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originally posted by: swanne
a reply to: theantediluvian
If the methane is biological in origin, then it means the organism causing it roughly follows Earth's biological processes. We can hope for not-that-alien exolife.
"We suggested hydrogen consumption because it's the obvious gas for life to consume on Titan, similar to the way we consume oxygen on Earth," McKay said. "If these signs do turn out to be a sign of life, it would be doubly exciting because it would represent a second form of life independent from water-based life on Earth."