Last year, NASA’s Curiosity rover made a fascinating discovery after boring into a suspected ancient lake bed on Mars: long-chain organic molecules, called alkanes, that could serve as a potential chemical relic of ancient life on the Red Planet.
The molecules, researchers suggested at the time, could have derived from fatty acids, which are common building blocks of cell membranes on Earth, once again strengthening the case that Mars could’ve been teeming with life billions of years ago.
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