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?
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Question 188666: 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? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! 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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d = rt
t = d/r
t = 9E20/1E16 = 9E4 years
t = 90,000 years
