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What is defined as the average distance from the Earth to the Sun?
Science
What is defined as the average distance from the Earth to the Sun?
Parsec
Astrological Unit
Astronomical Unit
Light Year
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Energy return of a radar signal after it has hit the target best fits which science term?
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In which constellation was the first double star observed?
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What was the first sound-recording device called?
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What metal is used for most electrical wire and cable?
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Which of the following is not a constellation?
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