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July 10, 2021
TUCSON, Ariz. An unknown methane-producing process is likely at work in the hidden ocean beneath the icy shell of Saturn s moon Enceladus, suggests a new study published in Nature Astronomy by scientists at the University of Arizona and Paris Sciences & Lettres University.
Giant water plumes erupting from Enceladus have long fascinated scientists and the public alike, inspiring research and speculation about the vast ocean that is believed to be sandwiched between the moon s rocky core and its icy shell. Flying through the plumes and sampling their chemical makeup, the Cassini spacecraft detected a relatively high concentration of certain molecules associated with hydrothermal vents on the bottom of Earth s oceans, specifically dihydrogen, methane and carbon dioxide. The amount of methane found in the plumes was particularly unexpected.
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Even though NASA s Cassini mission ended around four years ago, data collected by this probe about Saturn and its moons still continue to perplex researchers. And now, a recent study carried out using the data obtained by the Cassini mission has apparently found possible signs of alien life on Saturn s moon Enceladus.
Is methane a sign of alien life?
In a new study published in Nature Astronomy, researchers from the University of Arizona and Paris Science and Letters University revealed that they have detected methane in the plumes of Saturn s icy moon Enceladus. It is still unclear how this methane is produced, but researchers believe that it could be coming out from activity at hydrothermal vents present on Enceladus s interior seafloor.
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