Multiple Choice
Which sequence of formation by age is correct,oldest to youngest?
A) dark nebulae, planetary nebulae, emission nebulae
B) spiral arms, bulge, halo
C) halo, spiral arms, globular clusters
D) globular clusters, emission nebulae, open clusters
E) Population I stars, Population II stars, Population III stars
Correct Answer:
Verified
Correct Answer:
Verified
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