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Something is consuming hydrogen and organic molecules on Saturn's moon Titan, and the recipe matches astrobiologists' theories about possible methane-based life. Granted, there may be other chemical explanations -- it's just that no one knows what they are yet.
New data from the Cassini spacecraft show hydrogen is disappearing near Titan's surface. What's more, scientists have not been able to find acetylene, an organic molecule that should be pretty abundant in the moon's thick atmosphere.
All this fits very nicely with a theory from NASA astrobiologist Chris McKay, who proposed f