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adreamer adreamer
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6 years ago
The astronomical unit (AU) is defined to be equal to the
A) average distance between the Earth and Sun
B) average distance between the Sun and the planet Pluto
C) distance between the Sun and the nearest star
D) diameter of the Earth
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Life in the Universe

Life in the Universe


Edition: 4th
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DonskoyDonskoy
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6 years ago
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adreamer Author
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6 years ago
Correct again
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