The discovery of a new planet in a distant galaxy is one of the extraordinary achievements in astronomy. With increasingly sophisticated telescope technology, scientists can now detect objects located far outside our solar system. One method commonly used is transiting exoplanet observations, where a decrease in star light indicates the presence of a planet passing in front of the star. Some galaxies that have attracted the attention of scientists are the Andromeda and Perseus Galaxies, where a number of exoplanets have been detected. This discovery not only increases our knowledge about the structure of the universe, but also opens up the possibility of life beyond Earth. Astronomers use spectroscopy to analyze the planet’s atmosphere. The composition of gases such as carbon dioxide, methane and water is an important indicator of the possibility of life. These new planets are often different from those in our solar system. For example, some of them are “hot Jupiters”, namely large planets that are very close to their parent stars. The process of planet formation remains a mystery, with many theories speculating about planetary migration through gravitational interactions. The discovery of planets in distant galaxies also includes planets in the habitable zone, where liquid water is possible. According to data obtained from the Kepler mission, several Earth-sized planets have been discovered, which have the potential to support microbial life. This raises an interesting question: are we alone in the universe? Research also uses telescopes such as the James Webb Space Telescope to get clearer images of these planets. With higher resolution, scientists can examine the mineralology of exoplanets and understand more about their surface conditions. In recent years, international collaboration between astronomical institutions in various countries has accelerated these discoveries. By sharing data and resources, researchers can expand the horizons of knowledge about the universe. Examining planets in distant galaxies also applies new technologies such as Artificial Intelligence (AI) to analyze big data from observatories. This approach helps in finding patterns that might be missed by manual analysis, thereby enabling the discovery of more exoplanets. In the context of astrobiology, this discovery is not only of interest to academics, but also to the general public. Interest in the search for life beyond Earth has sparked numerous discussions, seminars and educational programs around the world. STEM (Science, Technology, Engineering, and Mathematics) education is becoming increasingly important to prepare the next generation for the challenges of space exploration. With the increasing number of planets discovered, the biggest challenge now is to carry out further exploration. Space missions to these planets, whether through unmanned probes or future human exploration, could be the next step to a deeper understanding of the potential for life beyond Earth. In the future, we can also expect the use of new technologies, such as more efficient propulsion systems, to reach these planets in a shorter time. Additionally, space colonies for long-term research on other planets or moons may become a reality. From surprising discoveries to in-depth research, the discovery of new planets in distant galaxies continues to arouse human curiosity. Each discovery opens up new possibilities and brings us closer to a better understanding of our place in this vast universe.