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Sunday, September 3, 2017

How much of the Earth can you see at once?

If you are of average height, the horizon is a little less than 3 miles away, so you can see that far in a circle around you.
Call it 27 square miles give or take.

Earth’s surface area is, per Wikipedia, 197 millon square miles. So you can see a little less than 1/7,450,000th of the earth’s surface. Or just about 0.0000134% of it.

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