Two teams of scientists reported last week that data from NASA’s Cassini orbiter reveal unusual chemical activity on Saturn’s giant moon Titan.

It’s plausible, but far from definitive, that a primitive exotic form of life on Titan’s frigid surface could be causing the strange results.

Earth organisms would barely last a few seconds before freezing solid on Titan’s -300 degree Fahrenheit surface. But this could be tantalizing evidence for “cryo-life.” It would be an utterly alien biology existing at very low temperatures where liquid methane and ethane are used in place of water as a solvent.

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