Hot Jupiters are a class of exoplanets that are similar in size to Jupiter but orbit much closer to their parent stars. These planets typically have orbital periods of less than 10 days and are located within a few million kilometers of their host stars. As a result, they experience high levels of irradiation and have high surface temperatures, leading to the classification as "hot" Jupiters. Hot Jupiters were among the first exoplanets to be discovered, and their study has provided valuable insights into the formation and evolution of planetary systems. They have also raised questions about the migration and dynamics of planets within planetary systems. Researchers study hot Jupiters through a variety of methods, including transit photometry, radial velocity measurements, and direct imaging. Overall, the study of hot Jupiters has been instrumental in advancing our understanding of exoplanets and planetary systems, and continues to be a fruitful area of research in the field of astronomy.