Possible signs of ancient life on Mars are rich in complex carbon

NASA’s Perseverance Mars rover alongside a rock with markings that resemble features made by microbesNASA/JPL-Caltech/MSSSNASA’s Perseverance rover has found complex carbon compounds in a Martian crater that had previously shown tantalising possible signs of ancient life. On Earth, these compounds are typically associated with dead organisms, but scientists say it is too early to draw the same con