Researchers investigating whether liquid water could exist on Mars have provided new insight into the limits of life on the red planet.

A team led by Dr Lorna Dougan from the University of Leeds has analysed the structure of water in a magnesium perchlorate solution -- what they refer to as "mimetic Martin water" -- to better understand how the liquid could exist on the Martian surface.

Martian soil samples gathered by the Phoenix Lander in 2009 found calcium and powerful oxidants, including magnesium perchlorate. This fuelled speculation that perchlorate brine flows might be the cause of channelling and weathering observed on the planet's surface.

Dr Dougan, from the School of Physics and Astronomy and the Astbury Centre said: "The discovery of significant amounts of different perchlorate salts in Martian soil gives new insight into the Martian 'riverbeds.'

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