Deneb is one of the brightest stars in the night sky and is part of the constellation Cygnus, also known as the Swan. It is located approximately 1,425 light-years away from Earth and is classified as a blue supergiant star. Deneb is notable for its immense size and luminosity, being about 200,000 times brighter than the Sun. As a key star in the Summer Triangle, Deneb is often used by astronomers for navigation and to help locate other celestial objects. Its name comes from the Arabic word for "tail," reflecting its position in the constellation. Deneb is also significant in the study of stellar evolution due to its advanced stage in the life cycle of massive stars.