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Finding Organics on Mars Isn't Enough. ExoMars Will Look for Their "Handedness."

We’ve known for a long time that there are organic molecules on Mars. Rovers and landers keep turning them up wherever they look. But, “organic” simply means a molecule is made up of carbon and hydrogen atoms, not that it was created by life - there are plenty of non-biological processes that can create organic molecules. But there is one feature of organic molecules that can point very strongly in the direction of life or not - its chirality, and a new instrument on the Rosalind Franklin rover, planned for launch to Mars in the 2030s, just proved it can successfully look for it.

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