The Following Questions Refer to the Sketch Below of an H-R

question 43

Multiple Choice

The following questions refer to the sketch below of an H-R diagram for a star cluster.

-Based on its main-sequence turnoff point,the age of this cluster is

• A)less than 1 billion years.
• B)about 1 billion years.
• C)about 2 billion years.
• D)about 10 billion years.
• E)more than 15 billion years.

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