At present, there are two journals on cosmic astronomy in the world, one is the American Journal of Astrophysics for short APJ, and the other is the British "Royal Astronomical Monthly" referred to as MNRAS, both of which are committed to some new discoveries in human exploration of the universe.
Recently, Russian scientists published an article in the Royal Astronomical Monthly that at the center of each galaxy, there is a supermassive black hole, and these supermassive black holes may be the gateway to the rest of the universe, and the "interstellar gate" often referred to as "interstellar gate" may be hidden in it.
The concept of interstellar gates originated from science fiction, which means that in space, due to a strong magnetic field or gravitational distortion, a "channel" can be produced to the rest of the universe, in which it can transcend the shackles of time and space, even if it is far away, it can be reached in a short time.
The reason why science fiction is so enthusiastic about interstellar gates is that the universe is too large, even as the milky way of the galaxy, nearly 200,000 light-years in diameter, even if it takes 200,000 years to fly at the speed of light, for human limited life, this long time is a hurdle that human interstellar travel cannot pass.
In addition, in "Relativity", the ultimate speed of the universe is the speed of light, and it is impossible for any object that can transmit information to escape the limit of the speed of light, that is to say, it is impossible for humans to obtain more than the speed of light, thus locking humans in a small space.
There is a saying that God opens a door and closes a window, and conversely, God opens a window while closing a door.
At the same time that the "Theory of Relativity" limits human beings to exceed the speed of light, the "wormhole" theory derived from "Relativity" (also known as: Einstein-Rosen Bridge) provides another possibility for human beings, that is, human beings do not need to exceed the speed of light, and can also travel through the universe, which is the "interstellar gate" of human beings.
For a long time, it was thought that wormhole theory was too sci-fi and existed only in theoretically derived models. But in recent years, even the gravitational waves that Einstein felt impossible to exist before his death have been detected by humans, so is it possible that the wormholes derived by Einstein also exist?
With the deepening of research in recent years, scientists have gradually realized that "wormholes" may not only stay at the level of theoretical derivation, but also may exist in the universe like gravitational waves, but they have not been observed by humans.
According to the theory of relativity, the energy required to form a wormhole or interstellar gate is very huge, and there can be such a huge energy, only a black hole, and a black hole that is supermassive, can reach such a large energy level.
In each galaxy, there is such a super-large black hole, such as Sagittarius A, located at the center of the Milky Way, which is massive and has a strong gravitational force, so that it can maintain the operation of galaxies with a diameter of 200,000 light-years.
When a black hole is massive enough, it creates a gravitational pull large enough to distort space-time. And if the distortion of space-time caused by the two black holes is connected together, it forms a wormhole and becomes the interstellar gate.
Although the theory is so, but the pessimistic thing is that even if a black hole can become a wormhole, it is not suitable for humans to travel, and some studies believe that although black holes can form a channel connecting the rest of the universe, this channel is extremely narrow, and can only pass through one elementary particle at a time.
And the strong gravitational force of the black hole exists, any object that falls into it, will be stretched, compressed into elementary particles, like interstellar travel, the kind of situation that falls the black hole, and then retreats from the whole body, obviously cannot exist in reality.
Life is constantly struggling, as long as human beings exist for one day, the pace of exploring the universe will not stop. The level of human science and technology is also from scratch, and then developed to the current level, with the deepening of research, the understanding of the universe is also more and more deep, perhaps one day in the future, human beings to find the ultimate mystery of the universe, break through the limit, in a way that now human beings can not imagine, in the universe shuttle travel.