Atmosphere of Earth (see the temperature section, below). Because the general pattern of the temperature/altitude profile is constant and measurable by means of instrumented balloon soundings, the temperature behavior provides a useful metric to distinguish atmospheric layers. In this way, Earth's atmosphere can be divided (called atmospheric stratification) into five main layers. Excluding the exosphere, the atmosphere has four primary layers, which are the troposphere, stratosphere, mesosphere, and thermosphere. From highest to lowest, the five main layers are: The exosphere is the outermost layer of Earth's atmosphere (i.e. the upper limit of the atmosphere). It extends from the exobase, which is located at
Outermost Radio of expression alive and in the process, give us an unflinching look into their personal lives. "Outermost Radio" features a live performance from The Blind Boys of Alabama. "Outermost Radio" was selected by the 2015 Provincetown International Film Festival where Chebot won the John Schlesinger Award. The film was also selected in 2015 by the Kansas International Film Festival, the St. Louis International Film Festival, and the Hamptons Take 2 Documentary Film Festival. In 2016, "Outermost Radio" continued its festival tour at Idyllwild International Festival of Cinema in Idyllwild, CA, where the film won Best Director honors, and in February