The red planet with the white south pole at the bottom. Image: ESA and Max Planck Institute / OSIRIS team
Enormous liquid water lake discovered under the surface of Mars - space science news

Data obtained with the radar system of the Mars Express suggest that there is liquid water under the surface of Mars. This underground water reservoir is 20 km wide and up to 1.5 km deep. It is located under Mars’ south pole under a thick ice sheet. While water temperature in the reservoir is -68 degrees Celcius, it remains liquid due to the extremely high salt content. Also, the pressure from the ice sheet may contribute to this. Due to the high salt content, high pressure, and low temperature, researchers think it is unlikely that there are any life forms in the water reservoir, but the discovery of the permanent presence of liquid water is nevertheless spectacular and exceeds astronomer’s highest expectations.

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Scientific publication: Science