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
The Who, What, or Where Game of "Jackpot" that aired between 1985 and 1988 on the USA Network. After unsuccessfully attempting to revive the series in 1988 with a failed pilot called "The New Who, What or Where Game", Ron Greenberg later reformatted the show as "The Challengers", hosted by Dick Clark. "The Challengers" incorporated elements from "The Who, What, or Where Game" alongside a mix of topical questions in categories dealing with current events. Jonathan Lethem's 2013 novel "Dissident Gardens" has as part of its plot a character who appears on this show, which is mentioned by name, as is host Art James. The music