document.write( "Question 1140656: https://apod.nasa.gov/apod/ap190506.html
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\n" ); document.write( "what's the principle here?
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Algebra.Com's Answer #761179 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
https://apod.nasa.gov/apod/ap190506.html
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\n" ); document.write( "what's the principle here?
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\n" ); document.write( "Not clear.
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\n" ); document.write( "Maybe gravity?
\n" ); document.write( "Nice video, tho.
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