how far is it,from the ground to the edge of the atmosphere.?

Answer 1

There is no precise distance, as the atmosphere gets progressively thinner, and some molucules are detectable thousands of miles up.

However, NASA gives Astronaut Wings to any pilot in a vehicle exceeding 50 miles (about 80km). The experimental rocket plane X15 went this high in about 1960. At that altitude there is effectively no air resistance on a high-speed object, air-breathing engines like ramjets and scramjets can't work and wings and fins can't steer an aircraft (the X15 had little thrusters in its nose to ensure that it came down nose-first).

So, 50 miles is a s good an answer as any.

Answer 2

Exactly zero to the closest edge. The furthest edge is harder to define.

* troposphere: From the Greek word "tropos" meaning to turn or mix. The troposphere is the lowest layer of the atmosphere starting at the surface going up to between 7 km (4.4 mi) at the poles and 17 km (10.6 mi) at the equator with some variation due to weather factors. The troposphere has a great deal of vertical mixing due to solar heating at the surface. This heating warms air masses, which then rise to release latent heat as sensible heat that further uplifts the air mass. This process continues until all water vapor is removed. In the troposphere, on average, temperature decreases with height due to expansive cooling.

* stratosphere: from that 7–17 km range to about 50 km, temperature increasing with height.

* mesosphere: from about 50 km to the range of 80 km to 85 km, temperature decreasing with height.

* thermosphere: from 80–85 km to 640+ km, temperature increasing with height.

* exosphere: from 500-1000 km up to 10,000 km, free-moving particles that may migrate into and out of the magnetosphere or the solar wind.

Answer 3

You asked three times the same questions but I still do not understand what you want to know by this uncomplete question.
Cheers.