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Mars site may hold buried life
Researchers have identified rocks that they say could contain the fossilised remains of life on early Mars.
The team made their discovery in the ancient rocks of Nili Fossae.
Their work has revealed that this trench on Mars is a "dead ringer" for a region in Australia where some of the earliest evidence of life on Earth has been buried and preserved in mineral form.
They report the findings in the journal Earth and Planetary Science Letters.
The team, led by a scientist from the Search for Extraterrestrial Intelligence Institute (Seti) in California, believes that the same "hydrothermal" processes that preserved these markers of life on Earth could have taken place on Mars at Nili Fossae.