From its position in the Hertzsprung-Russell diagram in Figure 10-7 of Comins,Discovering the Essential Universe,6th ed.,what can you conclude about the star Mira compared with the Sun?
A) Mira is cooler and redder but intrinsically brighter than the Sun.
B) Mira is cooler, redder, and intrinsically fainter than the Sun.
C) Mira is hotter than the Sun and intrinsically brighter.
D) Mira is hotter and bluer but intrinsically fainter than the Sun.

Question

Quizplus · Accepted Answer

Mira is a red giant star, which means it is cooler and redder than the Sun but has a higher luminosity, making it intrinsically brighter.

From Its Position in the Hertzsprung-Russell Diagram in Figure 10-7