Stellar interactions refer to the collisions, mergers, or close encounters between stars in a stellar system. These interactions can have a variety of effects on the stars involved, such as triggering supernovae, creating new binary star systems, or disrupting planetary systems. Studying stellar interactions can help astronomers understand the dynamics and evolution of stellar systems, as well as provide insights into the formation and evolution of galaxies. This research area also has implications for understanding the properties and behaviors of different types of stars, as well as the role of stellar interactions in shaping the universe.