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Prin intermediul sondei Cassini, NASA a descoperit că Enceladus oscilează uşor, înregistrând variaţii ale vitezei orbitale, comportament ce poate fi explicat prin existenţa unui ocean global care permite alunecarea crustei îngheţate de la suprafaţa acestui satelit.
Există însă şi alte întrebări la care oamenii de ştiinţă trebuie să răspundă, printre care şi cea legată de căldura relativă a acestui ocean. Este posibil ca forţele mareice exercitate de Saturn să încălzească acest satelit mai mult decât se credea.
Mai multe informaţii despre Enceladus vor fi obţinute după data de 28 octombrie când sonda Cassini trece la doar 50 de kilometri de suprafaţa acestei luni.
Sursa: Agerpres
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