La yanayi za a iya raba shi zuwa takamaiman adadin matakan kwance waɗanda ke da goyan bayan masu canji daban-daban, kamar su matsin lamba, zafin jiki, yawa, kayan sunadarai, yanayin lantarki da yanayin maganadisu. Tare da kowane ɗayansu yana yiwuwa a gwada dacewa da wani sashi a tsayi kuma, a cikin mafi mahimmancin yanayi, ƙirar tsari. Koyaya, tunda har yanzu akwai sauran yankuna na sararin samaniya waɗanda ake bincika kuma karatun manyan matakan ba da daɗewa ba, babu ma'anoni da aka yarda da su a duniya don matakan daban.
Una hangen nesa na roba na saiti yana ba da damar yin waɗannan bambance-bambancen, daga ƙasa zuwa waje za mu sami:
1. Gida. Har zuwa tsawo wanda aka isa bisa al'ada 80 km shine wannan farkon Layer, inda abun da ke cikin sinadarai iri daya ne, dokokin cikakkun gas sun cika a ciki, kuma a tsarinta rabon ɗumbin yawa, matsi da yanayin zafi na asali ne.
2. Yanayin sararin samaniya. Ya bambanta da yankin da ya gabata, yankunan da ke sama rasa daidaito a cikin sunadarai abun da ke ciki, an daina saduwa da dokokin kasa gaba daya na hydrostatics kuma ana gano tsarin shimfida layin ta hanyar tsarinta maimakon ta halaye na zahiri; ta haka ne, muna magana ne game da Layer na kwayoyin nitrogen (har zuwa kilomita 200 tsawo), daga oxygen atom (yana tsakanin kilomita 200 zuwa 1.000), na helio (tsakanin kilomita 1.000 zuwa 3.500), da dai sauransu. A lokaci guda, saboda rashin cakuda rikice-rikice na iskar gas, rarrabuwa yadawa yana faruwa kuma iskar gas mai yawa tana tarawa zuwa kasa, yayin da iskar gas masu sauki kan mai da hankali a manyan matakai inda zasu iya tserewa daga filin gravitational filin.
Hoton: Riconsolidario