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staedtler staedtler
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7 years ago
How large was the Sun when it first formed as a protostar?
A)   About five times its present diameter
B)   About fifteen times its present diameter
C)   About fifty times its present diameter
D)   The same diameter that it has now
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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staedtler Author
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7 years ago
On behalf of my study group and I, thank you
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