The discovery of a new planet in a distant galaxy is one of the most exciting achievements in modern astronomy. Using sophisticated telescopes and the latest observation techniques, scientists have succeeded in identifying a number of planets located outside our solar system. This discovery not only expands our understanding of the universe but also opens up opportunities to search for life beyond Earth. One of the main methods for discovering new planets is transition. This method involves recording changes in a star’s light as a planet passes in front of the star. When a planet passes by, the light received from the star will experience a temporary decrease, which can be measured by telescopes. Recent discoveries by the Kepler Space Telescope have revealed thousands of exoplanets, including planets in the habitable zone. The habitable zone is the area around a star where the temperature is sufficient to allow the existence of liquid water, which is considered essential for the existence of life. The discovery of a planet in this zone is very significant because it increases the possibility that the planet could support life. For example, the planet Proxima Centauri b, located in the habitable zone of the star closest to Earth, has been a major focus of astrobiology research. In recent years, the technology has continued to develop. Telescopes such as the James Webb Space Telescope (JWST) provide a better ability to observe the atmospheres of these planets, looking for signs of gas that might indicate the presence of life. Using spectroscopy, scientists can analyze the composition of planetary atmospheres, looking for potentially promising traces of molecules such as oxygen and methane. The discovery of new planets is not without great challenges. The huge distances make observations difficult, and scientists have to rely on indirect methods to identify and verify the existence of planets. Additionally, there is an urgent need to understand these planets in greater depth, including their size, mass and composition. In recent research, the discovery of an Earth-like planet with a similar size and composition has caused extraordinary enthusiasm. This discovery is the first step for more advanced missions, such as sending a rover in the future for exploration of the planet. Research continues, and each year brings more exciting discoveries. In addition to searching for life, the discovery of new planets in distant galaxies also provides important insights into planet formation and evolution. By studying planets that are different from our own, scientists can delve deeper into the conditions that led to the formation of planets and solar systems. The general public is increasingly encouraged to get involved in space exploration. Citizen Science projects, such as Planet Hunters, allow individuals to help analyze astronomical data and contribute to new discoveries. Being directly involved in space observations creates greater awareness and understanding of science. As our knowledge continues to expand, the discovery of new planets in distant galaxies will remain an exciting field to follow. Each new discovery not only arouses curiosity but also encourages us to consider our place in the universe. Further research is expected to provide answers to big questions about the existence of life beyond Earth and the future fate of our own planet. This discovery is a reflection of scientific perseverance and innovation in understanding space and time.