Striking new images of the Red Planet have raised hopes life could be found on Mars after all.
Scientists say they have photographic evidence that suggests liquid water may have been on the planet as little as five years ago.
Experts last night said Mars now appears more active than previously thought and the latest study shows why it is vital to continue to search for life on our planetary neighbour.
The first images of Mars' surface were taken in the 1960s and they suggested it was a dusty, cratered world rather like our Moon.
Now a new set of photographs has suggested that liquid water may have flowed on the planet a mere five years ago.
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Is there water/life on Mars or not?