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symbo symbo
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7 years ago
How much time does it take for a 1-solar-mass protostar to finish accreting mass from the interstellar cloud?
   A)  10,000 years    B)  100,000 years    C)  1 billion years    D)  10 million years
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Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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7 years ago
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symbo Author
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6 years ago
This did it for me! Thank you
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