Irudia Eguzkia sartu
ondoren aterata dago, bertan Zodiakoko argia ikus daiteke hiruki
itxurako argi modura, Eguzki Sisteman dauden partikulak (hauts
kosmikoa) Eguzkiak argiztatzearen ondorioz sortzen da. Zodiakoko
argia sortzen duten partikulak leiar itxura duen espazio-bolumen
batean kokaturik daude, Eguzkia erdigune dutela eta Lurraren
orbitatik haratago hedatzen da.
Bestalde, Aire-distira
ere ikus daiteke irudian (laino marroi-gorrixken itxuran). Argi
hau prozesu ezberdinek sortzen dute Lurraren goi atmosferan,
egunez Eguzki fotoiek fotoionizatutako atomoen bir-konbinaketek,
lumineszentziak izpi-kosmikoek goi atmosferan talka egiteagatik
eta kimika-lumineszentziagatik oxigenoak eta nitrogenoak
hidroxido erradikal askeekin erreakzionatuz.
Wikipedia:
Airglow
In this image taken after
sunset, the zodiacal light can be seen as a light triangle. It's
produced by sunlight reflecting off dust particles in the Solar
System known as cosmic dust. The material producing the zodiacal
light is located in a lens-shaped volume of space centered on
the sun and extending well out beyond the orbit of Earth.
Airglow is a faint emission
of light by a planetary atmosphere. Is produced by various
processes in the upper atmosphere of Earth, the recombination of
atoms which were photoionized by the Sun's photons during the
day, luminescence by cosmic rays striking the upper atmosphere,
and chemiluminescence caused mainly by oxygen and nitrogen
reacting with hydroxyl free radicals at heights of a few hundred
kilometres. In the image reddish airglow emission is from OH (Hydroxyl)
molecules and oxygen atoms.