A Nasa image of depressions interpreted as ancient lake basins. Photograph: NASA/PA
From The Guardian:Nasa pictures suggest existence of 12 mile-wide lakes of melted ice on Martian equator 3bn years ago.Lakes of liquid water existed on Mars at a time when the planet was previously thought to be a frozen desert, new satellite images have shown.
A team of British-led scientists now believes 12 mile-wide lakes of melted ice were dotted around parts of the Martian equator 3bn years ago.
No one had expected to find evidence of a warm, wet climate capable of sustaining surface water on Mars during this period of the planet's history, known as the Hesperian epoch.
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