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 top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi; 33,000,000 ft)  where it merges into the solar wind. The exosphere is located too far above Earth for any meteorological phenomena to be possible. However,  the aurora borealis  and aurora australis  sometimes occur in the lower part of the exosphere, where they overlap into the thermosphere. The exosphere contains many of the satellites orbiting Earth.
The exosphere is the outermost layer of Earth's atmosphere (i.e. the upper limit of the atmosphere). It extends from the thermopause, at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi; 33,000,000 ft) , where it merges into the solar wind. The exosphere is too far above Earth for meteorological phenomena to be possible. However, Earth's auroras— the aurora borealis (northern lights) and aurora australis (southern lights)— sometimes occur in the lower part of the exosphere, where they overlap into the thermosphere. The exosphere contains many of the artificial satellites that orbit Earth.
R
exobase, which is located
thermopause,
A
,
D
located
D
any
A
Earth's auroras—
A
(northern lights)
A
(southern lights)—
R
satellites orbiting
artificial satellites that orbit