They are yet more proof of the red planet's wet past. The European Space Agency today released an astonishing series of pictures showing the remnants of a huge river than once ran across Mars. Taken by the ESA’s Mars Express, they show Reull Vallis, the 'river-like structure' is believed to have formed when running water flowed in the distant martian past. This computer-generated image of a river-like feature in the Reull Vallis region of Mars was created using data from the Mars Express spacecraft The images were taken from data collected in the Reull Vallis region of Mars, shown here
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Huge 'river-like structure' caputured by Mars Express spacecraft and is almost 1,000 feet (300m) deep
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Experts say the images show a 'striking resemblance' to areas of Earth affected by glaciation
'These analogies are giving planetary geologists tantalising glimpses of a past on the @placeholder not too dissimilar to events on our own world today.'