Mesosphere - Navo

• The distance of this layer is from 50km to 85km (30 miles to 50 miles) above the Earth’s surface. Meteors, asteroids, and shooting stars can be seen and are destroyed in this layer. This layer is an upper layer of the atmosphere. 
• The ionosphere, a layer of electronically charged particles that transmits AM radio waves, is found here. This layer is the coldest with extreme temperatures that can reach -80 degress.
• Temperature decreases with height throughout the mesosphere. The coldest temperatures in Earth's atmosphere, about -90° C (-130° F), are found near the top of this layer.
• The mesosphere is difficult to study, so less is known about this layer of the atmosphere than other layers. Weather balloons and other aircraft cannot fly high enough to reach the mesosphere. Satellites orbit above the mesosphere and cannot directly measure traits of this layer. 
• Scientists use instruments on sounding rockets to sample the mesosphere directly, but such flights are brief and infrequent. Since it is difficult to take measurements of the mesosphere directly using instruments, much about the mesosphere is still mysterious.

Meteors being destroyed in the Mesosphere