How is the age of the galaxy determined
A) measuring the metallicity of Population II stars
B) finding the turnoff point in the H-R diagram of globular clusters
C) from the motion of stars in the galactic halo
D) counting the number of open clusters in the spiral arms
Correct Answer:
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Q28: Figure 12-1 Q29: The traditional "top-down" hypothesis of the formation Q31: What behavior do galactic rotation curves exhibit Q32: How did Harlow Shapley determine where the Q33: The Herschels' grindstone model of the Milky Q34: This is a "thought" question. Why are Q35: In the edge-on sketch of a spiral
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