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*diagram showing the 5 [primary layers] of the earth’s [atmosphere]* —>
-EXOSPHERE-
-THERMOSPHERE-
-MESOSPHERE-
-STRATOSPHERE-
-TROPOSPHERE-
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The layers are to scale. From the Earth’s surface to the top of the stratosphere (50km) is just under 1% of Earth’s radius.
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(ancient greek: ἔξω éxō “outside, external, beyond”, ancient greek: σφαῖρα sphaĩra “sphere”)
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*the exo-sphere is a ‘thin atmosphere-like volume’ surrounding a ‘planet’ or ‘natural satellite’ where ‘molecules’ are ‘gravitationally bound’ to that ‘body’, but where the ‘density’ is too ‘low’ for them to behave as a ‘gas’ by colliding with each other*
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(in the case of bodies with substantial atmospheres, such as earth’s atmosphere, the exosphere is the ‘uppermost layer’, where the atmosphere thins out and merges with ‘interplanetary space’)
(it is located directly above the ‘thermosphere’)
(very little is known about it due to lack of research)
(‘mercury’ and several large moons, such as the ‘moon’ and the ‘galilean satellites’ of ‘jupiter’, have ‘exospheres’ without a denser atmosphere underneath, referred to as a ‘surface boundary exosphere’)
(here, molecules are ejected on ‘elliptic trajectories’ until they collide with the surface)
(smaller bodies such as ‘asteroids’, in which the molecules emitted from the surface escape to space, are not considered to have ‘exospheres’)
“EXOBASE” (aka “THERMOPAUSE”)
(lower boundary)
UPPER BOUNDARY OF ‘EARTH’:
(in principle, the ‘exosphere’ covers distances where particles are still gravitationally bound to ‘earth’, i.e. particles still have ‘ballistic orbits’ that will take them back towards ‘earth’)
(the upper boundary of the ‘exosphere’ can be defined as the distance at which the influence of ‘solar radiation pressure’ on ‘atomic hydrogen’ exceeds that of earth’s ‘gravitational pull’)
(this happens at half the distance to the ‘moon’ (the average distance between ‘earth’ and the ‘moon’ is 384,400 kilometres (238,900 mi)))
(the ‘exosphere’, observable from space as the ‘geo-corona’, is seen to extend to at least 10,000 kilometres (6,200 mi) from earth’s surface)
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(the ‘exo-sphere’ is a ‘transitional zone’ between “earth’s atmosphere” + “(outer) space”)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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👈👈👈☜*-[SUB-DIVISIONS] OF EARTH’S ATMOSPHERE-* ☞ 👉👉👉
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥