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Physics, 18.12.2019 07:31 Lizzy527663
You observed three different star clusters and found that the main-sequence turnoff stars in cluster 1 had spectral type a, the main-sequence turnoff stars in cluster 2 had spectral type b, and the main-sequence turnoff stars in cluster 3 had spectral type g. which star cluster is the oldest
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You observed three different star clusters and found that the main-sequence turnoff stars in cluster...
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