B-type Main-Sequence Stars are a class of stars that are larger and hotter than the Sun. They have surface temperatures ranging from about 10,000 to 30,000 Kelvin and are typically blue or blue-white in color. These stars are very luminous, often shining thousands of times brighter than the Sun, and they burn through their hydrogen fuel much faster than cooler stars. These stars are part of the Hertzsprung-Russell diagram, which categorizes stars based on their brightness and temperature. B-type stars have relatively short lifespans, usually lasting only a few million years before evolving into supernovae or other stellar remnants.