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doit_the_clown doit_the_clown
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7 years ago
Suppose that, when the stars in a particular open star cluster are plotted in a Hertzsprung-Russell diagram, the turnoff point is at an absolute magnitude of +3. What is the approximate age of this cluster? (See Figure 12-24, Comins and Kaufmann, Discovering the Universe, 7th Ed.)
   A)  100 million years    B)  500 million years    C)  4 billion years    D)  1 billion years
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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doit_the_clown Author
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7 years ago
Thank you, thank you, thank you!
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