The planets generally revolve around the parent star, and a few planets revolve around the galaxy or drift in the universe alone, but now scientists have discovered that there is a planet that can orbit directly around a supermassive black hole.
According to the nebula hypothesis model, both planets and stars originate from the same molecular cloud. The dust gas first collapses by gravity to form a star. The remaining material forms a Proplyd or Protoplanet Disc around the young star. The last planet, satellite It emerged from it and formed a small celestial system with stars.
Occasionally, some planets are thrown out of the original system by the influence of other celestial gravitational forces, or are ejected during the formation of the planetary system, so that the last wandering in the universe, no longer revolves around the stars or only revolves around the galaxy, called Interstellar planet or Rogue planet, nomad planet, free-floating planet, Orphan planet, astronomers estimate that the number of interstellar planets is 2 times higher than stars .
Previously, astronomers had suggested that planets might run around smaller black holes, but supermassive black holes are not in the scope of discussion because the latter is too mass. Therefore, the Keiichi Wada team at Kagoshima University in Japan applied the planetary formation model to the black hole to find out what would happen.
The study found that these gas molecules clouding around the dust disk around the star have the same behavior around the supermassive black hole. In addition, although supermassive black holes will distort the surrounding time and space in a strange way, the planets can orbit the supermassive black hole at a distant distance of 10 to 30 light-years. The impact of the huge gravity of the black hole is almost insignificant, so don't worry about being attracted by the black hole. crack.
The biggest difference from the general celestial system is that the mass of a planet that orbits a supermassive black hole maybe 10 times larger than the Earth, and there may be as many as 10,000 planets orbiting the same supermassive black hole.
Since the black hole is too far away from us, it is difficult to directly detect such planets, but perhaps we have the opportunity to use indirect evidence to prove, for example, to observe the original planet disk with infrared light. New papers can be previewed on the Arxiv website.
The black hole is perhaps the most mysterious object in the universe. Of course, unless we don't hide things in the depths, we can't know or don't know. A black hole is a huge mass and density that is compressed into a small radius point. The physical properties of these objects are so peculiar that they confuse the most complex physicists and astrophysicists. This is something that everyone should know about black holes.
The defining property of a black hole is its horizon. This is the boundary, overcoming nothing, even without light, can't return. If a separate area is always separated, then what we are talking about is the "event horizon." If it is only temporarily separated, then we are talking about the "visible horizon." However, this "temporary" may also mean that the separation time of the area will be longer than the current age of the universe. If the black hole range is temporary but has a long life, the difference between the first and second will become blurred.
You can think of the black hole's horizon as a sphere whose diameter will be proportional to the mass of the black hole. Therefore, the more the quality falls into the black hole, the larger the black hole. However, black holes are small compared to stellar objects because the material is compressed to a very small volume under the force of force majeure. For example, a black hole that weighs the Earth has a radius of only a few millimeters. This is 10,000,000,000 times smaller than the true radius of the Earth.
The radius of the black hole is called the Schwarzschild radius to commemorate Karl Schwarzschild, who first inferred that the black hole is a solution to Einstein's general theory of relativity.
Black holes emit radiation due to quantum effects. It is important to note that these are the quantum effects of matter, not the quantum effects of gravity. The dynamic space-time of a collapsing black hole changes the clarity of the particle. Just like the time-lapse of a black hole, the concept of particles is too dependent on the observer. In particular, when an observer who falls into a black hole thinks that he is in a vacuum, the observer who is away from the black hole thinks that this is not a vacuum, but a space filled with particles. It is the extension of time and space that has led to this effect.
The radiation from the black hole was first discovered by Stephen Hawking and was called "Hawking radiation." The temperature of the radiation is inversely proportional to the mass of the black hole: the smaller the black hole, the higher the temperature. In well-known stars and supermassive black holes, the temperature is much lower than the microwave background temperature, so it cannot be observed.