In the last decade, the discovery of new planets in the solar system has attracted the attention of scientists and astronomy enthusiasts around the world. This discovery not only adds to the number of objects we know about in our environment, but also provides new insights into how our solar system formed and evolved. One of the most exciting discoveries was a planet known as “Planet X,” thought to lie far beyond the orbit of Neptune. Researchers use data from advanced telescopes and observatories, such as the Hubble Space Telescope, to detect the presence of these mysterious objects. Mathematical models show that Planet In addition, the discovery of trans-Neptunian objects (TNO) such as Eris and Haumea has opened new discussions regarding the definition of planets themselves. TNOs are objects beyond Neptune’s orbit that have the potential to vary in composition and size. The existence of many TNOs suggests structural complexity and diversity beyond the major planets, challenging our traditional view of the solar system. In addition, exploration discoveries using remote sensing techniques have also provided insight into the possible existence of other planets. For example, space missions such as Dawn and New Horizons provide clearer images of some trans-Neptunian objects and their moons. In these missions, scientists analyze the surfaces and atmospheres of these objects for signs of geological activity or even the presence of ice and water. As technology advances, methods such as planetary transit searches, used in the Kepler mission, allow scientists to discover smaller and more distant planets. Through analysis of starlight reduced by a passing planet, researchers can determine the size and orbit of the planet, facilitating the discovery of planets in the habitable zone where conditions might support life. The development of computers and machine learning algorithms has also accelerated the process of searching for exoplanets. By utilizing intelligent computing, researchers can analyze big data from telescopes more efficiently. This method has the potential to reveal many more planets in this solar system, as well as other stars. Based on all these findings, astronomers are increasingly convinced that our solar system may be much more complex and richer than we previously thought. The discovery of a new planet is an important step towards a deeper understanding of the origins and development of the solar system, opening up new opportunities for future research and exploration.