The discovery of a new planet in the solar system is an important step in astronomy and space exploration. The use of advanced technology such as telescopes and observatories enhances scientists’ abilities to detect previously invisible celestial objects. Recent research shows the potential for a new planet which could be a candidate for planet 9. This planet, known as “Planet X”, is believed to be located far beyond Neptune. Data from a number of observations shows the existence of a large object that could shake our understanding of the solar system. Researchers at Caltech revealed that the shift in the orbit of the trans-Neptunian object indicates the gravitational influence of another large object. The use of algorithms and mathematical models helps scientists predict the existence of these objects. Its size is estimated to be larger than Earth, it has a long elliptical orbit. This planet has the potential to provide new insight into how planets form and interact with each other in the solar system. The interest of many researchers in finding more information has led to the development of further exploration missions using space probes. In addition, better imaging technology allows the detection of small objects in the outer solar system. This discovery provides an opportunity to study various phenomena such as the atmosphere, chemical composition, and magnetic interactions. This new planet could potentially have an atmosphere that supports life or be home to stored ice and water. The public also plays the role of observers with access to digital platforms that allow them to see the latest research results. The discovery of new planets is also important in an educational context. Many universities and research institutions are taking advantage of this discovery to encourage students’ interest in science and astronomy. Based on the simulations and data collected, more observations in the future are expected to increase the validity of these findings. Projects such as the Outer Solar System Survey and subsequent investigations by NASA are strategic steps to uncover the mysteries of planets that may be hidden on the outskirts of the solar system. This discovery not only attracted the attention of scientists, but also sparked debate among astronomers regarding the classification and definition of planets themselves. This discussion is directed at clarifying the boundaries between planets and other celestial bodies. There is hope that over time, this new planet could become a research object rich in information about the history and evolution of the solar system. The solar system as we know it will probably grow more complex with each new discovery. Scientists are committed to deeper exploration and understanding, opening new horizons in space science and technology. This discovery proves that astronomy is a field that is always developing, full of surprises and challenges.