See that green glowing ? It ’s not the aurora borealis . Although it ’s technically present in almost all sentiment of the Earth from distance , it can only be clearly seen at sure slant and sure times . It ’s a phenomenon known as airglow , and it ’s our own atmosphere lighting up like radiate - in - the - dark key .
As we ’ve project , space representation are worth it for the art alone . In some of these pictures , in which the Earth is outlined against a backcloth of quad , you may see a green circle . This is not sluttish traveling through the atmosphere – it ’s light being generated by the ambience .
https://gizmodo.com/nasas-breathtaking-earth-as-art-photos-are-now-a-free-5965344
Ultraviolet radiation is give up by the Dominicus , and the atoms in the atmosphere absorb ultraviolet light . Often objects that engross photon of a certain frequency re - emit atoms of the same frequency , meaning we would n’t be able to see those re - emitted atoms . Sometimes , though , they engross these UV photons , utilize some of the tycoon they ’re pay , re - emit photon at a broken zip . Occasionally , that low-pitched energy photon is in the visible spectrum .
The atomic number 8 in our atmosphere is one of those exceptional types of substances . It only gives off a faint glowing , and we ca n’t see it unless it ’s against a sullen background . When conditions are right , like when someone in infinite picture the night side of the planet , we can see the particular shade of gullible it emits . The atmosphere can also glow due to different cognitive process , like chemical interaction between the mote and bombardment by cosmic shaft of light , but the green band is most prominent .
This kind of glow happens on other major planet , too . Since their atmospheres are made up of unlike molecule , the colour is unlike . Using spectroscopic analysis , scientist can use the color of this glow to sympathise the chemical make - up of foreign atm .
Top Image : NASA
2d Image : NASA
Third Image : NASA
ViaAtmospheric OpticsandAlbany.edu .
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