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staedtler staedtler
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7 years ago
One light-year is
A)   the distance that light travels in one year.
B)   the time taken for the Earth to orbit the Sun once.
C)   the distance between the Earth and the Sun.
D)   the time taken for light to travel from the Sun to the Earth.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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