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Astronomy definitions for Stark County Jr. High

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definition
Vocabulary word
the distance that light travels in a year   light year  
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study of the universe   astronomy  
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when the moon blocks the sun's light over a part of earth   solar eclipse  
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the brightness of a star as viewed from Earth   apparent magnitude  
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third rock from the sun   Earth  
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a large body that revolves around a star   planet  
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a pattern of stars in the sky   constellation  
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a hot rotating ball of hydrogen and helium gases that creates its own light through nuclear fusion reactions   star  
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billions of stars held together by gravity   galaxy  
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huge clouds of gas and dust where the stars and planets are born   nebulas  
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a small object made up of ice, frozen gas and dust (dirty snowball) that orbits the sun   comet  
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the measure of a star's true brightness   absolute magnitude  
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source of huge amounts of energy in form of radio waves   quasar  
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the band of constellations through which the sun appears to pass through the year   zodiac  
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when the earth's shadow falls across the moon   lunar eclipse  
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family of planets and moons that revolves around a star   solar system  
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a tiny bit of metal and rock from a comet that travels through space   meteoroid  
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a natural satellite of a planet   moon  
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the force that attracts objects to each other   gravity  
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an area of cooler temperatures on the sun where magnetic activity occurs   sunspot  
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Created by: cstoner
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