Reporters learned from the National Space Science Center of the Chinese Academy of Sciences on the 16th that scientific researchers from the center and other units revealed for the first time through three-dimensional numerical simulation that when the metal lunar core inside the moon "feels" the sudden change of the space magnetic field, it will generate induced current and induced magnetic field like electromagnetic induction. This force will squeeze the solar wind around the moon, forming a special "compression zone" on both sides of the moon. This discovery provides a new perspective for understanding the interaction between the moon and solar wind. The relevant research results have been published in the Astrophysical Journal and the Monthly Notices of the Royal Astronomical Society. Although the moon does not have a global magnetic field, it has a conductive metal core inside. When there is a sudden change in the interplanetary magnetic field from the sun in space, a circular current is induced inside the lunar nucleus like a generator, which in turn generates an instantaneous induced magnetic field around the moon. This induced magnetic field will affect the plasma environment around the moon, ultimately forming edge compression structures. This time, the research team used 3D simulation technology to clearly reproduce this process. Further research shows that the larger the simulated lunar nucleus radius, the higher the conductivity, and the stronger the external magnetic field mutation, the more pronounced the edge compression phenomenon becomes; But after the nuclear conductivity exceeds a certain value in the current month, increasing the conductivity has little effect on the results, which is consistent with the classical theory of magnetic induction of conductive spheres. This study not only reveals the important role of the lunar conductive core in the interaction between solar wind and the moon, but also provides new evidence for future exploration of the internal structure of the moon. (New Society)