The discovery of a new planet in a distant galaxy provides deep insight into the possibility of life beyond Earth. Astronomers use a variety of advanced technologies to detect exoplanets, including space telescopes and ground-based observatories. One of the main methods used is transit photometry, in which the dip in a star’s light when a planet crosses its front is measured to determine the planet’s size and orbit. In recent years, other methods such as radial velocity and microlensing have also been successful in discovering interesting new planets. The existence of these planets in distant galaxies challenges our understanding of planet formation and the dynamics of other star systems. For example, the discovery of a planet located in the habitable zone, where temperatures allow liquid water, sparked discussions about the potential for life. One striking example is the discovery of TOI-849b, a giant planet that has 3 times the mass of Earth and is located outside the Milky Way Galaxy. This planet offers a new picture of how gas giant planets form. Further research showed that by using the infrared spectrum, astronomers could analyze the planet’s atmosphere, explore the chemical elements present, and assess the possible presence of gases that could indicate biological activity. At the same time, the discovery of small planets in proximal systems, such as TRAPPIST-1, shows that not only large planets are of interest, but also small planets have the potential to support life. The system consists of seven planets, some of which are in the habitable zone, indicating many possibilities for future astrobiology research. The identification of this new planet also stimulates questions about interactions between planets and their impact on environmental conditions. For example, the presence of a planet with a stable orbit near a particular star can affect the ecosystem of other planets in the same system. Interestingly, cutting-edge technologies such as AI (Artificial Intelligence) and machine learning are now being applied to analyze data more efficiently, helping astronomers discover patterns that might not have been detected before. In addition, observatories such as the James Webb Space Telescope (JWST) and TESS (Transiting Exoplanet Survey Satellite) are increasingly expanding our ability to observe exoplanets, reaching more and more distant galaxies. In this context, the need for international collaboration in the observation and research of new planets is increasingly important. Research institutions and universities around the world are working together to explore this data, accelerating progress in the search for life beyond Earth. Hopes are growing that somewhere in the vast galaxy, there may be a planet that is not only similar to Earth, but also has diverse life. These discoveries prove that science continues to explore the boundaries of our knowledge of the magnificent universe.