In a hypothetical infinite, static universe, how do the effects of distance dimming and object density balance out regarding sky brightness?

Answer

The two effects cancel each other out perfectly.

The surface brightness of a distant object decreases with the square of the distance, but the number of objects in that volume increases with the square of the distance, causing these two effects to cancel out, resulting in constant perceived brightness.

In a hypothetical infinite, static universe, how do the effects of distance dimming and object density balance out regarding sky brightness?

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Why is it Dark at Night? - YouTube

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