An article published in the journal “Astrobiology” reports a study on the possible origin of organic compounds known as thiophenes discovered on Mars by NASA’s Mars Rover Curiosity. Jacob Heinz of the Technische Universität in Berlin and Dirk Schulze-Makuch of Washington State University described some possible processes leading to the formation of thiophenes. These possible processes can be non-biological or biological, and the problem is to find evidence that points to one of them. Thiophenes also exist on Earth and there’s a tendency to think that they’re formed as a result of biological processes, but on Mars this would mean that life forms exist.
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