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The earth has layers on the inside and layers
on the outside, aka the atmosphere.
From the outside in:
Thermosphere - Hot outer layer, hit
by a lot of solar
radiation. Temps at
~ 980oC or 1,796oF
Ionosphere - The lower Thermosphere and
upper Mesosphere, filled with
ions that bounce radio waves
long distances across earth.
Mesosphere - This layer doesn’t absorb much
radiation, so the temp drops to
below -80oC or -112oF