Point 13 of 21 — Module 9 — Components and Layers of the AtmosphereQuestion bank: 0 questions (0 with pictures)
13 4.3 Mesosphere
From 50 km to about 80 km.
The coldest layer of the atmosphere, with temperatures down to about −93 °C (some measurements reach −100 °C), because the layer contains few gas molecules able to absorb the Sun's radiation and ozone is scarce.
Protective role: most meteors entering the atmosphere from space burn up and disintegrate in this layer (the air here is dense enough to heat them by friction/compression). We see them as "shooting stars".
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