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
Where We Are Where We Are Where We Are is the ninth studio album by Irish boy band Westlife. It was released on 27 November 2009 in Ireland and on 30 November 2009 in the UK through S Records, RCA Records and Sony Music. "Where We Are" is the group's first album following a break from music in 2008. This album was preceded by the lead single "What About Now" (a cover of the Daughtry song) and it was released on 23 October 2009 as a digital download a day later as a CD single. The group collaborated with numerous notable producers for