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Q4 Vocabulary

TermDefinition
Lightyear The distance that light travels in one year.
Astronomical Unit (AU) It equals the average. Distance measured from the center of the sub to the canter of earth.
Universe All of the space and everything in it.
Galaxy A huge group of single stars, star system, star cluster, dust, and gas bound together by gravity.
Celestial Objects
Created by: user-1813869
Popular Earth Science sets

 

 



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