Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Beta Libra is the brightest star in the constellation Libra. Beta Librae is a blue dwarf star of spectral type B8, a little less evolved than Sirius. It has apparent magnitude 2.7. At a distance of 160 light years from Earth, it is about 130 times more luminous than the Sun and has a surface temperature of 12,000 K, double that of the Sun. This high temperature produces light with a simple spectrum, making it ideal for examining the interstellar gas and dust between us and the star.