I mean, at what height above ground does it start? 1 inch, 1 foot, 1 yard, 1 mile?
Is there an official definition?
:gandelf:
P.S. Like my new title Nana. Perhaps "smilie" should be "Smelly" ?

So it's up to every man to decide where it begins really.from Wikipedia.org wrote:The concept of the sky, as it is applied here on Earth, can be generalized to mean the hemisphere above the horizon, or above the visible surface of the planet and objects attached to it. It can be seen when one looks upward from the surface of a planet (see Skies of other planets). The sky is also sometimes defined as the denser gaseous zone of a planet's atmosphere. Birds, airplanes, and kites are often considered to fly in the sky.