Interstellar comets are comets that originate from outside our solar system and travel through interstellar space. These rare objects can provide valuable insights into the composition and dynamics of other planetary systems. The first interstellar comet, named 2I/Borisov, was discovered in 2019, and since then, astronomers have been studying these objects to better understand their origins and properties. Interstellar comets can help scientists learn more about the conditions in other star systems and the processes that govern the formation and evolution of comets throughout the universe.