

If the supermassive black hole were to replace the Sun, its event horizon would reach one-fifth of the radius of Mercury's orbit. Within a certain space around the horizon, Sagittarius A* can create a huge tidal action that can tear and engulf nearby celestial bodies. But if it is farther away, the celestial body will not disintegrate, but will be bound by the gravitational pull of Sagittarius A* and move around it.

If far enough away, the movement of celestial bodies will not be controlled by the gravitational pull of Sagittarius A*. The gravitational dominance of Sagittarius A* is so limited that it cannot affect the movement of stars throughout the galaxy. The stars in the Milky Way orbit around the galactic center, not because the gravitational pull of Sagittarius A* is strong, but because the Milky Way's common center of mass is located right in the galactic center of Sagittarius A*.

As a result, the gravitational pull of the galactic supermassive black hole does not absorb the entire galaxy. You know, there are some galaxies with black holes at the center that are much larger than Sagittarius A*, and their masses are even tens of billions of the Sun, but their parent galaxies are not absorbed by these giant black holes.

Introduction to Black Holes:

The black hole is not a real planet, but an almost empty celestial region, and the black hole is the highest density of matter in the universe, if the earth becomes a black hole, only the size of a soybean, it turns out that the matter in the black hole is not evenly distributed in this celestial region, but concentrated in the center of the celestial region.

These substances have an extremely strong gravitational pull, and any object can only swim around the periphery of this center, and once it accidentally crosses the boundary, it will be pulled towards the center by the strong gravitational force, and eventually turn into powder and fall to the center of the black hole. Therefore, the black hole is a veritable space demon king. The reason why there is such a strong gravitational attraction inside the black hole is related to its formation, a star with a mass of more than 20 times that of the Sun, after a supernova explosion, the mass of the remaining part is generally still more than 2 times the mass of the Sun.

The gravitational pull of this part of the matter itself is very strong, resulting in a sharp collapse, although there will also be some pressure to resist the collapse during the collapse process, but in the face of such a strong gravitational force, it is tantamount to a mantis arm blocking the car. As the collapse intensifies, molecules, atoms, and even nuclei are squeezed out, eventually forming an extremely dense center of gravity.

The above content refers to Encyclopedia - Black Holes.