Exoplanetary systems are collections of planets that orbit stars outside our solar system. These systems can vary widely in their composition, size, and distance from their host stars, leading to a diverse range of environments. Some exoplanets are similar to Earth, while others are gas giants like Jupiter or Neptune. The study of exoplanetary systems helps scientists understand the formation and evolution of planetary systems, including our own. By observing these distant worlds, researchers can gather valuable data about their atmospheres, potential habitability, and the conditions that might support life, making it a fascinating field of study.