COSMIC PERSP.FUND.-MASTERING ASTRONOMY
COSMIC PERSP.FUND.-MASTERING ASTRONOMY
3rd Edition
ISBN: 9780134989273
Author: Bennett
Publisher: PEARSON
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Chapter 9, Problem 12QQ

Choose the best answer to each of the following. Explain your reasoning.

Which of these star clusters is oldest? (a) a cluster whose brightest main-sequence stars are white (b) a cluster whose brightest main-sequence stars are yellow (c) a duster containing stars of all colors

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