How does Rigel, a bluish star, surface temperature compare to Betelgeuse, a reddish star.
A) Rigel's surface temperature is less than Betelgeuse's.
B) Rigel's surface temperature is greater than Betelgeuse's.
C) They have the same surface temperature because they are both members of the constellation Orion.
D) It is impossible to say without knowledge of the sizes of the stars.

Question

Quizplus · Accepted Answer

Bluish stars like Rigel are hotter than reddish stars like Betelgeuse.

How Does Rigel, a Bluish Star, Surface Temperature Compare to Betelgeuse