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# What is the approximate percentage of the earth that is illuminted by the sun?

Updated: 9/23/2023

Wiki User

10y ago

That should be approximately 50%, considering that the Earth is round, and the Sun is almost a point-source at a fairly large distance (compared to the size of the Earth). This does not consider clouds or mountains blocking sunlight. Considering that we don't see the Sun exactly as a point, as well as atmospheric refraction, the actual percentage is somewhat larger - once again, if you don't consider mountains or clouds.

Wiki User

10y ago

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Q: What is the approximate percentage of the earth that is illuminted by the sun?
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