Pasinei nokuumbwa zvikurukuru ne hydrogen ne helium, huwandu hwakawanda hwaSaturn hausi muchikamu chegasi, nokuti hydrogen inova mvura isiri yakakwana apo huwandu hunopfuura 0.01 g/cm3, hunosvika pa radius ine 99.9% yehuwandu hwaSaturn. Temperature, kumanikidzwa, uye density mukati meSaturn zvose zvinokwira zvishoma nezvishoma kusvika pakatikati, izvo zvinoita kuti hydrogen ive simbi mumativi akadzika. Standard mapuraneti mienzaniso inoratidza kuti mukati meSaturn yakafanana neJupiter, ine dombo duku rakakomberedzwa ne hydrogen ne helium ne trace amounts of various volatiles. Iyi core yakafanana nekuumbwa kwepasi, asi yakanyanya kuwanda. Kuongorora kweSaturn's gravitational core, mumamiriro ezvinhu epanyama emukati, kwakabvumira kuti hydrogen iiswe paSaturn's core splints. Muna 2004, masayendisiti akafungidzira kuti kupisa kweSaturn kunogona kuitika kuburikidza nekupern's core inowanikwa nehelium uye madonhwe emvura inodonha zvishoma nezvishoma mukati mezuva.
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