The discovery of new planets in other solar systems has become one of the most exciting topics in astronomy and astrobiology. With advances in telescope technology and detection methods, scientists have succeeded in discovering various planets outside our solar system. These observations give us new insight into the possibility of life beyond Earth. Most of these discoveries come from space telescopes such as Kepler and TESS (Transiting Exoplanet Survey Satellite). The main method used is the transit technique, in which a dip in starlight is observed when a planet passes in front of the star. Through this method, astronomers have succeeded in identifying thousands of planet candidates, including those in the habitable zone of their stars. One of the most prominent discoveries is the TRAPPIST-1 system, which consists of seven planets, three of which are in the habitable zone. These planets are similar to Earth and are likely to support liquid water, creating ideal conditions for life. Further studies suggest that the planet’s atmosphere may contain elements essential for life. In addition, the discovery of “super-Earth” planets is attracting increasing attention. Super-Earths are planets that have a mass greater than Earth, but smaller than gas giant planets. For example, the planets LHS 1140 b and K2-72c are examples of super-Earths that could potentially support life, thanks to their precise positions from their host stars. Another star system of interest is the star Proxima Centauri, which has the planet Proxima Centauri b. The planet is located in the habitable zone and may have conditions similar to Earth. Further research into its atmosphere will provide more understanding of the potential for life. The use of advanced computer programs and simulations also plays an important role in this research. Using climate models and planet formation simulations, scientists can estimate the temperature, pressure and atmospheric composition of various planets. This data can help determine possible habitats on these planets. However, the main challenge in exoplanet research is distance. Most of the planets discovered are hundreds to thousands of light years from Earth. This makes direct exploration nearly impossible using current technology. Therefore, astronomers continue to innovate with new methods to deepen our understanding of the atmospheres and conditions on these planets. From one discovery to another, each new discovery invites deep questions. Is there life on these planets? What are their atmospheric and geological characteristics? The discovery of new planets not only adds to the existing list, but also opens up new horizons for further exploration and research. With optimism and ever-improving technology, the future of astronomy promises the discovery of more new planets that may have the potential to support life. The scientific community around the world continues to collaborate and share information, pushing the boundaries of our knowledge and expanding our understanding of this vast and mysterious universe.