how thick is the mesosphere
The mesosphere is about 40 kilometers thick, a little thicker than the stratosphere. Thermosphere. The thermosphere is the thin-aired fourth layer of the atmosphere. It is considered by some to be the end of Earthâs atmosphere and the start of outer space.eyond the stratosphere is the mesosphere, the fog layer. The air is very thin in the mesosphere but thick enough to burn up meteoroids. In fact, most of the shooting stars that you see are actually meteoroids the size of grains of sand burning up in the mesosphere.