The discovery of an Earth-like planet in a distant galaxy is one of the greatest achievements in modern astronomy. With advances in telescope technology and observation methods, scientists can now detect planets outside our solar system that have similar characteristics to Earth. These planets, known as exoplanets, offer deep insight into the possibility of life beyond Earth. One of the most influential telescope missions in the search for exoplanets is the Kepler Space Telescope. Since its launch in 2009, Kepler has successfully detected thousands of exoplanets using the transiting method, where a decrease in starlight indicates the presence of a planet passing in front of it. Exciting recent discoveries include planets located within the habitable zone, which is the optimal distance from their host star to allow liquid water — a vital component for life. For example, the discovery of a planet called Kepler-452b has attracted the attention of many researchers. This planet is located about 1,400 light years from Earth and is quite similar to our planet in terms of size and temperature. With a mass estimated to be similar to Earth’s, Kepler-452b has the potential to support life. Such discoveries fuel further speculation and research into the conditions of the atmosphere and its chemical composition. Another method used to find exoplanets is the radial velocity method, in which the movement of a star due to the gravity of the surrounding planet can be measured. In this way, astronomers have discovered several Earth-like planets outside the Milky Way galaxy. These planets provide hope that life may not be limited to Earth alone. In addition, developments in more sophisticated telescope technology, such as the James Webb Telescope, are expected to provide more in-depth information about the atmospheres of these planets. With the ability to detect molecules in the atmosphere, this telescope will likely detect signs of life, such as traces of gases that organisms can produce. Special attention should also be paid to binary star systems and planets orbiting these stars. The new discoveries suggest that these planets may have the same characteristics of life as those in our solar system. As more exoplanets are discovered, hopes of finding a “second Earth” grow stronger, and scientists from various disciplines continue to work to understand more. The locations where Earth-like planets have been discovered vary, from neighboring galaxies such as Andromeda to more distant galaxies. This research aims not only to discover new planets, but also to understand how these planets form and evolve. The data obtained from this search supports theories about the possibility of life beyond our planet and provides insight into how life could exist elsewhere. The importance of the discovery of Earth-like planets in distant galaxies cannot be overstated. Continued research and technological innovations are bringing us closer to the goal of finding out whether we are truly alone in the universe. Awareness of the existence of other planets that may be suitable for habitation opens up opportunities for deeper research and further exploration through future missions.