Nasa's Curiosity rover has found organic matter preserved on Mars, in a discovery that could suggest it was once home to life.
The molecules represent an intriguing suggestion that Mars has been far more alive than we ever knew. While the discovery does not shed light on whether Mars was once home to alien life, and whether it could still be, the findings could be the result of ancient life there.
"The chances of being able to find signs of ancient life with future missions, if life ever was present, just went up," said Curiosity's project scientist, Ashwin Vasavada of NASA's Jet Propulsion Laboratory in Pasadena, California.
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