The discovery of a new planet in a distant galaxy is one of the greatest achievements in modern astronomy. With advances in telescope technology and observation methods, scientists have now succeeded in detecting a number of planets that were previously invisible. These planets are located in galaxies very far from Earth, often beyond the reach of our solar system. One method commonly used to discover new planets is the transit method. This method involves observing a star that suddenly dims periodically, which indicates the presence of a planet revolving around the star. Using telescopes such as Kepler and TESS (Transiting Exoplanet Survey Satellite), astronomers can calculate the size, mass and distance of planets from their stars. In recent years, a number of surprising discoveries have shocked the world of astronomy. One of them is the discovery of a new planetary system called LHS 1140, which contains planets similar in size to Earth and located in the habitable zone. These zones are areas around stars where water can exist in liquid form, increasing the possibility of life. Advances in spectroscopy have also allowed scientists to analyze the atmospheres of distant planets. Some of the new planets show signs of gases that could support life, such as methane and oxygen. This discovery gives hope that there may be other forms of life beyond Earth. Research continues, and future telescopes such as the James Webb Space Telescope (JWST) are expected to provide further insight into the properties of these planets. JWST can see infrared light, allowing astronomers to observe fainter and more distant objects. With this capability, scientists can delve deeper into the atmospheric composition and potential habitability of new planets. The existence of new planets in distant galaxies not only attracts the attention of scientists, but also the general public. This discovery sparked curiosity to explore further into space, opening up the possibility of space missions and further research. The existence of these exoplanets also raises questions about how planetary systems form and function in galaxies that are very different compared to our solar system. Various planet formation models continue to be developed to understand the processes that occur out there. With each new discovery, we move closer to answering fundamental questions about our place in the universe. The discovery of a new planet in a distant galaxy is an important step in humanity’s long journey to understand space and the potential for life beyond Earth. The ever-increasing research focus will shape the future of space exploration, as well as increase our insight into the existence of planets in other galaxies.