What would you expect to be the overall color of a globular cluster of stars? Explain.
A) blue because of the contribution from young and very hot stars in the cluster
B) red because of the emission of light by the hydrogen gas in H II regions surrounding the stars in the cluster
C) red because of the older population of stars in the cluster
D) blue because of the scattering of starlight from the dust surrounding the stars in the cluster
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