O-type Main Sequence Stars are among the hottest and most massive stars in the universe. They have surface temperatures exceeding 30,000 Kelvin and can be up to 90 times more massive than our Sun, Sol. These stars emit a blue light and have short lifespans, typically lasting only a few million years before evolving into supernovae. Due to their high temperatures, O-type stars produce significant amounts of ultraviolet radiation, which can influence the surrounding interstellar medium. They often form in clusters and play a crucial role in the chemical enrichment of galaxies, contributing to the formation of new stars and planetary systems.