Denebola is the third-brightest visible star of Leo, the lion. Also known as Beta Leonis, it represents the lion's tail. It is roughly 75 percent more massive than the Sun and about 15 times brighter. It is also much wider than the Sun, and it spins so rapidly that it's wider through the equator than through the poles. Denebola is 36 light-years away and less than one-tenth the Sun's age. Its surface is much hotter than the Sun's so Denebola shines pure white.