James Webb Telescope (JWST) observations have opened a new window in our understanding of the universe, with the ability to discover previously undetected hidden galaxies. This telescope is designed to search for infrared light emitted by distant and cold objects in the cosmos. One of the most striking discoveries JWST has made is its ability to detect galaxies that emerged in the early period of the universe’s formation, providing important insights into galaxy evolution. These galaxies are often obscured by dust and gas, which makes observation through ordinary telescopes difficult. JWST uses advanced technology, including a 6.5 meter mirror and sensitive instruments that can detect wavelengths of light longer than visible light. This allows scientists to observe older, fainter galaxies that are forbidden by stronger light. One galaxy that attracts attention is a galaxy that Jako labels “oldest galaxy.” With the discovery of this galaxy, astronomers can solve a number of puzzles about how galaxies form and evolve. The analysis shows that although this galaxy is very far from us, it contains information about star formation and dark matter, which are key components in the structure of the cosmos. JWST’s observations are not limited to old galaxies. The telescope has also detected galaxies in the early stages of formation. The data shows that these galaxies had very high star formation rates, unlike the galaxies we see today. This phenomenon provides a scenario that explains how galaxies change over time and how their environment influences their evolution. Furthermore, JWST has also served to map the distribution of galaxies within certain clusters, providing deeper insight into interactions between galaxies. This discovery is important for understanding not only the shape and size of galaxies, but also the gravitational interactions that can result in the formation of new galaxies or shifts in the positions of existing galaxies. The findings from JWST have advanced our understanding of the grand structure of the universe, and they are a step forward in answering fundamental questions about the origins and evolution of the cosmos. The hidden galaxies uncovered by JWST shed light on more aspects of the history of the universe, expanding our knowledge and encouraging further research in astrophysics. With increasingly rich results, JWST is expected to continue the discovery of many other hidden galaxies, exploring further into space and time. This discovery will be a stepping stone in exploring the mysteries of the universe and could change the paradigm we currently have regarding galaxy formation. This new knowledge is not only important for scientists, but also enriches the general public’s understanding of our place in the vast universe.