Rigel, Polaris, and Betelgeuse are classified as Supergiants on the HR diagram. What characteristics do all these stars have in common?
Rigel, Polaris, and Betelgeuse are classified as Supergiants on the HR diagram. What characteristics do all these stars have in common?
The three stars are much older than the Sun.
The three stars are all about the same distance from the Earth.
The three stars are all very hot.
The three stars are all very bright.