Pages • 2
The Twin Supergiants: Alpha and Beta Centauri Join now to read essay The Twin Supergiants: Alpha and Beta Centauri Hadar, also known as Beta Centauri, is the 10th brightest stars (11th as viewed from Earth). Hadar is a blue-white super giant in the constellation Centaurus (Cen). In about 4,000 years, the motion of Alpha Centauri,.