How does the brain interpret the blue atmospheric layer when viewed from orbit, as opposed to on Earth?

Answer

As a distinct, luminous object separating the surface from the void.

On Earth, the blue is the default background; in orbit, the finite blue shell is processed as a distinct, luminous object adjacent to the planet rather than an infinite expanse.

How does the brain interpret the blue atmospheric layer when viewed from orbit, as opposed to on Earth?
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