document.write( "Question 45626: Help.\r
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\n" ); document.write( "\n" ); document.write( "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?
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Algebra.Com's Answer #30310 by Nate(3500)\"\" \"About 
You can put this solution on YOUR website!
(9 x 10^20)/(10^16)
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\n" ); document.write( "90,000 years
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