B-Class stars are a type of massive star characterized by their blue-white color and high temperatures, typically ranging from 10,000 to 30,000 Kelvin. They are known for their strong ultraviolet radiation and can be several times more massive than our Sun, classified as O-B-A-F-G-K-M in the stellar classification system. B-Class stars have relatively short lifespans, often lasting only a few million years before evolving into supernovae or other end-of-life stages. These stars are often found in young star clusters and are important for understanding stellar evolution and the dynamics of galaxies. Their intense energy output influences surrounding gas and dust, contributing to the formation of new stars. Examples of B-Class stars include Sirius and Regulus, which are prominent in the night sky.