Which of these is NOT typical of the Galaxy's spiral arms?
A) O and B stars
B) Population II giants like orange Arcturus
C) emission nebulae like M42
D) hot, young blue Population I stars
E) open clusters

Question

Quizplus · Accepted Answer

Population II giants, like orange Arcturus, are not typically found in the Galaxy's spiral arms. Spiral arms are known for their young, hot stars (such as O and B stars), emission nebulae, and open clusters, all of which are characteristics of Population I stars. Population II stars are older and are usually found in the galaxy's halo and bulge, not in the spiral arms.

Which of These Is NOT Typical of the Galaxy's Spiral