FOMALHAUT - is the brightest star in the constellation Piscis Austrinus and one of the brightest stars in the night time sky. Its name means "mouth of the whale", It is approximately 25 light-years from Earth.Until about March 2000, Fomalhaut and Achernar were the two first magnitude stars furthest in angular distance from any other first magnitude star in the celestial sphere. Antares, in the constellation of Scorpius, is now the most isolated first magnitude star.
Fomalhaut is believed to be a young star, only 200 to 300 million years old, with a potential lifespan of only a billion years. Compared to the Sun, its mass is about 2.3, its luminosity is about 15, and its diameter is roughly 1.7.
