document.write( "Question 193796: The diameter of the Milky Way disc is approximately 9 x 10^20 meters. How long does it take light, traveling at 10^16 m/year to travel across the diameter of the Milky Way? \n" ); document.write( "
Algebra.Com's Answer #145483 by Mathtut(3670)\"\" \"About 
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\"9%2A10%5E20%2F10%5E16=9%2A10%5E4=90000\"years \n" ); document.write( "
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