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symbo symbo
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Posts: 1970
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7 years ago
What fraction of the stars surrounding the Sun are main-sequence stars?
A)   Almost all of them, about 90%
B)   There are no main-sequence stars close to the Sun
C)   Roughly half of them, about 55%
D)   Very few of them, about 20%
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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papachulopapachulo
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7 years ago
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symbo Author
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6 years ago
Very informative, I appreciate the extra effort
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