B-type stars are a class of hot, luminous stars that have surface temperatures ranging from about 10,000 to 30,000 Kelvin. They are typically blue in color and are much more massive than the Sun, often exceeding two to three times its mass. These stars are known for their strong stellar winds and rapid rotation, which can lead to the formation of nebulae around them. These stars are relatively short-lived, with lifespans of only a few million years. They play a crucial role in the evolution of galaxies by contributing to the chemical enrichment of the interstellar medium through supernova explosions at the end of their life cycle.