The discovery of new planets in our solar system is one of the topics that interests modern astronomy. Since the first telescope was launched, scientists have searched for and analyzed celestial objects. Recently, with advances in telescope technology and observation techniques, the possibility of discovering new planets has become brighter. This allegedly newly discovered planet, often called “Planet X”, is beyond the orbit of Neptune. The discovery began with observations of trans-Neptunian objects (TNOs) which showed strange orbital behavior that could not be explained by existing planetary influences. In-depth research suggests that these objects may be affected by the gravitational forces of a large planet that has not yet been detected. Astronomers use mathematical methods to model gravitational interactions and estimate the positions of possibly hidden planets. In recent years, observations by advanced telescopes such as the Subaru Telescope in Hawaii and the Hubble Space Telescope have provided further information about whether Planet The discovery of this new planet is not only interesting for astronomical research but also opens up many other questions. The questions include the process of planet formation, the dynamics of the solar system, and the possibility of life beyond Earth. Further research on Planet One of the biggest challenges in detecting new planets beyond Neptune is the distance and brightness of the objects. Many objects in the region are too faint to be detected by traditional telescopes. However, the use of AI technology and big data analysis can help scientists identify more subtle patterns. In the coming months or years, it is hoped that further research and more detailed observations will provide strong evidence for the existence of Planet Meanwhile, the discovery of this new planet also aroused wider public interest in space exploration and the importance of science. Ultimately, although many mysteries remain to be solved, this discovery confirms how little we know about our own galaxy and may provide new clues about the origins of life on other planets.