Here's a breakdown:
1. The sky as the atmosphere:
* The Earth's atmosphere does have a limit. It gradually thins out as you go higher, but there's no definitive "edge".
* The Kármán line, at 100 kilometers (62 miles) above sea level, is often used as a rough marker for the boundary between the atmosphere and outer space.
* However, even beyond the Kármán line, there are still traces of atmosphere.
2. The sky as what we see:
* The "sky" we see is the result of sunlight scattering in the atmosphere.
* This scattering effect creates the blue color we perceive.
* As you go higher, the atmosphere gets thinner, and the scattering effect decreases. This is why the sky appears darker in space.
3. The sky as an abstract concept:
* Some people think of the sky as something infinite, a vastness beyond our comprehension.
* In this sense, there's no physical limit, but it's a more philosophical idea.
So, to answer your question:
* The Earth's atmosphere has a limit, but it's not a sharp boundary.
* The blue "sky" we see is limited by the atmosphere's thickness and the scattering of light.
* The sky as an abstract concept has no limit.
It ultimately depends on your interpretation!
