how high is the sky?

Answer 1

If you mean the atmosphere surrounding the earth,

"Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night.

The atmosphere has no abrupt cut-off. It slowly becomes thinner and fades away into space. There is no definite boundary between the atmosphere and outer space. Three-quarters of the atmosphere's mass is within 11 km of the planetary surface. In the United States, persons who travel above an altitude of 50.0 miles (80.5 km) are designated as astronauts. An altitude of 120 km (75 mi or 400,000 ft) marks the boundary where atmospheric effects become noticeable during re-entry. The Karman line, at 100 km (62 mi), is also frequently used as the boundary between atmosphere and space."

This, and more, from Wikipedia:
http://en.wikipedia.org/wiki/Earth%27s_atmosphere

Hope this helps!

Answer 2

The sky has no finite boundary, unless one defines the atmosphere as being the physical embodiment of the sky. But then again, the atmosphere has several layers and there's no definite answer as to where exactly the atmosphere ends and space begins.

Answer 3

There is NO SKY.. its just a word for space.. its not like when you look up in your room and see the ceiling, in this case, there is NO ceiling, it goes on and on

Answer 4

Infinate

Answer 5

Unlimited.

Answer 6

high enough for you to fly

Answer 7

infinite

Answer 8

11,394.2543 feet to be exact.