"Fast Radio Burst" FRB is a kind of radio wave burst with amazing frequency and intensity. They come from unknown distant galaxies and last only a few milliseconds, but they even carry millions of times as much energy as the sun. \x0d\ Since the discovery of "fast radio burst" (FRB), the mysterious source of this astronomical phenomenon has been puzzling astronomers. All along, the FRB captured by human beings is fleeting, but the fast radio burst numbered FRB 12 1 102 has the unique characteristics of repeated bursts. Is this a common phenomenon or a coincidence? \x0d\ A team is currently studying FRB 12 1 102, which is 3 billion light years away from the Earth. This is the only fast radio burst in which repeated signals have been detected. Scientists have found that this signal is in a strong magnetic field environment, and such a strong magnetic field is only detected near a neutron star near the center of the Milky Way, which is very close to the supermassive black hole in the center of the Milky Way. "For the first time in history, we know something about the environment where the source of the radio storm is located. It is 3 billion light years away from us." Misha chatterjee of Cornell University, co-author of the paper * * *, \x0d\. "We realize that this is the superposition effect of two extremely strange celestial bodies: we need an unprecedented magnetic star and we need to put it next to a huge black hole. But there are indeed such examples in our galaxy. " However, astronomers have not found that the magnetic stars near the center of the Milky Way emit FRB, and the sources of FRB observed at present are usually very far away. \x0d\FRB signals are very strange, which proves that they are really far away from us. The radio waves emitted by them will have dispersion when they pass through the gas clouds and electrons between stars and galaxies, and the degree of dispersion is directly proportional to their distance from us. This shows that FRB can be used as the best tool to detect the structure of the universe. Researchers can not only know how far a certain FRB source is from us, but also know how much interstellar and galactic matter has been transmitted to us from the radio source.