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solor system...

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
names somes objects that are in our solar system.   1 medium sized star(the sun)(only star in our solar system)at the center,planets  
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how manny about stars are are in the milky way galaxy?   200-500 stars  
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what arm of the milky way galaxy are we in?   orion arm  
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what is a galaxy made of?   billons of stars,planets,gas and dust  
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do stars move?   no  
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do earth and planets move?   yes  
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what is an astronomer?   people who study space  
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name 2 things about the sun.   our solar system's only star,997 of the mass of our solar system  
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name 3 things about the sun.   made up of hydrogen and helium,the hydrogen and helium makes a neclear fusion which puts off light energy and heat energy.sun's gravity holds all our planets in orbit  
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