Saturn's moon is hiding a secret.
Years ago, NASA and the ESA's Cassini-Huygens spacecraft swung through the salt-rich plumes spewing from the interior of Saturn's moon, Enceladus. But in the middle of this, the probe detected a collection of compounds that scientists have also linked to hydrothermal vents at the bottom of Earth's oceans. Scientists had thought the amount of methane in the plumes could be the result of known geochemical, or non-biological, processes. Until now.
A team of scientists has said that no known lifeless process could be responsible for the amount of methane observed firing out of the planet's surface, which means it could come from a resident life form, according to a recent study published in the journal Nature Astronomy.
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