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Astronomy Final (Varn) 12/15/09
100 questions, starts at six
6
Astronomy
Undergraduate 2
12/14/2009
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Term
light year
 Definition
the distance that light travels in one year (6 trillion miles)
Term
radiation
 Definition
almost everything we know about the universe comes from
Term
ecliptic
 Definition
the _________ is the path of the sun across the sky during the course of a year
Term
retrograde
 Definition
the backwards motion of the planets in the sky
Term
earth shine
 Definition
light from the earth that reflects back to the moon
Term
earth shine
 Definition
light from the earth that reflects back to the moon
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