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Given That Our Galaxy Has a Volume of Approximately 8

Question 74

Multiple Choice

Given that our galaxy has a volume of approximately 8 × 1012 ly3, what would be the average minimum amount of time to exchange messages between civilizations if there are currently 125,000 intelligent civilizations in our galaxy?


A) 800 years
B) 1,200 years
C) 200 years
D) 400 years

Correct Answer:

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