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Why is the sky endless?

Updated: 9/15/2023
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14y ago

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That almost becomes a philosophical question depending on what you define as "sky" and what you define as "endless"

Consider, what is the sky? Is it simply the area that we perceive as being above the horizon? Is it our atmosphere? Is it space?

One might argue that that since we consider it "the sky" when we see it's colourful shades during the day, and we also consider it "the sky" when we see the infinite depths of space at night, then the sky must not be a tangible entity but simply a region of our perception.

In that case, then the answer might be no. The sky has boundaries then, as it ends at the horizon. In that case, the sky might be thought of as an enclosed circle.

But wait - that's only if you consider the perimeter of the sky. If you consider it's depth as we perceive it then the sky is limited during the day, when all we can see is the blue haze of the nitrogen in our atmosphere, but limitless at night, when we can see in to the depths of space.

Even then though you might have a contradiction. Can we really see infinitely into the depths of space? Is space itself truly endless? Here we move into questions whose answers no-one really knows.

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14y ago
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