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16 Οκτ 2023 · The exosphere is the highest and top layer of the Earth's atmosphere. It marks the edge of space. There are very few molecules in this layer. The lightest atmospheric gases such as hydrogen and helium exist throughout the exosphere. Heavier ones like carbon dioxide and atomic oxygen are near the base.
The exosphere is the fifth and outermost layer of the atmosphere, beginning at the upper boundary of the thermosphere and lower exosphere, referred to as exobase, exopause, and the 'critical altitude'.
The exosphere is a thin, atmosphere-like volume surrounding a planet or natural satellite. Its molecules are gravitationally bound to that body. The density is so low that the molecules are essentially collisionless. [1]
It is because the atmosphere helps us to block some unwanted harmful sun's rays from reaching Earth. Whereas In the Earth's atmosphere, Exosphere is the uppermost part between Earth's atmosphere and the space between the planets of the Solar System.
The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space. The air in the exosphere is extremely thin - in many ways, it is almost the same as the airless void of outer space.
A compilation of some interesting facts about the exosphere intended to shed light on this layer of the Earth’s atmosphere, which is sometimes – though incorrectly, considered a part of the outer space.
