Open clusters are groups of stars that are born from the same molecular cloud and are gravitationally bound together. They are relatively young compared to globular clusters, typically ranging in age from tens of millions to a few hundred million years. Open clusters are important to study because they provide valuable information about star formation, stellar evolution, and the overall structure of the galaxy. Due to their relatively young age, open clusters typically contain stars that are still in the process of evolving, making them excellent laboratories for studying stellar physics. Researchers study open clusters by observing their distribution in the sky, measuring the ages and masses of their constituent stars, and analyzing their chemical compositions. By studying open clusters, scientists can gain insights into the processes that drive star formation and evolution, as well as the dynamics of our own Milky Way galaxy.