Upper atmosphere is the portion of the atmosphere of Earth above the troposphere and corresponding regions of the atmospheres of other planets. It includes various layers, such as the following:

• The mesosphere, which on Earth lies between the altitudes of about , sometimes considered part of the "middle atmosphere" rather than the upper atmosphere

• The thermosphere, which on Earth lies between the altitudes of about

• The exosphere, which on Earth lies between the altitudes of about

• The ionosphere, an ionized portion of the upper atmosphere which includes the upper mesosphere, thermosphere, and lower exosphere and on Earth lies between the altitudes of

See also

• Geospace

• Magnetosphere

• Near space

• Upper-atmospheric lightning

References