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ecosystems
biomes
4
Science
7th Grade
04/09/2008
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Term
absolute magnitude
 Definition
the amount of light that a star gives off
Term
apparent magnitude
 Definition
the amount of a star's light that reaches Earth
Term
constellation
 Definition
a group of stars that forms a pattern in the night sky
Term
light-year
 Definition
the distance that light travel in one year
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