SOLUTION: 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? Tha

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Question 33404: 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?
Thank You.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
[9E20]/[1E16]= [9E4] = 9 x 10^4 yrs.
Cheers,
Stan H.