O-type stars are among the hottest and most massive stars in the universe, with surface temperatures exceeding 30,000 Kelvin. They are typically blue in color and can be up to 100 times more massive than our Sun, known as Sol. Due to their immense energy output, they have short lifespans, often only a few million years. These stars are significant in the study of stellar evolution and the formation of nebulae. O-type stars emit strong ultraviolet radiation, which can ionize surrounding gas and contribute to the creation of new stars. Their explosive deaths as supernovae also play a crucial role in enriching the interstellar medium with heavy elements.